CN105771617A - Flue gas desulfurization and denitrification method - Google Patents
Flue gas desulfurization and denitrification method Download PDFInfo
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- CN105771617A CN105771617A CN201610164030.5A CN201610164030A CN105771617A CN 105771617 A CN105771617 A CN 105771617A CN 201610164030 A CN201610164030 A CN 201610164030A CN 105771617 A CN105771617 A CN 105771617A
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- flue gas
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- 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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/041—Oxides or hydroxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/043—Carbonates or bicarbonates, e.g. limestone, dolomite, aragonite
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/14—Diatomaceous earth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/402—Alkaline earth metal or magnesium compounds of magnesium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/42—Materials comprising a mixture of inorganic materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4806—Sorbents characterised by the starting material used for their preparation the starting material being of inorganic character
Abstract
The invention relates to an efficient desulfurization and denitrification material, comprising at least one of calcium hydroxide, calcium carbonate, magnesium hydroxide, magnesium carbonate and sodium carbonate or sodium bicarbonate. A binder that is 0.1-10% by weight is added, diatomite or kaolin that is 5-10% of total weight of materials is added, and cerium dioxide that is 0.2-1% of the total weight of the materials is added. The desulfurization principle of the efficient desulfurization and denitrification material provided herein refers to oxidizing sulfur dioxide into sulfur trioxide and carrying out desulfurization reaction to generate calcium sulfate or other sulfate compounds, these compounds require no secondary treatment, and no environment damage is caused; therefore, this method enables the emission of subsequent pollutants from flue gas desulfurization to be substantially avoided and is environment-friendly.
Description
Technical field
The present invention relates to desulfuration field, the efficient desulfurization denitration method of a kind of flue gas and the material of use.
Background technology
The conventional limestone-gypsum method of wet desulphurization such as steam power plant's desulfurization, NaOH-lime white (or hydrogen-oxygen
Change magnesium) etc. method, device is more complicated, and operation energy consumption is the highest, produces waste water and needs to process, and causes other
Secondary pollution, cumbersome, directly copy mechanically coking furnace flue gas desulfurization process be likely difficult to up to standard.Also have past
The way (dry desulfurization on ordinary meaning) of Injection for CFB Boilers calcium carbonate sulphur removal, but at this method
Reason effect is poor.
Lime white in traditional wet method (use the Dual alkali of NaOH+lime, and magnesium hydroxide, former
Manage the most identical) with flue gas in SO2Reaction generation calcium sulfite (Dual alkali first passes through NaOH reaction, after
Person and lime white are reacted to calcium sulfite and restore NaOH.Sodium hydroxide solution Reusability.Clean
Reaction reacts generation calcium sulfite for calcium hydroxide and sulfur dioxide)；Traditional dry desulfurization is fine coal circulation
Spraying into calcium carbonate with coal dust in fluidized-bed combustion boiler and enter boiler furnace, Decomposition of Calcium Carbonate generates calcium oxide, the latter
With a part of oxysulfide generates calcium sulfate；And Roche dry desulfurization simply uses lime or magnesium hydroxide and oxygen
Change catalyst, wherein catalyst oxidation SO2Become SO3, the latter becomes calcium sulfate or and hydrogen with lime reaction
Magnesia reaction generates magnesium sulfate/magnesium bisulfate etc..
Conventional dry desulfurization: CaCO3→CaO+CO2SOx+CaO→CaSO4
Conventional wet desulfurization: SO2+Ca(OH)2→CaSO3+H2O。
According to retrieval, finding the patent document the most relevant to the application, specific disclosure is as follows:
1, the open a kind of compound desulfurization denitrification agent of patent document CN103816766A, belongs to industrial gas purifying
Technical field, described compound desulfurization denitrification agent makes in accordance with the following steps: by urea 40-50 weight portion, carbonic acid
Sodium 60-80 weight portion, EDTA close iron 0.2-0.8 weight portion, absorbefacient 0.2-0.8 part, stearic bicine diester base two
Ethene triamine 0.5-0.8 weight portion mix, wherein, EDTA close iron, absorbefacient, surfactant weight it
With more than 1.2 weight portions, add deionized water 700-900 weight portion, stir, add appropriate hydroxide
Sodium, regulation pH is 10-12.Present invention higher nitrogen oxides and removing of sulfur dioxide under normal temperature and pressure,
To the absorptivity of nitrogen dioxide more than 95%, to the absorptivity of sulfur dioxide more than 90%, its infiltration rate
Hurry up, efficiency high.
2, patent document CN1919447 relates to environmental friendly material technical field, for a kind of flue gas desulfurization and denitrification material
The preparation method of material, by containing divalent metal copper, magnesium, zinc and polyvalent metal ion aluminium, iron, the mixed liquor of cobalt
Use with NaOH and sodium carbonate liquor and flow method co-precipitation and form hydrotalcite-like materials, then, by beating
Slurry be mixed into kaolin, silica gel, boehmite, aluminium glue, add sesbania powder and or methylcellulose, make
Shaping carrier, calcining prepares flue gas desulfurization and denitration material；The process that flue gas desulfurization and denitration material repeated regeneration uses
Method is: the sorbing material after absorption saturated to nitrogen oxides carries out absorbing liquid denitration regeneration, prepares dust technology；Right
Sorbing material after the saturated absorption of sulfur dioxide carries out hydrogen reducing desulfurization regeneration, prepares sulphur.
3, patent document CN102824844A discloses a kind of desulfurization denitrification agent, preparation method and its usage,
Described desulfurization denitrification agent is nanometer materials, including following components: MgO, SiO2、CaO、Fe2O3、Al2O3、
CuO and MnO2, optionally include strong oxidizer KMnO4.Use the nanoscale desulfurization denitrification agent of the present invention,
Can in flue gas desulfurization course simultaneous removing NOX, denitrification efficiency is high.
The desulfurizing agent composition of above-mentioned patent is more complicated, uses requirement higher, is not suitable for large-scale promotion and uses.
Summary of the invention
In place of it is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of efficient desulphurization denitration of flue gas
Method and the material of use, it is high that this material has desulfuration efficiency, and investment and running cost all ratios are relatively low, do not produce
Secondary pollution, is easily processed up to standard.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of efficient desulphurization denitration material, composition and degree are as follows: calcium hydroxide, calcium carbonate, hydrogen
At least one in magnesia, magnesium carbonate, sodium carbonate or sodium acid carbonate, adds binding agent 0.1-10wt%, adds
Enter diatomite or the kaolin of material gross weight 5-10%, add the ceria of material gross weight 0.2-1%.
And, described binding agent is Alumina gel.
The preparation method of a kind of efficient desulphurization denitration material, step is as follows
(1) above-mentioned material is mixed, add water, be uniformly mixed；
(2) the mixture after above-mentioned adding water is added kneader to mediate, carry out dispersed and mediate；
(3) mixing material carries out drying and moulding after mediating.
And, the shape of described drying and moulding can be bar shaped, irregular figure particle, irregular contour particle,
Through hole it is shaped with in particle.
A kind of efficient desulfurization denitration method of flue gas, by flue gas by equipped with in the device of above-mentioned material, allows flue gas
After material, the sulphur in flue gas and nitre are removed.
Advantages of the present invention and good effect be:
1, the efficient desulphurization denitration material that the present invention provides has desulfuration efficiency height, and investment and running cost are equal
Ratio is relatively low, does not produce secondary pollution, is easily processed up to standard.
2, the efficient desulphurization denitration material desulfurization principle that the present invention provides is that oxidizing sulfur dioxide becomes three oxidations
Sulphur carries out desulphurization reaction the most again, generates calcium sulfate or the compound of other sulfate radicals, and this compound no longer needs
Want after-treatment, environmental sound, so this method can fundamentally break off relations the subsequent contamination thing of flue gas desulfurization
Discharge, environmentally friendly.
3, the efficient desulphurization denitration material that the present invention provides needs only to a smoke absorption tower in use
Equipment, by flue gas according to Flue duct design by removing means, it is not necessary to flue gas is carried out forward and backward process,
After flue gas carries out adsorbing desulfurization, directly discharging, it is the simplest, convenient to operate；Convenient, place changed by material simultaneously
Reason ability is big, it is not necessary to the most more conversion materials, time saving and energy saving.
4, the efficient desulphurization denitration material that the present invention provides can be fabricated to granular product, transports and stores up
Deposit and be quite convenient to, provide the user with bigger convenience, simultaneously technique and simple, only one of which smoke absorption
System, does not the most produce waste water without water, movement-less part therefore not easy break-down, and desulfurized effect stably and is easily adjusted
Joint.
5, the efficient desulphurization denitration material that the present invention provides all has good removing to imitate in temperature range widely
Really, even if during temperature 0 degree, its removal efficiency is also more than 80%.With temperature rising, desulfuration efficiency has rising
Trend.Desulfuration efficiency easily reaches 90% and more than 90% at each temperature.
6, the efficient desulphurization denitration material that the present invention provides contains diatomite or kaolin, by increasing capacitance it is possible to increase material
The specific surface area of material, increases the desulfuration efficiency of flue gas.It is additionally added the ceria of material gross weight 0.2-1%, energy
Enough improve desulfuration efficiency further.
Accompanying drawing explanation
Fig. 1 is material silica sulphur of the present invention removing experiment, and feed rate is 11000h-1, gas componant is:
750mg/m3SO2, 5%O2+N2；
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings and by specific embodiment, and following example are simply retouched
The property stated, be not determinate, it is impossible to limit protection scope of the present invention with this.
The desulfurization principle of material of the present invention is as follows:
Dry desulfurization: SO2+[O]→SO3SO3+Ca(OH)2→CaSO4+H2O
A kind of efficient desulphurization denitration material, composition and degree are as follows:
Main material: calcium hydroxide, calcium carbonate, magnesium hydroxide, magnesium carbonate, sodium carbonate, sodium acid carbonate
Binding agent: 0-10wt% Alumina gel (alundum (Al2O3) colloidal sol) can also select other kinds of binding agent
Diatomite or the kaolin of material gross weight 5-10% can also be added, add material gross weight
The ceria of 0.2-1%, also can add silica 1-5%, by increasing capacitance it is possible to increase the cohesive force between material.
The preparation method of above-mentioned material is as follows:
(1) above-mentioned material is mixed, add the water of the 50-100% of powder sort, be uniformly mixed；
(2) the mixture after above-mentioned adding water is added kneader 30-60min, carry out dispersed and mediate；
(3) mixing material adds banded extruder after mediating, and carries out extrusion；
(4) drying and moulding after extrusion, the bar of diameter 0.5-1.5cm or particle.
(5) in said method (3) and (4) or use simulation moving bed or the gas-solid reaction of fixed bed, make graininess
Product, granularity is probably at 0.5-1.5cm3。
The disposal ability of above-mentioned material is 50-100mg/m3, flue gas throughput is 1000-3000m3/h。
Embodiment 1
A kind of efficient desulphurization denitration material, composition and degree are as follows:
Main material: 89wt% magnesium hydroxide or magnesium carbonate
Binding agent: 6wt% Alumina gel
Diatomite or kaolin 5%
The preparation method of above-mentioned material is as follows:
(1) above-mentioned material is mixed, the water of the 80% of addition powder sort, be uniformly mixed；
(2) the mixture after above-mentioned adding water is added kneader 60min, carry out dispersed and mediate；
(3) mixing material adds banded extruder after mediating, and carries out extrusion；
(4) drying and moulding after extrusion, the bar of diameter 0.5-1.5cm or particle.
The disposal ability of above-mentioned material is 65mg/m3, flue gas throughput is 2900m3/h。
Embodiment 3
A kind of efficient desulphurization denitration material, composition and degree are as follows:
Main material: 91wt% sodium acid carbonate
Binding agent: 8wt% Alumina gel
Ceria: 1%
The preparation method of above-mentioned material is as follows:
(1) above-mentioned material is mixed, the water of the 80% of addition powder sort, be uniformly mixed；
(2) the mixture after above-mentioned adding water is added kneader 60min, carry out dispersed and mediate；
(3) mixing material adds banded extruder after mediating, and carries out extrusion；
(4) drying and moulding after extrusion, the bar of diameter 0.5-1.5cm or particle.
Embodiment 4
A kind of efficient desulphurization denitration material, composition and degree are as follows:
Main material: 94.5% calcium hydroxide (or calcium carbonate)
Diatomite or kaolin: 5%
Ceria: 0.5%
The preparation method of above-mentioned material is as follows:
(1) above-mentioned material is mixed, the water of the 80% of addition powder sort, be uniformly mixed；
(2) the mixture after above-mentioned adding water is added kneader 60min, carry out dispersed and mediate；
(3) mixing material adds banded extruder after mediating, and carries out extrusion；
(4) drying and moulding after extrusion, the bar of diameter 0.5-1.5cm or particle.
The disposal ability of above-mentioned material is 80mg/m3, flue gas throughput is 3000m3/h。
Embodiment 5
A kind of efficient desulphurization denitration material, composition and weight percent content are as follows:
Main material: 93.5wt% calcium hydroxide (or calcium carbonate)
Diatomite or kaolin 5%
Ceria: 0.5%
Silica: 1%
The preparation method of above-mentioned material is as follows:
(1) above-mentioned material is mixed, the water of the 80% of addition powder sort, be uniformly mixed；
(2) the mixture after above-mentioned adding water is added kneader 60min, carry out dispersed and mediate；
(3) mixing material adds banded extruder after mediating, and carries out extrusion；
(4) drying and moulding after extrusion, the bar of diameter 0.5-1.5cm or particle.
The disposal ability of above-mentioned material is 85mg/m3, flue gas throughput is 3000m3/h。
The present invention also uses same desulfurization condition to be contrasted this method and existing method, two kinds of contrasts
Result is as follows:
Table 1 distinct methods technical disadvantages contrasts
Table 2 is invested operating cost and is compared-technical costs advantage strong (10 ten thousand steres/hour air quantity typical boiler device)
Table 3 uses the material of embodiment 3 and 4 to carry out the testing result of desulphurization denitration
Table 4 uses the material of embodiment 3 and 2 to carry out the testing result of desulphurization denitration
Application Example
1, Tianjin Kang Ting bio-pharmaceuticals 2t/h natural gas boiler denitration, does not use ammonia or urea.NOx emission
From 120mg/m3More than arrive less than 30mg/m3, temperature range of operation can be from room temperature to 300C.Run
Cost is close to zero.
2, Langfang credit nation heating power 35t/h coal-burning boiler desulfurization and denitrification integral, flue-gas temperature 50-80 DEG C, SOx
And NOx concentration is from 400mg/m3 in pairs, more than it is reduced to 10-30 and 70-140mg/m3.
Claims (5)
1. an efficient desulphurization denitration material, it is characterised in that: composition and degree are as follows: hydrogen-oxygen
Change at least one in calcium, calcium carbonate, magnesium hydroxide, magnesium carbonate, sodium carbonate or sodium acid carbonate, add bonding
Agent 0.1-10wt%, adds diatomite or the kaolin of material gross weight 5-10%, adds material gross weight
The ceria of 0.2-1%.
Efficient desulphurization denitration material the most according to claim 1, it is characterised in that: described binding agent
For Alumina gel.
3. the preparation method of the efficient desulphurization denitration material described in a claim 1, it is characterised in that:
Step is as follows
(1) above-mentioned material is mixed, add water, be uniformly mixed；
(2) the mixture after above-mentioned adding water is added kneader to mediate, carry out dispersed and mediate；
(3) mixing material carries out drying and moulding after mediating.
The preparation method of efficient desulphurization denitration material the most according to claim 3, it is characterised in that:
The shape of described drying and moulding can be bar shaped, irregular figure particle, irregular contour particle, makes in particle
There is through hole.
5. the efficient desulfurization denitration method of flue gas, it is characterised in that: by flue gas by equipped with claim
In the device of the material that one of 1-2 is described, after allowing flue gas pass through material, the sulphur in flue gas and nitre are removed.
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| CN201610164030.5A CN105771617A (en) | 2016-03-22 | 2016-03-22 | Flue gas desulfurization and denitrification method |
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| CN201610164030.5A CN105771617A (en) | 2016-03-22 | 2016-03-22 | Flue gas desulfurization and denitrification method |
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Cited By (18)
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| CN106732387A (en) * | 2016-12-02 | 2017-05-31 | 郑州源冉生物技术有限公司 | A kind of modified kaolin and its preparation method and application |
| CN106732389A (en) * | 2016-12-02 | 2017-05-31 | 郑州源冉生物技术有限公司 | A kind of modified Nano concavo-convex rod soil and its preparation method and application |
| CN107433125A (en) * | 2017-09-13 | 2017-12-05 | 兖矿集团有限公司 | A kind of civil cooking stove flue gas desulfurization and denitrification agent and application thereof |
| CN108179022A (en) * | 2017-12-29 | 2018-06-19 | 浙江美润科技有限公司 | A kind of admiralty fuel oil compounding desulfurization filtering agent and its preparation method and application |
| CN108722168A (en) * | 2018-06-15 | 2018-11-02 | 西南化工研究设计院有限公司 | A kind of renewable dry flue gas desulphurization agent and its preparation method and application |
| CN109012075A (en) * | 2018-08-24 | 2018-12-18 | 中惠科银河北科技发展有限公司 | A kind of flue gas dry desulfurizing desulfurizing agent and preparation method thereof |
| WO2019062453A1 (en) * | 2017-09-30 | 2019-04-04 | 中晶环境科技股份有限公司 | Ozonation-based method for manufacturing cementitious material |
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| CN111346495A (en) * | 2020-03-31 | 2020-06-30 | 内蒙古包钢和发稀土有限公司 | Preparation method of metakaolin-based flue gas denitration agent |
| CN112295395A (en) * | 2020-10-28 | 2021-02-02 | 山东山大华特环保工程有限公司 | Flue gas desulfurizing agent and preparation method and application thereof |
| CN112495157A (en) * | 2020-09-30 | 2021-03-16 | 山东大学 | Device and process for cooperatively removing sulfur trioxide and hydrogen chloride |
| CN112516780A (en) * | 2020-10-27 | 2021-03-19 | 蒲城驭腾新材料科技有限公司 | Calcium-based desulfurizer and preparation method thereof |
| CN112755747A (en) * | 2020-12-15 | 2021-05-07 | 辽宁荣邦科技有限公司 | Instant magnesium hydroxide desulfurizer |
| CN113731159A (en) * | 2021-09-13 | 2021-12-03 | 江苏新中金环保科技股份有限公司 | Preparation method of calcium-based particle synchronous desulfurization and denitrification agent |
| CN114405262A (en) * | 2021-11-23 | 2022-04-29 | 天津水泥工业设计研究院有限公司 | Additive for improving performance of calcium-based desulfurizer and application thereof |
| CN114452811A (en) * | 2021-12-27 | 2022-05-10 | 深圳华明环保科技有限公司 | Desulfurization and denitrification agent and preparation method thereof |
| CN114471143A (en) * | 2021-12-30 | 2022-05-13 | 山东中航天业科技有限公司 | Defect alumina modified wide-temperature desulfurizer and preparation method and application thereof |
| US11911740B2 (en) * | 2016-10-14 | 2024-02-27 | Liwei Huang | Noxious gas purificant and its preparation and purification method thereof |
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