CN103386242A - Flue gas desulphurization synergist - Google Patents

Flue gas desulphurization synergist Download PDF

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Publication number
CN103386242A
CN103386242A CN201210137703XA CN201210137703A CN103386242A CN 103386242 A CN103386242 A CN 103386242A CN 201210137703X A CN201210137703X A CN 201210137703XA CN 201210137703 A CN201210137703 A CN 201210137703A CN 103386242 A CN103386242 A CN 103386242A
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flue gas
component
weight
synergistic agent
desulphurization
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不公告发明人
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Hunan Shengtong Technology Group Co Ltd
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Hunan Shengtong Technology Group Co Ltd
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    • 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

Abstract

The invention discloses a flue gas desulphurization synergist. The desulphurization synergist is characterized by comprising the following components, by weight: 30-60% of adipic acid, 25-50% of carboxymethylcellulose sodium, 2-20% of carbamide and 3-20% of a catalysis oxidizing agent. The flue gas desulphurization synergist provided by the invention has simple formula, high desulphurization efficiency and can reduce NOx content of the flue gas.

Description

A kind of flue gas desulfurization synergist
Technical field
The present invention relates to a kind of wet desulfurizing process, particularly a kind of wet process of FGD synergist.
Background technology
In the conventional wet sulfur removal technology, mainly adopt the limestone-gypsum doctor treatment, its operation principle is to use lime stone as absorbent, absorbs the SO in flue gas 2, generating calcium sulfite, calcium sulfite is oxidised with air to calcium sulfate, i.e. gypsum in oxidizing tower.In traditional limestone-gypsum sulfur method, low as the lime stone cost of absorbent, and desulfuration byproduct can fully utilize, so this sulfur method application is wider.
A large amount of exploitations and use along with coal resources, coal quality reduces gradually, makes the amount of sulfur contenting in smoke of generating plant pulverized coal boiler raise gradually, far surpasses the design load of desulphurization system amount of sulfur contenting in smoke, make desulfurization facility overload operation, cause system can not be continuously, stable operation.In prior art, under the prerequisite of not transforming original desulphurization plant, the desulfuration efficiency that application desulfurization synergistic agent improves equipment is effective method comparatively.
The synergist that can be used at present Limestone-gypsum Wet Flue Gas Desulfurization Process mainly contains inorganic synergist, organic synergistic agent and compound synergist, the advantage of inorganic desulfurization synergistic agent is that reaction speed is fast, can improve rapidly desulfuration efficiency, shortcoming is that the duration is short, is the expendable synergist; The advantage of organic desulfurization synergistic agent is that acting duration is long, does not directly consume synergist, and consumption is few, and shortcoming is that onset time is slower, is generally 2-5h; Although compound synergist has overcome the shortcoming of inorganic synergist and organic synergistic agent, formula is complicated, and expensive, consumption is large; And existing desulfurization synergistic agent prescription is mainly to absorbing the SO in flue gas 2Play a driving role, and the NO in flue gas xDischarge capacity does not improve.
Summary of the invention
The object of the invention is to overcome above shortcoming, provide a kind of desulfuration efficiency high, can reduce the NO in flue gas xContent, and the simple wet process of FGD synergist of filling a prescription.
Technical scheme of the present invention is:
A kind of flue gas desulfurization synergist, the quality percentage composition of the component of described desulfurization synergistic agent and each component is: adipic acid: 30-60%; Sodium carboxymethylcellulose: 25-50%; Carbonyl diamide: 2-20%; Catalytic oxidant: 3-20%.
Further, described catalytic oxidant is at least a in ferric sulfate, copper sulphate, manganese sulfate.
Further, the quality percentage composition of the component of described desulfurization synergistic agent and each component is: adipic acid: 35-55%; Sodium carboxymethylcellulose: 30-45%; Carbonyl diamide: 4-18%; Ferric sulfate: 2-8%; Copper sulphate: 1-5%; Manganese sulfate: 1-5%.
Further, the quality percentage composition of the component of described desulfurization synergistic agent and each component is: adipic acid: 40-50%; Sodium carboxymethylcellulose: 30-40%; Carbonyl diamide: 8-15%; Ferric sulfate: 3-5%; Copper sulphate: 1-3%; Manganese sulfate: 2-4%.
Desulfurization synergistic agent provided by the invention has following advantage:
1, desulfuration efficiency is high, can reduce the NO in flue gas simultaneously xContent.Flue gas desulfurization synergist provided by the invention, belong to the compound desulfurization synergistic agent of organic and inorganic compound, has the dissolving of the lime stone of promotion, SO 2The effect of solution absorption, raising desulfuration efficiency.Reaction equation is as follows:
Organic carboxyl acid ionization generates H +
R(COOH) n→R(COO -) (n-1)+H +→R(COO -) (n-2)+2H +→…
SO in flue gas 2Dissolve, hydration ionization generates H +
SO 2+H 2O→H 2SO 3
H 2SO 3→2H ++HSO 3 -
H +Again be combined with carboxylic acid ion, generate organic carboxyl acid
R(COO -) n+nH +→R(COO-) (n-1)(COOH)+(n-1)H +→…R(COOH)n
The dissolving of calcium carbonate
With NO XReaction generates N 2
NO X+CO(NH 2) 2→CO 2+N 2+H 2O
In gas phase surface and liquid film, the SO of dissolving 2React from solving H with water +, liquid film and liquid phase main body border, organic carboxyl acid radical ion and H +Reaction generates organic carboxyl acid, makes H +Be passed to the liquid phase main body, H in liquid film +Concentration reduces, and has promoted SO 2Dissolving, alleviate simultaneously pH value decrease speed; In solid phase surface and liquid film, the CO of dissolving 3 -With the H from separating +Reaction generates HCO 3-, in the liquid phase main body, H +With HCO 3 -Reaction generates CO 2And H 2O, liquid phase main body HCO 3 -The reduction of concentration, thus the dissolving of calcium carbonate promoted, thus guarantee stable, the efficient operation of desulphurization system, improve desulfuration efficiency; Carbonyl diamide energy and the NO of while synergist XReaction generates N 2Thereby, reduce NO XContent.
In compound desulfurization synergistic agent, adipic acid is organic dibasic acid, has stronger stability, and ionization produces H in water +, H +Be combined with carboxylic acid ion and generate organic carboxyl acid, make organic carboxyl acid composition in synergist as catalyst, improve desulfuration efficiency.Sodium carboxymethylcellulose in synergist belongs to organic acid polymer salt material,, as the pH value buffer of desulfurizing tower slurries, makes the pH value of desulfurizing tower slurries be stabilized in the optimum response scope in design sulphur content scope situation, promotes SO 2Absorption and the dissolving of calcium carbonate, thereby improve desulfuration efficiency, sodium carboxymethylcellulose can effectively promote the crystallization of calcium sulfate and the growth of calcium sulphate crystal simultaneously, thereby promotes that dewatering system is normal, stable operation.
Carbonyl diamide in synergist, be a kind of alkaline matter, can significantly improve the pH value of desulfurization slurry, and the assurance system is moved under optimum condition; NO in carbonyl diamide and flue gas xReaction, generate N 2, reduce NO in flue gas xDischarge capacity, improve the clean-up effect of flue gas.
Ferric sulfate, manganese sulfate, copper sulphate are as catalytic oxidant, the calcium sulfite that catalytic oxidation generates is oxidized to rapidly calcium sulfate, improve the utilization ratio of oxidation air, even in desulphurization system, surpass under design load ruuning situation, oxidation fan does not need to carry out capacity-increasing transformation.
Use flue gas desulfurization synergist provided by the invention, improve the desulfuration efficiency of desulphurization system under the prerequisite of not carrying out the desulphurization system capacity-increasing transformation, at absorption tower entrance SO 2When concentration exceeds design load 50%, the SO of absorption tower outlet 2Concentration can realize qualified discharge, and desulfuration efficiency reaches more than 93%.Simultaneously, flue gas desulfurization synergist provided by the invention, can reduce the NO in flue gas xDischarge capacity, further improve the clean-up effect of flue gas, NO xDischarge capacity can reduce 20-50%.
2, the synergist use amount is few, and cost is low.The desulfurization synergistic agent selects common several organic matters and inorganic matter to be used in combination, and formula is simple, and after tested, the first use amount of desulfurization synergistic agent is the 0.4-0.6 ‰ of absorption tower slurry weight, and later addition is according to SO 2The waste of concentration and synergist is calculated and is supplemented, and consumption is few, and desulfurization synergistic agent cost is low; And the utilization rate of lime stone is high, in use can greatly reduce the use amount of lime stone, and the use cost of desulfurizing agent is low.
The specific embodiment
Below in conjunction with embodiment, technical solution of the present invention is done further detailed description, but embodiments of the present invention are not limited to this.
Wet process of FGD synergist provided by the invention is applied to inlet flue gas SO 2Design concentration is 1584mg/Nm 3Desulphurization system in, specific embodiment is as follows:
Embodiment 1
The component of desulfurization synergistic agent and the percentage by weight of each component are:
(gross weight is 100Kg)
Component Adipic acid Sodium carboxymethylcellulose Carbonyl diamide Ferric sulfate Copper sulphate Manganese sulfate
Weight (kg) 30 50 17 1 1 1
Percentage by weight (%) 30 50 17 1 1 1
The using method of desulfurization synergistic agent is as follows:
A, with above-mentioned raw materials composite rear one-tenth finished product in proportion;
B, above-mentioned desulfurization synergistic agent is joined in absorption tower, initial addition is 0.6 ‰ of lime stone slurry weight;
C, desulphurization system after operation a period of time, are supplemented according to synergist loss situation.
Above-mentioned desulfurization synergistic agent is applied to inlet flue gas SO 2The concentration design load be 1584mg/Nm 3Desulphurization system in, the inlet flue gas SO of desulphurization system 2The concentration actual value be 2500mg/Nm 3The time, SO in the outlet flue gas 2Concentration be 120mg/Nm 3, liquid-gas ratio is 10.2, and calcium sulfur ratio is 1.03, and desulfuration efficiency is 95.2%, NO xDischarge capacity reduce by 46%.
Embodiment 2
The component of desulfurization synergistic agent and the percentage by weight of each component are:
(gross weight is 100Kg)
Component Adipic acid Sodium carboxymethylcellulose Carbonyl diamide Ferric sulfate Copper sulphate Manganese sulfate
Weight (kg) 60 25 2 5 3 5
Percentage by weight (%) 60 25 2 5 3 5
The using method of desulfurization synergistic agent is as follows:
A, with above-mentioned raw materials composite rear one-tenth finished product in proportion;
B, above-mentioned desulfurization synergistic agent is joined in absorption tower, initial addition is 0.4 ‰ of lime stone slurry weight;
C, desulphurization system after operation a period of time, are supplemented according to synergist loss situation.
Above-mentioned desulfurization synergistic agent is applied to inlet flue gas SO 2The concentration design load be 1584mg/Nm 3Desulphurization system in, the inlet flue gas SO of desulphurization system 2The concentration actual value be 2700mg/Nm 3The time, SO in the outlet flue gas 2Concentration be 143mg/Nm 3, liquid-gas ratio is 10.2, and calcium sulfur ratio is 1.02, and desulfuration efficiency is 94.7%, NO xDischarge capacity reduce by 20%.
Embodiment 3
The component of desulfurization synergistic agent and the percentage by weight of each component are:
(gross weight is 100Kg)
Component Adipic acid Sodium carboxymethylcellulose Carbonyl diamide Ferric sulfate Manganese sulfate
Weight (kg) 35 30 15 10 10
Percentage by weight (%) 35 30 15 10 10
The using method of desulfurization synergistic agent is as follows:
A, with above-mentioned raw materials composite rear one-tenth finished product in proportion;
B, above-mentioned desulfurization synergistic agent is joined in absorption tower, initial addition is 0.5 ‰ of lime stone slurry weight;
C, desulphurization system after operation a period of time, are supplemented according to synergist loss situation.
Above-mentioned desulfurization synergistic agent is applied to inlet flue gas SO 2The concentration design load be 1584mg/Nm 3Desulphurization system in, the inlet flue gas SO of desulphurization system 2The concentration actual value be 3000mg/Nm 3The time, SO in the outlet flue gas 2Concentration be 190mg/Nm 3, liquid-gas ratio is 10.2, and calcium sulfur ratio is 1.01, and desulfuration efficiency is 93.6%, NO xDischarge capacity reduce by 48%.
Embodiment 4
The component of desulfurization synergistic agent and the percentage by weight of each component are:
(gross weight is 100Kg)
Component Adipic acid Sodium carboxymethylcellulose Carbonyl diamide Ferric sulfate Copper sulphate
Weight (kg) 32 35 20 8 5
Percentage by weight (%) 32 35 20 8 5
Above-mentioned desulfurization synergistic agent is applied to inlet flue gas SO 2The concentration design load be 1584mg/Nm 3Desulphurization system in, the inlet flue gas SO of desulphurization system 2The concentration actual value be 2600mg/Nm 3The time, SO in the outlet flue gas 2Concentration be 135mg/Nm 3, liquid-gas ratio is 10.2, and calcium sulfur ratio is 1.03, and desulfuration efficiency is 94.8%, NO xDischarge capacity reduce by 50%.
Embodiment 5
The component of desulfurization synergistic agent and the percentage by weight of each component are:
(gross weight is 100Kg)
Component Adipic acid Sodium carboxymethylcellulose Carbonyl diamide Ferric sulfate
Weight (kg) 40 40 8 12
Percentage by weight (%) 40 40 8 12
Above-mentioned desulfurization synergistic agent is applied to inlet flue gas SO 2The concentration design load be 1584mg/Nm 3Desulphurization system in, the inlet flue gas SO of desulphurization system 2The concentration actual value be 2800mg/Nm 3The time, SO in the outlet flue gas 2Concentration be 154mg/Nm 3, liquid-gas ratio is 10.2, and calcium sulfur ratio is 1.01, and desulfuration efficiency is 94.5%, NO xDischarge capacity reduce by 38%.
Embodiment 6
The component of desulfurization synergistic agent and the percentage by weight of each component are:
(gross weight is 100Kg)
Component Adipic acid Sodium carboxymethylcellulose Carbonyl diamide Copper sulphate
Weight (kg) 45 38 7 10
Percentage by weight (%) 45 38 7 10
Above-mentioned desulfurization synergistic agent is applied to inlet flue gas SO 2The concentration design load be 1584mg/Nm 3Desulphurization system in, the inlet flue gas SO of desulphurization system 2The concentration actual value be 2500mg/Nm 3The time, SO in the outlet flue gas 2Concentration be 130mg/Nm 3, liquid-gas ratio is 10.2, and calcium sulfur ratio is 1.02, and desulfuration efficiency is 94.8%, NO xDischarge capacity reduce by 30%.
Embodiment 7
The component of desulfurization synergistic agent and the percentage by weight of each component are:
(gross weight is 100Kg)
Component Adipic acid Sodium carboxymethylcellulose Carbonyl diamide Manganese sulfate
Weight (kg) 38 42 12 8
Percentage by weight (%) 38 42 12 8
Above-mentioned desulfurization synergistic agent is applied to inlet flue gas SO 2The concentration design load be 1584mg/Nm 3Desulphurization system in, the inlet flue gas SO of desulphurization system 2The concentration actual value be 2800mg/Nm 3The time, SO in the outlet flue gas 2Concentration be 162mg/Nm 3, liquid-gas ratio is 10.2, and calcium sulfur ratio is 1.01, and desulfuration efficiency is 94.2%, NO xDischarge capacity reduce by 45%.
Embodiment 8
The component of desulfurization synergistic agent and the percentage by weight of each component are:
(gross weight is 100Kg)
Component Adipic acid Sodium carboxymethylcellulose Carbonyl diamide Copper sulphate
Weight (kg) 50 35 10 5
Percentage by weight (%) 50 35 10 5
Above-mentioned desulfurization synergistic agent is applied to inlet flue gas SO 2The concentration design load be 1584mg/Nm 3Desulphurization system in, the inlet flue gas SO of desulphurization system 2The concentration actual value be 2600mg/Nm 3The time, SO in the outlet flue gas 2Concentration be 140mg/Nm 3, liquid-gas ratio is 10.2, and calcium sulfur ratio is 1.03, and desulfuration efficiency is 94.6%, NO xDischarge capacity reduce by 40%.
Embodiment 9
The component of desulfurization synergistic agent and the percentage by weight of each component are:
(gross weight is 100Kg)
Component Adipic acid Sodium carboxymethylcellulose Carbonyl diamide Ferric sulfate Copper sulphate Manganese sulfate
Weight (kg) 55 30 4 8 1 2
Percentage by weight (%) 55 30 4 8 1 2
Above-mentioned desulfurization synergistic agent is applied to inlet flue gas SO 2The concentration design load be 1584mg/Nm 3Desulphurization system in, the inlet flue gas SO of desulphurization system 2The concentration actual value be 2900mg/Nm 3The time, SO in the outlet flue gas 2Concentration be 182mg/Nm 3, liquid-gas ratio is 10.2, and calcium sulfur ratio is 1.01, and desulfuration efficiency is 93.7%, NO xDischarge capacity reduce by 25%.
Embodiment 10
The component of desulfurization synergistic agent and the percentage by weight of each component are:
(gross weight is 100Kg)
Component Adipic acid Sodium carboxymethylcellulose Carbonyl diamide Ferric sulfate Copper sulphate Manganese sulfate
Weight (kg) 35 45 8 2 5 5
Percentage by weight (%) 35 45 8 2 5 5
Above-mentioned desulfurization synergistic agent is applied to inlet flue gas SO 2The concentration design load be 1584mg/Nm 3Desulphurization system in, the inlet flue gas SO of desulphurization system 2The concentration actual value be 2800mg/Nm 3The time, SO in the outlet flue gas 2Concentration be 174mg/Nm 3, liquid-gas ratio is 10.2, and calcium sulfur ratio is 1.01, and desulfuration efficiency is 93.8%, NO xDischarge capacity reduce by 35%.
Embodiment 11
The component of desulfurization synergistic agent and the percentage by weight of each component are:
(gross weight is 100Kg)
Component Adipic acid Sodium carboxymethylcellulose Carbonyl diamide Ferric sulfate Copper sulphate Manganese sulfate
Weight (kg) 36 36 18 6 3 1
Percentage by weight (%) 36 36 18 6 3 1
Above-mentioned desulfurization synergistic agent is applied to inlet flue gas SO 2The concentration design load be 1584mg/Nm 3Desulphurization system in, the inlet flue gas SO of desulphurization system 2The concentration actual value be 2900mg/Nm 3The time, SO in the outlet flue gas 2Concentration be 182mg/Nm 3, liquid-gas ratio is 10.2, and calcium sulfur ratio is 1.03, and desulfuration efficiency is 93.9%, NO xDischarge capacity reduce by 47%.
Embodiment 12
The component of desulfurization synergistic agent and the percentage by weight of each component are:
(gross weight is 100Kg)
Component Adipic acid Sodium carboxymethylcellulose Carbonyl diamide Ferric sulfate Copper sulphate Manganese sulfate
Weight (kg) 42 40 8 3 3 4
Percentage by weight (%) 42 40 8 3 3 4
Above-mentioned desulfurization synergistic agent is applied to inlet flue gas SO 2The concentration design load be 1584mg/Nm 3Desulphurization system in, the inlet flue gas SO of desulphurization system 2The concentration actual value be 3000mg/Nm 3The time, SO in the outlet flue gas 2Concentration be 195mg/Nm 3, liquid-gas ratio is 10.2, and calcium sulfur ratio is 1.02, and desulfuration efficiency is 93.5%, NO xDischarge capacity reduce by 39%.
Embodiment 13
The component of desulfurization synergistic agent and the percentage by weight of each component are:
(gross weight is 100Kg)
Component Adipic acid Sodium carboxymethylcellulose Carbonyl diamide Ferric sulfate Copper sulphate Manganese sulfate
Weight (kg) 46 31 15 5 1 2
Percentage by weight (%) 46 31 15 5 1 2
Above-mentioned desulfurization synergistic agent is applied to inlet flue gas SO 2The concentration design load be 1584mg/Nm 3Desulphurization system in, the inlet flue gas SO of desulphurization system 2The concentration actual value be 2750mg/Nm 3The time, SO in the outlet flue gas 2Concentration be 156mg/Nm 3, liquid-gas ratio is 10.2, and calcium sulfur ratio is 1.01, and desulfuration efficiency is 94.3%, NO xDischarge capacity reduce by 46%.
Embodiment 14
The component of desulfurization synergistic agent and the percentage by weight of each component are:
(gross weight is 100Kg)
Component Adipic acid Sodium carboxymethylcellulose Carbonyl diamide Ferric sulfate Copper sulphate Manganese sulfate
Weight (kg) 44 37 10 4 2 3
Percentage by weight (%) 44 37 10 4 2 3
Above-mentioned desulfurization synergistic agent is applied to inlet flue gas SO 2The concentration design load be 1584mg/Nm 3Desulphurization system in, the inlet flue gas SO of desulphurization system 2The concentration actual value be 2850mg/Nm 3The time, SO in the outlet flue gas 2Concentration be 178mg/Nm 3, liquid-gas ratio is 10.2, and calcium sulfur ratio is 1.02, and desulfuration efficiency is 93.7%, NO xDischarge capacity reduce by 42%.

Claims (4)

1. a flue gas desulfurization synergist, is characterized in that, the quality percentage composition of the component of described desulfurization synergistic agent and each component is:
Adipic acid: 30-60%; Sodium carboxymethylcellulose: 25-50%; Carbonyl diamide: 2-20%; Catalytic oxidant: 3-20%.
2. flue gas desulfurization synergist according to claim 1, is characterized in that, described catalytic oxidant is at least a in ferric sulfate, copper sulphate, manganese sulfate.
3. flue gas desulfurization synergist according to claim 2, is characterized in that, the quality percentage composition of the component of described desulfurization synergistic agent and each component is:
Adipic acid: 35-55%; Sodium carboxymethylcellulose: 30-45%; Carbonyl diamide: 4-18%; Ferric sulfate: 2-8%;
Copper sulphate: 1-5%; Manganese sulfate: 1-5%.
4. desulfurization synergist according to claim 2, is characterized in that, the quality percentage composition of the component of described desulfurization synergistic agent and each component is:
Adipic acid: 40-50%; Sodium carboxymethylcellulose: 30-40%; Carbonyl diamide: 8-15%; Ferric sulfate: 3-5%;
Copper sulphate: 1-3%; Manganese sulfate: 2-4%.
CN201210137703XA 2012-05-07 2012-05-07 Flue gas desulphurization synergist Pending CN103386242A (en)

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Cited By (6)

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CN105771620A (en) * 2016-05-05 2016-07-20 张锐 Efficient desulfurizer and preparation method thereof
CN105854511A (en) * 2016-05-24 2016-08-17 南京华电节能环保设备有限公司 Exhaust gas sulphur removal agent
CN106178938A (en) * 2016-07-25 2016-12-07 合肥天翔环境工程有限公司 Coal burning flue gas desulfurization agent and preparation method thereof
CN106731609A (en) * 2017-01-09 2017-05-31 山东兴达化工有限公司 Coal-fired flue gas desulfurization and denitration agent and its desulfurization denitration method
CN108114587A (en) * 2017-12-31 2018-06-05 华电高科环保技术有限公司 The Desulfurization synergist of wet process of FGD
CN108176217A (en) * 2018-01-10 2018-06-19 北京国电龙源环保工程有限公司 For the Desulfurization synergist and its preparation and application of calcium base wet-process desulfurization

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105771620A (en) * 2016-05-05 2016-07-20 张锐 Efficient desulfurizer and preparation method thereof
CN105854511A (en) * 2016-05-24 2016-08-17 南京华电节能环保设备有限公司 Exhaust gas sulphur removal agent
CN106178938A (en) * 2016-07-25 2016-12-07 合肥天翔环境工程有限公司 Coal burning flue gas desulfurization agent and preparation method thereof
CN106731609A (en) * 2017-01-09 2017-05-31 山东兴达化工有限公司 Coal-fired flue gas desulfurization and denitration agent and its desulfurization denitration method
CN108114587A (en) * 2017-12-31 2018-06-05 华电高科环保技术有限公司 The Desulfurization synergist of wet process of FGD
CN108114587B (en) * 2017-12-31 2021-03-16 华电高科环保技术有限公司 Desulfurization synergist for wet flue gas desulfurization
CN108176217A (en) * 2018-01-10 2018-06-19 北京国电龙源环保工程有限公司 For the Desulfurization synergist and its preparation and application of calcium base wet-process desulfurization

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Application publication date: 20131113