CN107617395A - A kind of preparation method of binder materials - Google Patents

A kind of preparation method of binder materials Download PDF

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Publication number
CN107617395A
CN107617395A CN201710944273.5A CN201710944273A CN107617395A CN 107617395 A CN107617395 A CN 107617395A CN 201710944273 A CN201710944273 A CN 201710944273A CN 107617395 A CN107617395 A CN 107617395A
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magnesia
flue gas
binder materials
weight
accessory substance
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CN201710944273.5A
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Chinese (zh)
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童裳慧
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中晶蓝实业有限公司
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Publication of CN107617395A publication Critical patent/CN107617395A/en

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Abstract

The invention discloses a kind of preparation method of binder materials, including:(1) use desulphurization denitration catalyst by the oxidizing sulfur dioxide of flue gas for sulfur trioxide, and be nitrogen dioxide by oxidation of nitric oxide, dry desulfurization denitration is then carried out using absorbent, so as to form accessory substance;Wherein, the absorbent includes magnesia;(2) accessory substance is well mixed with magnesia, industrial solid wastes and additive to obtain the binder materials;The active component includes KMnO4And nanosize metal oxide, the nanosize metal oxide include V2O5、CoO、Co2O3、Fe2O3And MnO2.The present invention can realize that flue gas desulfurization and denitrification, solid waste integration are administered, and obtain qualified binder materials.

Description

A kind of preparation method of binder materials

Technical field

The present invention relates to a kind of preparation method of binder materials, especially one kind to prepare glue based on dry flue gas desulphurization denitration The method of gel material.

Background technology

Influence of the industrial development to environment mainly has two categories below:(1) trans-frontier pollution, such as sulfur dioxide SO2, nitrogen oxides NOxCaused acid rain;(2) ground contamination is worked as, such as dust, ash, slag and the contaminated wastewater in discharging fume.Wherein, it is most of local Pollution is relevant with the flue gas that combustion apparatus particularly coal-burning boiler is discharged.Therefore, gas cleaning is that coal-burning power plant compels in the world It is essential the problem of to be solved.

China is a country using coal as main energy sources, coal fired power generation be the most important approach that utilizes of coal in China it One.According to the national conditions in China, 21st century coal fired power generation will occupy an leading position.In the numerous big of fossil-fired unit discharge In gas pollutant, SO2、NOxAnd harm of the dust to environment is larger, therefore, they are the major pollutants for needing to control.With The progress and expanding economy of society, pollution of the thermal power plant to atmospheric environment is by the common concern of people.Therefore, effectively It is the severe challenge that China's energy field sustainable development is faced that pollutant emission, which is reduced, to improve the influence of environment.

Current existing flue gases purification is both for the desulfurization (SO in removing flue gas2), denitration (removing flue gas in NOx) and individually researched and developed the problem of remove dust this several respect in flue gas, there is respective set of system And technological process.If it is desired to by the SO in flue gas2、NOxRemove simultaneously, so as to reach the discharge standard of permission, then need at least two Cover independent removing system and technological process.To so cause technological process is complicated, floor space is huge, equipment investment repeats, Operating cost is high.In addition, the system how these are not done mutually to connection reasonably organizes the gas cleaning for having reached higher There is also many problems for efficiency.

For flue gas desulfurization technique, recycle stream is carried out largely using calcium base particle as desulfurizing agent both at home and abroad at present The dry flue gas desulphurization of state.The main component of desulfurizing byproduct after its gas cleaning is calcium sulfite CaSO3, and CaSO3Very Difficulty is recycled, and this turns into the biggest obstacle in the application of current dry flue gas desulphurization engineering.

For gas denitrifying technology, the current domestic low NO primarily directed to combustion processxGenerate and carry out a large amount of Research, passes through various low NOxTechnology design has gone out various low NOxBurner, but combustion technology can not meet clean cigarette well The environmental requirement of gas, and influenceed by factors such as coal characteristic, service conditions, got over the distance of increasingly strict environmental requirement Come more remote.Although the SCR of Thermal generation unit or selective non-catalytic reduction method SNCR can be realized used by foreign countries Very high denitration efficiency, meet very strict environmental protection standard, but its flue gas denitrification system is huge, equipment composition is complicated, investment And operating cost is high.This is for meeting that the developing in harmony for improvement of China's using energy source and air pollution requires exist necessarily It is difficult.

Since 2005, magnesium oxide method flue gas desulfurization technique obtains being widely recognized as steel and electricity power enterprise, this and oxygen The advantage for changing magnesium processes desulfurization technology is inseparable.Everybody generally believe magnesium oxide method have desulfuration efficiency high (up to more than 90%), The features such as initial investment is few, operation maintenance cost is low.It is a kind of competitive desulfurization technology in the area for having magnesium ore resources. Current most enterprise carries out flue gas desulfurization, magnesium sulfate, the processing side of magnesium sulfite waste liquid produced by desulfurization using magnesia Method is broadly divided into method of reproduction, abandons method, absorption method etc..Enterprise using method of abandoning is in the majority, the processing mode of this desulfurization waste liquor Substantial amounts of water resource waste is caused, and pollution is produced to surrounding environment, and solid matter can form secondary pollution.

The content of the invention

It is a discovery of the invention that by catalyst by SO2, NO be oxidized into SO3、NO2, then use using magnesia to be main former The desulphurization denitration absorbent of material, generates the accessory substance based on magnesium sulfate, magnesium nitrate.The accessory substance that is achieved in that and flyash, The industrial solid castoffs such as slag, grain slag superfine powder and building solid waste mix by a certain percentage, can produce a kind of gelling material Material, and then it is used for building material industry.It is an object of the present invention to provide a kind of preparation method of binder materials, and it can be avoided Excessive industrial wastewater is produced, and can realize that flue gas desulfurization and denitrification, solid waste integration are administered, qualified gelling can also be obtained Material.

The present invention provides a kind of preparation method of binder materials, comprises the following steps:

(1) use desulphurization denitration catalyst by the oxidizing sulfur dioxide of flue gas for sulfur trioxide, and by oxidation of nitric oxide For nitrogen dioxide, dry desulfurization denitration is then carried out using absorbent, so as to form accessory substance;Wherein, the absorbent includes Magnesia;

(2) accessory substance is well mixed with magnesia, industrial solid wastes and additive to obtain the binder materials;

Wherein, the desulphurization denitration catalyst includes carrier and active component;The carrier is nanoscale amphoteric oxide, Selected from TiO2、ZrO2Or HfO2In one or more;The active component includes KMnO4And nanosize metal oxide, this is received Meter level metal oxide includes V2O5、CoO、Co2O3、Fe2O3And MnO2

Preparation in accordance with the present invention, it is preferable that, should based on 100 parts by weight desulphurization denitration catalyst in step (1) Desulphurization denitration catalyst includes following components:

Preparation in accordance with the present invention, it is preferable that, should based on 100 parts by weight desulphurization denitration catalyst in step (1) Desulphurization denitration catalyst includes following components:

Preparation in accordance with the present invention, it is preferable that in step (1), the magnesia includes 70~85wt% activity Magnesia, and content of the nanoscale magnesium in the magnesia is 10~20wt%.

Preparation in accordance with the present invention, it is preferable that in step (1), the absorbent also includes calcium oxide and titanium dioxide Silicon.

Preparation in accordance with the present invention, it is preferable that in step (1), the content of sulfur dioxide of the flue gas for 300~ 20000mg/Nm3, amount of nitrogen oxides be 50~600mg/Nm3, oxygen content be 10~20vol%, flow velocity be 2~5m/s and Temperature is 100~160 DEG C.

Preparation in accordance with the present invention, it is preferable that the industrial solid wastes are selected from flyash, slag powders, building rubbish One or more in rubbish powder.

Preparation in accordance with the present invention, it is preferable that the additive is selected from dihydric phosphate, dibasic alkaliine, winestone One or more in acid, tartrate or ATMP.

Preparation in accordance with the present invention, it is preferable that in step (2), accessory substance and magnesia, industrial solid wastes and add The weight ratio for adding agent is 50~100:50~100:30~80:2~10.

Preparation in accordance with the present invention, it is preferable that in step (2), it is 10 that the industrial solid wastes, which are selected from weight ratio, ~35:The composition of 30~50 slag powders and flyash composition.

Dry state sulfate and nitrate can be obtained as flue gas desulfurization and denitrification using the catalyst and absorbent of the present invention Accessory substance, compared with wet desulphurization denitration, save the processing steps such as slurries fractional crystallization.The present invention uses desulphurization denitration accessory substance Produced in binder materials, so as to realize zero-emission, suitable for industrialized production., can be with according to currently preferred technical scheme Denitrification efficiency is improved, and can stably produce binder materials.

Embodiment

With reference to specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to This.

Binder materials is also referred to as " cementitious matter ", refers to after physics, chemical action, can become firm stone shape from slurry The material of body.Binder materials can be with other cementing shots or the material of bulk, so as to as the entirety with certain mechanical strength Material.The preparation method of the binder materials of the present invention includes:(1) flue gas desulfurization and denitrification step;(2) blend step.Carry out below It is discussed in detail.

<Flue gas desulfurization and denitrification step>

Flue gas is subjected to pre- dedusting in pre- cleaner, so as to remove large particulate matter, obtains pre- dedusting flue gas.Using The oxidizing sulfur dioxide of pre- dedusting flue gas is sulfur trioxide by desulphurization denitration catalyst, and is titanium dioxide by oxidation of nitric oxide Nitrogen, so as to form pretreated fumes.Dry desulfurization denitration is carried out to pretreated fumes using absorbent, so as to form accessory substance.

The desulphurization denitration catalyst of the present invention includes carrier and active component, and active component is supported on carrier, for inciting somebody to action Oxidizing sulfur dioxide in flue gas is sulfur trioxide, and is nitrogen dioxide by oxidation of nitric oxide.Carrier can be nanoscale two Property oxide.For example, carrier is selected from TiO2、ZrO2Or HfO2In one or more;Preferably TiO2And ZrO2Combination.Activity Composition includes nanosize metal oxide and KMnO4.The nanosize metal oxide includes V2O5、CoO、Co2O3、Fe2O3With MnO2。V2O5It is main to be responsible for SO2Catalysis oxidation is SO3, CoO, Co2O3、Fe2O3、MnO2And KMnO4It is main to be responsible for NO being catalyzed oxygen Turn to NO2.Such combination can be sulfur trioxide and titanium dioxide fully by the sulfur dioxide in flue gas and oxidation of nitric oxide Nitrogen.

According to an embodiment of the invention, based on 100 parts by weight desulphurization denitration catalyst, the desulphurization denitration catalyst Including 30~60 parts by weight TiO2, 10~30 parts by weight ZrO2, 2~10 parts by weight V2O5, 2~10 parts by weight CoO, 1~5 weight Part Co2O3, 3~10 parts by weight Fe2O3, 5~15 parts by weight MnO2With 2~10 parts by weight KMnO4.Preferably, the desulphurization denitration is urged Agent includes 50~58 parts by weight TiO2, 12~20 parts by weight ZrO2, 3~8 parts by weight V2O5, 3~8 parts by weight CoO, 2~5 weights Measure part Co2O3, 3~8 parts by weight Fe2O3, 6~10 parts by weight MnO2With 3~8 parts by weight KMnO4.It is highly preferred that the desulphurization denitration Catalyst includes 53~56 parts by weight TiO2, 13~16 parts by weight ZrO2, 4~6 parts by weight V2O5, 5~6 parts by weight CoO, 3~5 Parts by weight Co2O3, 3~5 parts by weight Fe2O3, 7~9 parts by weight MnO2With 5~7 parts by weight KMnO4.According to the reality of the present invention Mode is applied, the desulphurization denitration catalyst only includes said components.Above-mentioned active component is controlled in above range, can be notable Improve it to the sulfur dioxide in flue gas and nitric oxide production oxidation effectiveness, so as to improve desulfurization off sulfide effect.

The desulphurization denitration catalyst of the present invention can use conventional method to obtain, such as infusion process.Nano level metal aoxidizes Thing can use the synthesis of the conventional methods such as sol-gel process, Hydrolyze method, hydrothermal synthesis method.Here repeat no more.Nano level metal The particle diameter of oxide can be 2~100nm, and specific surface area is 100~300m2/g.Potassium permanganate can impregnate in the form of a solution.

The absorbent of the present invention includes magnesia.Magnesia can include light calcined magnesia, micron order magnesia and/or receive Meter level magnesia.According to an embodiment of the invention, the magnesia includes 70~85wt% activated magnesia, preferably For 80~85% activated magnesia;And content of the nanoscale magnesium in the magnesia is 10~20wt%, it is preferably 15~20wt%.By using the exclusive property of some nanoparticles of nanoscale magnesium, denitrification efficiency can be improved. The formation of magnesium sulfate and magnesium nitrate is so more beneficial for, so as to improve flue gas desulfurization and denitrification effect.In the present invention, the absorption Agent can only include above-mentioned magnesia, can also comprise additionally in the modifying agent such as calcium oxide and silica.Modifying agent be micron order, Nano level metal oxide.In order to improve removal efficiency, absorbent of the invention is powdered.Its particle diameter can be 0.5~ 10 microns, preferably 1~5 micron.Directly absorbent can so be mixed with flue gas, and then desulphurization denitration is carried out to flue gas, So as to complete the desulphurization denitration of flue gas in the case where not needing a large amount of process waters, and a large amount of industrial wastes are not produced.For example, Absorbent dry powder is sufficiently mixed with flue gas in flue, desulphurization denitration processing, desulphurization denitration are carried out subsequently into absorption tower Flue gas afterwards is discharged by chimney.

Dry flue gas desulphurization denitration is carried out using above-mentioned desulphurization denitration catalyst and absorbent.The sulfur dioxide of the flue gas Content can be 300~20000mg/Nm3, be preferably 500~10000mg/Nm3, more preferably 1000~3000mg/Nm3.Nitrogen Oxide content can be 50~600mg/Nm3, be preferably 100~500mg/Nm3, more preferably 300~500mg/Nm3.Oxygen Content can be 10~20vol%, be preferably 15~18vol%.Temperature is 110~160 DEG C;Preferably 120~135 DEG C.This Outside, the flow velocity of flue gas can be 2~5m/s, preferably 2.5~3.5m/s.Above-mentioned Gas Parameters represent the ginseng at smoke inlet Number;The parameter of smoke outlet is depending on practical sulphur removal denitration situation.Using above-mentioned technological parameter, it is steady to be advantageous to acquisition quality Fixed accessory substance, so as to be advantageous to the steady production of binder materials.

<Blend step>

Accessory substance is well mixed with magnesia, industrial solid wastes and additive to obtain the binder materials.In this hair In bright, accessory substance, magnesia, industrial solid wastes and additive can be respectively ground to more than 200 mesh in advance, are preferably More than 250 mesh, then mixed;Accessory substance, magnesia, industrial solid wastes and additive are mixed Thing, then gained mixture is ground to more than 200 mesh, preferably more than 250 mesh;Or by the accessory substance after grinding, oxidation Magnesium, industrial solid wastes and additive mixing, then further grinding obtains binder materials.

In the present invention, the weight ratio of accessory substance and magnesia, industrial solid wastes and additive can be 50~100: 50~100:30~80:2~10.Preferably, their weight ratio is 60~80:60~80:50~60:5~10.So can be with Fully ensure that the combination property of binder materials.

In the present invention, the industrial solid wastes can be selected from one kind in flyash, slag powders or building waste powder It is or a variety of;Preferably flyash and/or slag powders.The example of the slag powders of the present invention includes but is not limited to the stove after ball milling Slag, slag, slag or scum.Flyash is the fine ash that catching is got off from the flue gas after coal combustion, and flyash is coal-burning power plant The primary solids waste of discharge.Slag is ironmaking, the slag charge of steel-making discharge.Building waste powder is the powder using building waste as raw material The broken industrial solid wastes formed.Using above-mentioned industrial solid wastes, be advantageous to obtain the binder materials of steady quality.Industrial Solid The granularity of body waste is preferably more than 200 mesh, more preferably more than 250 mesh.According to an embodiment of the invention, the work Industry solid waste is selected from slag powders and flyash of the granularity more than 200 mesh.

In the present invention, the additive is selected from dihydric phosphate, dibasic alkaliine, tartaric acid, tartrate or amino One or more in trimethylene phosphonic;Preferably dihydric phosphate or dibasic alkaliine.Specific example includes but unlimited In sodium dihydrogen phosphate or disodium-hydrogen.Using above-mentioned additive, the combination property of binder materials can be fully ensured that.

According to an embodiment of the invention, it is 10~35 that the industrial solid wastes, which can be selected from weight ratio,:30~ The composition of 50 slag powders and flyash composition;Preferably weight ratio is 20~25:30~35 slag powders and flyash group Into composition.

" part " in following preparation example and embodiment represents parts by weight, unless specifically stated otherwise.

The performance of the binder materials of following examples is measured using GB/T50448-2008, is 0.35 according to water-cement ratio Prepare sample.Wherein, density and water absorption rate are the test result for conserving 28d.

Preparation example 1

By V2O5、CoO、Co2O3、Fe2O3、MnO2、KMnO4As active component, TiO2And ZrO2As carrier using dipping Method obtains desulphurization denitration catalyst.

Table 1, desulphurization denitration catalyst formulation

TiO2 56.0 parts by weight ZrO2 15.0 parts by weight V2O5 4.0 parts by weight CoO 5.0 parts by weight Co2O3 5.0 parts by weight Fe2O3 3.0 parts by weight MnO2 7.0 parts by weight KMnO4 5.0 parts by weight

Embodiment 1

(1) use the desulphurization denitration catalyst of preparation example 1 by the oxidizing sulfur dioxide of flue gas for sulfur trioxide, and by an oxygen Change nitrogen oxidation is nitrogen dioxide, and then using absorbent, (magnesium oxide powder, it contains 80wt% activated magnesia, nano oxygen Change content of magnesium is 15wt%) dry desulfurization denitration is carried out, so as to form accessory substance.Flow velocity is 2.5m/s, and oxygen content is 15vol%;The other specification of smoke inlet, the parameter of exhanst gas outlet are as shown in tables 2 and 3.

(2) by accessory substances more than 200 mesh and industrial solid wastes (flyash, slag powders) more than magnesia, 200 mesh It is well mixed with additive (sodium dihydrogen phosphate) and obtains the binder materials.

Table 2, smoke inlet parameter

Sequence number Parameter Unit Numerical value 1 Desulfurizing tower inlet flue gas amount (operating mode) m3/h 120000 2 Desulfurizing tower inlet flue gas amount (mark condition wet basis) Nm3/h 80294 3 Desulfurizing tower inlet flue gas temperature 135 4 SO2Entrance concentration mg/Nm3 2000 5 Entrance nitric oxide concentration mg/Nm3 450 6 Humidity of flue gas % 5.7

Table 3, exhanst gas outlet parameter

Sequence number Project Quantity Unit 1 Exiting flue gas amount (operating mode) 42353 m3/h 2 Exhaust gas temperature 65 3 Sulfur dioxide emissioning concentration 23 mg/Nm3 4 Desulfuration efficiency 99.51 % 5 Discharged nitrous oxides concentration 50 mg/Nm3 6 Denitration efficiency 96 % 7 The quantum of output of accessory substance 5.34 t/h

Binder materials material proportion and the performance test results such as table 4 and table 5.The performance of binder materials uses GB/T50448- 2008 are measured.Wherein, density, water absorption rate are the test result for conserving 28d.

The material proportion of table 4, binder materials

Specification Accessory substance Magnesia Slag Flyash Additive g 80 60 20 35 5

The testing result of table 5, binder materials

Embodiment 2

Material proportion except changing binder materials, remaining condition are same as Example 1.Binder materials material proportion and property Energy test result is referring to table 6 and table 7.

Table 6, binder materials material proportion

Specification Accessory substance Magnesia Slag Flyash Additive g 60 80 20 35 5

Table 7, binder materials the performance test results

Embodiment 3

Material proportion except changing binder materials, remaining condition are same as Example 1.Binder materials material proportion and property Energy test result is referring to table 8 and table 9.

Table 8, binder materials material proportion

Specification Accessory substance Magnesia Slag Flyash Additive g 70 70 20 35 5

Table 9, binder materials the performance test results

The present invention is not limited to above-mentioned embodiment, in the case of without departing substantially from the substantive content of the present invention, this area skill Any deformation, improvement, the replacement that art personnel are contemplated that each fall within the scope of the present invention.

Claims (10)

1. a kind of preparation method of binder materials, it is characterised in that comprise the following steps:
(1) use desulphurization denitration catalyst by the oxidizing sulfur dioxide of flue gas for sulfur trioxide, and be two by oxidation of nitric oxide Nitrogen oxide, dry desulfurization denitration is then carried out using absorbent, so as to form accessory substance;Wherein, the absorbent includes oxidation Magnesium;
(2) accessory substance is well mixed with magnesia, industrial solid wastes and additive to obtain the binder materials;
Wherein, the desulphurization denitration catalyst includes carrier and active component;The carrier is nanoscale amphoteric oxide, is selected from TiO2、ZrO2Or HfO2In one or more;The active component includes KMnO4And nanosize metal oxide, the nanoscale Metal oxide includes V2O5、CoO、Co2O3、Fe2O3And MnO2
2. preparation method according to claim 1, it is characterised in that in step (1), based on 100 parts by weight desulphurization denitrations Catalyst, the desulphurization denitration catalyst include following components:
3. preparation method according to claim 1, it is characterised in that in step (1), based on 100 parts by weight desulphurization denitrations Catalyst, the desulphurization denitration catalyst include following components:
4. preparation method according to claim 1, it is characterised in that in step (1), the magnesia include 70~ 85wt% activated magnesia, and content of the nanoscale magnesium in the magnesia is 10~20wt%.
5. preparation method according to claim 1, it is characterised in that in step (1), the absorbent also includes calcium oxide And silica.
6. preparation method according to claim 1, it is characterised in that in step (1), the content of sulfur dioxide of the flue gas For 300~20000mg/Nm3, amount of nitrogen oxides be 50~600mg/Nm3, oxygen content be 10~20vol%, flow velocity be 2~ 5m/s and temperature are 100~160 DEG C.
7. preparation method according to claim 1, it is characterised in that in step (2), the industrial solid wastes are selected from powder One or more in coal ash, slag powders, building waste powder.
8. preparation method according to claim 7, it is characterised in that in step (2), the additive is selected from biphosphate One or more in salt, dibasic alkaliine, tartaric acid, tartrate or ATMP.
9. according to the preparation method described in any one of claim 1~8, it is characterised in that in step (2), accessory substance and oxidation The weight ratio of magnesium, industrial solid wastes and additive is 50~100:50~100:30~80:2~10.
10. preparation method according to claim 9, it is characterised in that in step (2), the industrial solid wastes are selected from Weight ratio is 10~35:The composition of 30~50 slag powders and flyash composition.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102824844A (en) * 2012-09-11 2012-12-19 北京世能中晶能源科技有限公司 Desulfurization and denitrification agent, preparation method and application thereof
CN103301749A (en) * 2013-06-21 2013-09-18 艾荻环境技术(上海)有限公司 Method for simultaneously performing desulfurization and denitrification on smoke gas
CN104843749A (en) * 2015-05-19 2015-08-19 金小弟 Method for preparing raw materials of cementing materials from magnesia desulfurized waste fluid and waste residues
CN105859166A (en) * 2016-03-28 2016-08-17 北京中晶环境科技股份有限公司 Modified magnesium oxysulfate cement for foaming and foam material thereof
CN106512980A (en) * 2016-08-31 2017-03-22 上海奥威日化有限公司 Catalyst for producing sulfur trioxide from sulfur dioxide

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102824844A (en) * 2012-09-11 2012-12-19 北京世能中晶能源科技有限公司 Desulfurization and denitrification agent, preparation method and application thereof
CN103301749A (en) * 2013-06-21 2013-09-18 艾荻环境技术(上海)有限公司 Method for simultaneously performing desulfurization and denitrification on smoke gas
CN104843749A (en) * 2015-05-19 2015-08-19 金小弟 Method for preparing raw materials of cementing materials from magnesia desulfurized waste fluid and waste residues
CN105859166A (en) * 2016-03-28 2016-08-17 北京中晶环境科技股份有限公司 Modified magnesium oxysulfate cement for foaming and foam material thereof
CN106512980A (en) * 2016-08-31 2017-03-22 上海奥威日化有限公司 Catalyst for producing sulfur trioxide from sulfur dioxide

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Address after: 100176 Ronghua International Building, 10 Ronghua South Road, Beijing Daxing District, Beijing Economic and Technological Development Zone, 20th Floor

Applicant after: Zhongjing Blue Industrial Group Co., Ltd.

Address before: 100176 Ronghua International Building, 10 Ronghua South Road, Beijing Daxing District, Beijing Economic and Technological Development Zone, 20th Floor

Applicant before: MICROTEK blue Industrial Co., Ltd.

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CB02 Change of applicant information

Address after: 100176 Beijing City, Daxing District Beijing City, Beijing economic and Technological Development Zone ronghua Ronghua Road No. 10 international 3 building 20 layer

Applicant after: Zhongjing Kunlun Industrial Group Co., Ltd

Address before: 100176 Beijing City, Daxing District Beijing City, Beijing economic and Technological Development Zone ronghua Ronghua Road No. 10 international 3 building 20 layer

Applicant before: Zhongjing Blue Industrial Group Co.,Ltd.