CN105289267B - A kind of coal desulfurization denitrfying agent and preparation method thereof - Google Patents
A kind of coal desulfurization denitrfying agent and preparation method thereof Download PDFInfo
- Publication number
- CN105289267B CN105289267B CN201510819840.5A CN201510819840A CN105289267B CN 105289267 B CN105289267 B CN 105289267B CN 201510819840 A CN201510819840 A CN 201510819840A CN 105289267 B CN105289267 B CN 105289267B
- Authority
- CN
- China
- Prior art keywords
- rare
- agstone
- coal
- denitrfying agent
- earth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a kind of coal desulfurization denitrfying agent, belongs to coal desulfurization denitration technology field.Purpose is to provide a kind of coal desulfurization denitrfying agent, do not changing the coal burning process and equipment of existing CFBB, on the premise of not changing existing desulphurization system equipment and technique, desulfurization denitrification agent of the user according to the physical and chemical index using coal from the present invention, so as to reach the effect of desulphurization and denitration simultaneously.Coal desulfurization denitrfying agent includes agstone, in addition to rare-earth tailing, rare-earth tailing quality account for the 1%~8% of agstone quality.Its preparation method is to grind rare-earth tailing with ball mill, it is milled to 200 mesh, then it is placed in Muffle furnace and sinters, it is fabricated to porous material, by crusher in crushing into millimetre-sized particle, particle after again will be broken is added in agstone, wherein the granular mass after broken accounts for the 1%~8% of agstone quality.The present invention is not only suitable for using as coal desulfurization denitrfying agent, also add denitration effect.
Description
Technical field
Present invention relates particularly to a kind of coal desulfurization denitrfying agent and preparation method thereof, belongs to coal desulfurization denitration technology neck
Domain.
Background technology
Coal is the main energy sources in China, and the coal overwhelming majority produced is used to directly burn.Fire coal produces sulfur dioxide (SO2)
With nitrogen oxides (N0X) caused by atmosphere pollution and acid rain had a strong impact on the sustainable development of improvement of the ecological environment and related industry
Exhibition.Sulfur dioxide (S02) and nitrogen oxides (N0X) be two kinds of main atmosphere pollutions, have to the ecosystem and health
There is great harm.The S0 of China2And N0XDischarge capacity ranks the first in the world, and research desulphurization denitration technology is to control air pollution in China
It is significant.Simultaneous SO_2 and NO removal technology can reach S0 in a unit process2The purpose removed simultaneously with NOx, tool
There is unrivaled superiority.
Simultaneous SO_2 and NO removal technology refers to use a kind of reactant, including catalyst or adsorbent, incited somebody to action in a process
S0 in flue gas2While the technology removed in the lump with NOx can be divided into stove combustion process by processing procedure removing sulfuldioxide and
Flue gas removing sulfuldioxide simultaneously after combustion, wherein in stove combustion process while desulphurization denitration technology have from now on because of its low cost
The common feature of the prospect of the large-scale industrial application technical methods is removed in fuel combustion process using absorbent and generated
S02, reduce NOx generation by controlling the ignition temperature of boiler or toward penetrating reducing agent such as ammonia, urea etc. in stove, incite somebody to action
NOx is reduced to N2.Such as circulating fluidized bed technique (CFB) burner hearth lime (stone)/urea spraying technique, the technology is in proper temperature
In the range of, to furnace injection calcium-base absorbing agent and urea liquid, it may be achieved while desulfurization is out of stock.
For simultaneous SO_2 and NO removal technology, from the desulfurization denitrification agent of high-performance, low cost, do not changing existing recycle stream
The coal burning process and equipment of fluidized bed boiler, on the premise of not changing existing desulphurization system equipment and technique, reach good desulfurization,
The effect of denitration just becomes particularly significant, and this is also this area technical problem urgently to be resolved hurrily.
The content of the invention
Therefore, it is existing not changing present invention aims at the coal desulfurization denitrfying agent for providing a kind of high-performance, low cost
The coal burning process and equipment of CFBB, on the premise of not changing existing desulphurization system equipment and technique, user according to
Using the physical and chemical index of coal from desulfurization denitrification agent of the invention, so as to reach the effect of desulphurization and denitration simultaneously.
A kind of coal desulfurization denitrfying agent, including agstone, the coal desulfurization denitrfying agent also includes rare-earth tailing, described
Rare-earth tailing quality accounts for the 1%~8% of agstone quality.
Further, the rare-earth tailing main component is：Calcium oxide, di-iron trioxide, silica, magnesia, oxygen
Change barium, manganese oxide, cerium oxide, lanthana, alundum (Al2O3).
Further, the percentage that each main component quality accounts for rare-earth tailing gross mass is：Calcium oxide 28.44%,
Di-iron trioxide 11.32%, silica 1 2.87%, magnesia 4.4%, barium monoxide 4.25%, manganese oxide 2.3%, cerium oxide
2.96%, lanthana 1.46%, alundum (Al2O3) 1.55%.
The invention also discloses the preparation method of above-mentioned coal desulfurization denitrfying agent, methods described is by rare-earth tailing ball milling
Machine is ground, and is milled to 200 mesh, is then placed in Muffle furnace and is sintered, is fabricated to porous material, by crusher in crushing into millimetre-sized
Particle, then will it is broken after particle add in agstone, wherein the granular mass after broken account for agstone quality 1%~
8%.
The beneficial effects of the present invention are：A kind of coal desulfurization denitrfying agent of the present invention and preparation method thereof, utilizes rare earth
Mine tailing includes the characteristics of complex rare-earth oxidate containing valuable metal such as rare earth and alkaline-earth metal, transition metal, and rare-earth tailing is as additive to de-
The increased activity of lime stone in sulphur agent, increases desulfuration efficiency, adds denitration function again.Rare-earth tailing additive is circulating
Reclaimed in fluid bed after desulphurization denitration by cyclone separator, return in recirculating fluidized bed and work on, reduce production cost.
Embodiment
The embodiment of the present invention is illustrated below：
In the recirculating fluidized bed raw coal combustion stage, added rare-earth tailing as additive in agstone, rare-earth tailing
Quality accounts for the 1-8% of agstone quality, is mixed into out of stock dose of coal desulfurization.Each main component quality accounts for rare earth in rare-earth tailing
The percentage of mine tailing gross mass is：Calcium oxide 28.44%, di-iron trioxide 11.32%, silica 1 2.87%, magnesia
4.4%, barium monoxide 4.25%, manganese oxide 2.3%, cerium oxide 2.96%, lanthana 1.46%, alundum (Al2O3) 1.55%.
The preparation method of above-mentioned coal desulfurization denitrfying agent is milled to 200 mesh, Ran Houfang for rare-earth tailing is ground with ball mill
Sintered in Muffle furnace, be fabricated to porous material, by crusher in crushing into millimetre-sized particle, then will it is broken after particle add
Enter in agstone, wherein the granular mass after broken accounts for the 1%~8% of agstone quality.
The unique valence electron structure of rare earth element makes it have good catalytic action, and application field is extensive, but due into
Application of this height in coal burning in desulphurization denitration is rare.Rare-earth tailing is the discarded object after ore dressing of rare earth, in rare-earth tailing
Containing the complex rare-earth oxidate containing valuable metal such as rare earth and alkaline-earth metal, transition metal, there is preferable sulfur fixation and catalytic effect, rare earth is multiple
The activity, service life and heat-resistant stability of catalysis material can be greatly improved by closing the addition of oxide.Rare-earth tailing and lime
Stone mixes the effect that can reach simultaneous SO_2 and NO removal, while may also reach up the purpose to rare-earth tailing comprehensive utilization of resources,
So as to reduce environmental pollution and the wasting of resources that rare-earth tailing is brought
In the recirculating fluidized bed raw coal combustion stage, added rare-earth tailing as additive in agstone, rare-earth tailing
Quality accounts for the 1-8% of agstone quality, is mixed into out of stock dose of coal desulfurization.Because rare-earth tailing includes rare earth and alkaline earth gold
The complex rare-earth oxidate containing valuable metals such as category, transition metal, there is preferable sulfur fixation and catalytic effect.Rare-earth tailing additive is to desulfurization
The increased activity of lime stone in agent, increases desulfuration efficiency, adds denitration function again.Rare-earth tailing additive is in recycle stream
Reclaimed after changing in-bed desulfurization denitration by cyclone separator, return in recirculating fluidized bed that works on and cause without to existing
On the premise of device carries out any change, combustion of the rare-earth tailing additive to the high grey colm of high-sulfur in CFBB
Burn the function with desulphurization denitration.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (2)
1. a kind of coal desulfurization denitrfying agent, including agstone, it is characterised in that the coal desulfurization denitrfying agent also includes rare earth
Mine tailing, the rare-earth tailing quality account for the 1%~8% of agstone quality；
The rare-earth tailing main component is：Calcium oxide, di-iron trioxide, silica, magnesia, barium monoxide, manganese oxide, oxygen
Change cerium, lanthana, alundum (Al2O3)；
The percentage that each main component quality accounts for rare-earth tailing gross mass is：Calcium oxide 28.44%, di-iron trioxide
11.32%, silica 1 2.87%, magnesia 4.4%, barium monoxide 4.25%, manganese oxide 2.3%, cerium oxide 2.96%, oxygen
Change lanthanum 1.46%, alundum (Al2O3) 1.55%.
2. the preparation method of coal desulfurization denitrfying agent described in a kind of claim 1, it is characterised in that methods described is by rare earth tail
Mining ball mill is ground, and is milled to 200 mesh, is then placed in Muffle furnace and is sintered, is fabricated to porous material, by crusher in crushing into
Millimetre-sized particle, then will it is broken after particle add in agstone, wherein the granular mass after broken accounts for lime stone silty
The 1%~8% of amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510819840.5A CN105289267B (en) | 2015-11-23 | 2015-11-23 | A kind of coal desulfurization denitrfying agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510819840.5A CN105289267B (en) | 2015-11-23 | 2015-11-23 | A kind of coal desulfurization denitrfying agent and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105289267A CN105289267A (en) | 2016-02-03 |
| CN105289267B true CN105289267B (en) | 2017-12-12 |
Family
ID=55187495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510819840.5A Active CN105289267B (en) | 2015-11-23 | 2015-11-23 | A kind of coal desulfurization denitrfying agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105289267B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821523A (en) * | 2019-01-23 | 2019-05-31 | 内蒙古科技大学 | A kind of preparation method and applications of rare-earth tailing base SCR catalyst |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106753680A (en) * | 2016-12-05 | 2017-05-31 | 内蒙古科技大学 | A kind of coal-fired denitration additive and preparation method thereof |
| CN107029737A (en) * | 2017-05-24 | 2017-08-11 | 内蒙古科技大学 | A kind of mischmetal denitrating catalyst and preparation method thereof |
| CN107899596A (en) * | 2017-10-30 | 2018-04-13 | 昆明理工大学 | A kind of desulfurization denitrification agent and preparation method thereof |
| CN109534804B (en) * | 2018-12-21 | 2021-12-14 | 承德人和矿业有限责任公司 | Honeycomb ceramic carrier and preparation method thereof |
| CN109821550A (en) * | 2019-03-07 | 2019-05-31 | 内蒙古科技大学 | A kind of method of ceramic honey comb rare-earth base catalyst and preparation method thereof and a kind of coal combustion high-temperature flue gas denitration |
| CN110813070A (en) * | 2019-11-15 | 2020-02-21 | 中国神华能源股份有限公司萨拉齐电厂 | Carbide slag modifier for desulfurization of circulating fluidized bed boiler, modified carbide slag and preparation method thereof |
| CN113663504A (en) * | 2021-08-27 | 2021-11-19 | 中晶环境科技股份有限公司 | Desulfurization and denitrification solid particle and preparation method and application thereof |
| CN115029169A (en) * | 2022-04-28 | 2022-09-09 | 鞍钢股份有限公司 | Preparation method of sintered solid fuel |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19813655C2 (en) * | 1998-03-27 | 2000-04-27 | Degussa | Storage material for sulfur oxides, process for its production and use |
| CN100358983C (en) * | 2005-12-14 | 2008-01-02 | 邵登山 | Catalytic combustion-supporting addictive for blast furnace sprayed coal and its addition method |
| CN101531943A (en) * | 2009-01-06 | 2009-09-16 | 山西潞安环保能源开发股份有限公司 | Additive suitable for meagre coal and meagre lean coal for blast furnace injection |
| CN102268311A (en) * | 2011-07-08 | 2011-12-07 | 力博（天津）节能环保科技有限公司 | Coal-burning sulfur-fixing catalytic combustion compound additive and preparation method thereof |
-
2015
- 2015-11-23 CN CN201510819840.5A patent/CN105289267B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821523A (en) * | 2019-01-23 | 2019-05-31 | 内蒙古科技大学 | A kind of preparation method and applications of rare-earth tailing base SCR catalyst |
| CN109821523B (en) * | 2019-01-23 | 2021-10-08 | 内蒙古科技大学 | Preparation method and application of rare earth tailing-based SCR catalyst |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105289267A (en) | 2016-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105289267B (en) | A kind of coal desulfurization denitrfying agent and preparation method thereof | |
| CN101532782B (en) | Sintering gas purifying and waste heat recovering technique | |
| CN103453538B (en) | A kind of minimum discharge CFBB with three grades of desulphurization systems | |
| CN101220312A (en) | Coal powder injection catalytic combustion burning-rate accelerator of blast furnace | |
| CN101791561B (en) | Desulphurization and denitration catalyst and preparation method thereof | |
| CN109364711A (en) | A kind of flue gas system for the ultra-clean processing of cement kiln tail gas | |
| CN103301749A (en) | Method for simultaneously performing desulfurization and denitrification on smoke gas | |
| CN105091615A (en) | Comprehensive treatment method for iron ore sintering smoke pollutants | |
| CN203549871U (en) | Novel ultra-low emission circulating fluidized bed boiler | |
| CN107456865A (en) | The method of flue gas desulfurization and denitrification | |
| CN110404936B (en) | Comprehensive treatment method for semi-dry desulfurized fly ash | |
| CN105567365B (en) | Modified coal and its manufacturing method | |
| CN105854589A (en) | High-temperature in situ catalytic denitration method used for coal combustion process | |
| CN101983751B (en) | Device and method for removing smoke pollutants of sintering machine | |
| CN209490672U (en) | A kind of flue gas system for the ultra-clean processing of cement kiln tail gas | |
| CN104324575A (en) | Spray absorption type system for simultaneous desulphurization and denitration of sintering flue gas | |
| CN101775325A (en) | Coal composite sulfur fixing agent | |
| CN106178862A (en) | Sintering smoke denitrifier and preparation method thereof | |
| CN114682085B (en) | Method for preparing cement kiln synergistic desulfurization and denitrification agent by recycling hazardous waste and solid waste | |
| CN102350211B (en) | Three-stage desulfurization device for circulating fluidized bed boiler | |
| CN201832542U (en) | Selective flue gas desulfuration and denitration apparatus for sintering machines | |
| CN105987381B (en) | A kind of method of the coal-fired calcium sulfur ratio balance desulphurization denitration of CFB boiler optimization | |
| CN113117483A (en) | Integrated method for dry desulfurization and denitrification and cementing material manufacturing | |
| CN103143251B (en) | Purification method for industrial emission gas | |
| CN102373105B (en) | Fire coal or inferior coal desulfurizer for sulfur fixation in circulating fluidized bed boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |