CN104479792B - A kind of preparation method of the desulfurizing agent of boiler fired coal - Google Patents
A kind of preparation method of the desulfurizing agent of boiler fired coal Download PDFInfo
- Publication number
- CN104479792B CN104479792B CN201410829735.5A CN201410829735A CN104479792B CN 104479792 B CN104479792 B CN 104479792B CN 201410829735 A CN201410829735 A CN 201410829735A CN 104479792 B CN104479792 B CN 104479792B
- Authority
- CN
- China
- Prior art keywords
- desulfurizing agent
- parts
- preparation
- fired coal
- oxide
- 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
Abstract
The present invention discloses the preparation method of the desulfurizing agent of a kind of boiler fired coal, belongs to desulfurizing agent technical field.Comprise the steps: to add to water ANN aluminium nitrate nonahydrate, heat up, drip sodium hydroxide solution, be incubated after dropping, add calcium oxide, obtain collosol intermixture；Collosol intermixture is dried, then is sintered in Muffle furnace, obtain the aluminum oxide of calcium oxide doping；The aluminum oxide of calcium oxide doping, silica, iron oxide, sodium nitrate, zinc hydroxide, calcirm-fluoride, ferric trichloride, magnesia, iron powder, aluminium powder are mixed, and pulverize,.The present invention, by with aluminum oxide as carrier, has prepared to the utmost desulfurizing agent, coal-fired process preferably can carry out the effect of desulfurization, and can significantly increase fire box temperature.
Description
Technical field
The present invention discloses the preparation method of the desulfurizing agent of a kind of boiler fired coal, belongs to desulfurizing agent technical field.
Background technology
Due to China's energy resources feature and the restriction of the level of economic development. determine the energy resource structure based on coal and exist
China is by long-term existence.Use the result of the fossil fuels such as coal in a large number so that the atmosphere pollution of China is extremely serious.Titanium dioxide
Being continuously increased of sulfur emissions, by health, crop growth and volume increase, the Quality advance of industrial products and building and
All many-sides such as the protection of historical relic have the biggest harm. cause bigger economic loss.In order to control of acid rain pollutes, push away further
Wide particularly important with development flue gas desulfurization technique.Desulfurization technology and method generally can divide three major types. and i.e. de-in stokehole desulfuration, stove
Sulphur and flue gas desulfurization.
Wherein, in burning, desulfurization has generally comprised: 1, flue gas circulating fluidized bed desulfurization technology, flue gas circulating fluidized bed desulfurization
Technology is the desulfurization technology of new generation grown up the eighties in last century, due to the ignition temperature in fluid bed relatively low (850～
900 DEG C), so limestone desulfurizer can directly be added in bed, complete effective desulfurization in combustion.De-with tradition
Sulphur technology is compared. desulfurizing agent and SO in flue gas in fluid bed2Between reaction environment (reaction temperature, the time of staying and mass transfer etc.) ten
Divide the carrying out being conducive to desulphurization reaction.Recirculating fluidized bed is in current power industry, the first-selected type of furnace of low capacity electricity generation boiler it
One.2, AG-R type desulfurization technology, containing organic sulfur and inorganic sulfur two class in coal, but in the high-temp combustion of coal-powder boiler, inorganic sulfur
SO can be decomposed into2.Coal is in abundant combustion process, and all of flammable sulphur all can discharge, and oxidation generates SO2Enter air.
AG-2 type desulfurizing agent, it is crucial that add a certain amount of catalyst, changes physics and the chemical characteristic of tradition desulfurizing agent, significantly carries
High desulfurizing agent absorbs SO2Ability.Desulfurizing agent is stored in the desulfurizing agent warehouse being placed in zero meter of boiler. by air by desulfurization
Agent is sent in the stokehold small feed bin near boiler by spraying point. and desulfurizing agent is supplied to compressed air by batcher equably, and nozzle will
Desulfurizing agent sprays in burner hearth, is sufficiently mixed with flue gas, decomposes, is catalyzed, and with S02 effect, generate sulfate, reach the mesh of desulfurization
's.AG-R type desulphurization system has that investment is low, and floor space is little, and operating cost is few, and flexible to operation and controllability is strong
Advantage.
CN101961594A discloses a kind of desulfurizing agent, is made up of subcarbonate, silica and auxiliary agent, with desulfurizing agent
Total weight percent meter, basic carbonate salt content is 50～97%, and dioxide-containing silica is 2.5～20%, auxiliary agent content be 0.1～
30%, wherein said subcarbonate is at least one in basic copper carbonate and basic zinc carbonate, described auxiliary agent be aluminum oxide and
At least one in attapulgite.
CN 102787000A discloses a kind of fire coal boiler fume dry-desulphurizer with calorific value, and it is by living beings
After material disintegrating, be 1:(0.16～0.36 according to carbide slag and biological material mass ratio) ratio blend, granulating working procedure, system
Standby out be exclusively used in stove in mix the granular solids burning desulfurization；This desulfurizing agent density is 1.1～1.4g/cm3, particle diameter is 6
～10mm；Described biological material is straw class, crops leftovers, leaf or weeds.
But above-mentioned desulfurizing agent is when being applied to during boiler desulfurization, boiler coke still can be there is serious,
The problem that fire box temperature is the highest.
Summary of the invention
The technical problem to be solved is: conventional desulfurizing agent is when being applied to boiler fired coal additive, de-
Sulphur effect is bad, fire box temperature is the highest.
Technical scheme:
The preparation method of the desulfurizing agent of a kind of boiler fired coal, comprises the steps:
1st step, by weight, adds ANN aluminium nitrate nonahydrate 20～30 parts to 300～400 parts of water, is warming up to 90
～after 100 DEG C, drip sodium hydroxide solution, it is incubated after dropping, adds calcium oxide 20～30 parts, obtain colloidal sol mixing
Thing；
2nd step, collosol intermixture is dried, then be sintered in Muffle furnace, obtain the aluminum oxide of calcium oxide doping；
3rd step, aluminum oxide, silica 3～5 parts, iron oxide 2～4 parts that calcium oxide is adulterated, sodium nitrate 10～15
Part, zinc hydroxide 3～5 parts, calcirm-fluoride 2～4 parts, ferric trichloride 4～6 parts, magnesia 3～5 parts, iron powder 2～4 parts, aluminium powder 2～
4 parts mix, and pulverize,.
In the 1st described step, the concentration of sodium hydroxide solution is 1wt%.
In the 1st described step, temperature retention time is insulation 2～4 hours.
In the 2nd described step, drying temperature 110～120 DEG C.
In the 2nd described step, sintering temperature 700～900 DEG C.
In the 2nd described step, sintering time 3～6 hours.
In the 3rd described step, the granularity of pulverizing is 200～400 mesh.
Beneficial effect
The present invention, by with aluminum oxide as carrier, has prepared to the utmost desulfurizing agent, preferably can take off coal-fired process
The effect of sulphur, and fire box temperature can be significantly increased.
Detailed description of the invention
Embodiment 1
1st step, ANN aluminium nitrate nonahydrate 20Kg is added in 300Kg water, after being warming up to 90 DEG C, the hydroxide of dropping 1wt%
Sodium solution, is incubated 2 hours after dropping, adds calcium oxide 20Kg, obtain collosol intermixture；
2nd step, will dry under the conditions of collosol intermixture 110 DEG C, then be sintered 3 with the temperature of 700 DEG C in Muffle furnace
Hour, obtain the aluminum oxide of calcium oxide doping；
3rd step, the aluminum oxide that calcium oxide is adulterated, silica 3Kg, iron oxide 2Kg, sodium nitrate 10Kg, zinc hydroxide
3Kg, calcirm-fluoride 2Kg, ferric trichloride 4Kg, magnesia 3Kg, iron powder 2Kg, aluminium powder 2Kg mix, and are crushed to 200～400
Purpose granularity,.
Embodiment 2
1st step, ANN aluminium nitrate nonahydrate 30Kg is added in 400Kg water, after being warming up to 100 DEG C, the hydrogen-oxygen of dropping 1wt%
Change sodium solution, be incubated 4 hours after dropping, add calcium oxide 30Kg, obtain collosol intermixture；
2nd step, will dry under the conditions of collosol intermixture 120 DEG C, then be sintered 6 with the temperature of 900 DEG C in Muffle furnace
Hour, obtain the aluminum oxide of calcium oxide doping；
3rd step, the aluminum oxide that calcium oxide is adulterated, silica 5Kg, iron oxide 4Kg, sodium nitrate 15Kg, zinc hydroxide
5Kg, calcirm-fluoride 4Kg, ferric trichloride 6Kg, magnesia 5Kg, iron powder 4Kg, aluminium powder 4Kg mix, and are crushed to 200～400
Purpose granularity,.
Embodiment 3
1st step, ANN aluminium nitrate nonahydrate 25Kg is added in 350Kg water, after being warming up to 95 DEG C, the hydroxide of dropping 1wt%
Sodium solution, is incubated 3 hours after dropping, adds calcium oxide 25Kg, obtain collosol intermixture；
2nd step, will dry under the conditions of collosol intermixture 115 DEG C, then be sintered 5 with the temperature of 800 DEG C in Muffle furnace
Hour, obtain the aluminum oxide of calcium oxide doping；
3rd step, the aluminum oxide that calcium oxide is adulterated, silica 4Kg, iron oxide 3Kg, sodium nitrate 12Kg, zinc hydroxide
4Kg, calcirm-fluoride 3Kg, ferric trichloride 5Kg, magnesia 4Kg, iron powder 3Kg, aluminium powder 3Kg mix, and are crushed to 200～400
Purpose granularity,.
Reference examples 1
Difference with embodiment 3 is: calcium oxide is to add in the 3rd step.
1st step, ANN aluminium nitrate nonahydrate 25Kg is added in 350Kg water, after being warming up to 95 DEG C, the hydroxide of dropping 1wt%
Sodium solution, is incubated 3 hours after dropping, obtains colloidal sol；
2nd step, will dry under the conditions of colloidal sol 115 DEG C, then be sintered 5 hours with the temperature of 800 DEG C in Muffle furnace,
To aluminum oxide；
3rd step, the aluminum oxide that the 2nd step is obtained, calcium oxide 25Kg, silica 4Kg, iron oxide 3Kg, sodium nitrate
12Kg, zinc hydroxide 4Kg, calcirm-fluoride 3Kg, ferric trichloride 5Kg, magnesia 4Kg, iron powder 3Kg, aluminium powder 3Kg mix, and powder
It is broken to the granularity of 200～400 mesh,.
Reference examples 2
Difference with embodiment 3 is: do not add calcirm-fluoride.
1st step, ANN aluminium nitrate nonahydrate 25Kg is added in 350Kg water, after being warming up to 95 DEG C, the hydroxide of dropping 1wt%
Sodium solution, is incubated 3 hours after dropping, adds calcium oxide 25Kg, obtain collosol intermixture；
2nd step, will dry under the conditions of collosol intermixture 115 DEG C, then be sintered 5 with the temperature of 800 DEG C in Muffle furnace
Hour, obtain the aluminum oxide of calcium oxide doping；
3rd step, the aluminum oxide that calcium oxide is adulterated, silica 4Kg, iron oxide 3Kg, sodium nitrate 12Kg, zinc hydroxide
4Kg, ferric trichloride 5Kg, magnesia 4Kg, iron powder 3Kg, aluminium powder 3Kg mix, and are crushed to the granularity of 200～400 mesh, i.e.
Can.
Performance test
Fire coal is added by the desulfurizing agent using above-described embodiment and reference examples to prepare on boiler of power plant, adds
Amount is 3 kilograms of desulfurizing agents of addition in fire coal per ton.
| Sulphur concentration mg/m in flue gas3 | Furnace temperature DEG C | |
| It is not added with | 6714 | 720 |
| Embodiment 1 | 3345 | 790 |
| Embodiment 2 | 3330 | 790 |
| Embodiment 3 | 3035 | 820 |
| Reference examples 1 | 4125 | 740 |
| Reference examples 2 | 4260 | 750 |
As can be seen from the table, the desulfurizing agent that the present invention provides has preferable desulfurization and improves the effect of furnace temperature.Especially
It is that calcium oxide, for reference examples 1, is introduced during preparing aluminum hydroxide sol by embodiment, then by sintering
It is immobilized on alumina support, the effect of its desulfurization can be improved further.It addition, embodiment is fluorinated by introducing
Calcium, can improve desulfurized effect and improve fire box temperature.
Claims (7)
1. the preparation method of the desulfurizing agent of a boiler fired coal, it is characterised in that comprise the steps:
1st step, by weight, adds ANN aluminium nitrate nonahydrate 20～30 parts to 300～400 parts of water, is warming up to 90～100
After DEG C, drip sodium hydroxide solution, be incubated after dropping, add calcium oxide 20～30 parts, obtain collosol intermixture；
2nd step, collosol intermixture is dried, then be sintered in Muffle furnace, obtain the aluminum oxide of calcium oxide doping；
3rd step, aluminum oxide, silica 3～5 parts, iron oxide 2～4 parts, sodium nitrate 10～15 parts, hydrogen that calcium oxide is adulterated
Zinc oxide 3～5 parts, calcirm-fluoride 2～4 parts, ferric trichloride 4～6 parts, magnesia 3～5 parts, iron powder 2～4 parts, aluminium powder 2～4 parts are mixed
Close uniformly, and pulverize,.
The preparation method of the desulfurizing agent of boiler fired coal the most according to claim 1, it is characterised in that: the 1st described step
In, the concentration of sodium hydroxide solution is 1wt%.
The preparation method of the desulfurizing agent of boiler fired coal the most according to claim 1, it is characterised in that: the 1st described step
In, temperature retention time is insulation 2～4 hours.
The preparation method of the desulfurizing agent of boiler fired coal the most according to claim 1, it is characterised in that: the 2nd described step
In, drying temperature 110～120 DEG C.
The preparation method of the desulfurizing agent of boiler fired coal the most according to claim 1, it is characterised in that: the 2nd described step
In, sintering temperature 700～900 DEG C.
The preparation method of the desulfurizing agent of boiler fired coal the most according to claim 1, it is characterised in that: the 2nd described step
In, sintering time 3～6 hours.
The preparation method of the desulfurizing agent of boiler fired coal the most according to claim 1, it is characterised in that: the 3rd described step
In, the granularity of pulverizing is 200～400 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410829735.5A CN104479792B (en) | 2014-12-29 | 2014-12-29 | A kind of preparation method of the desulfurizing agent of boiler fired coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410829735.5A CN104479792B (en) | 2014-12-29 | 2014-12-29 | A kind of preparation method of the desulfurizing agent of boiler fired coal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104479792A CN104479792A (en) | 2015-04-01 |
| CN104479792B true CN104479792B (en) | 2016-08-24 |
Family
ID=52754403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410829735.5A Active CN104479792B (en) | 2014-12-29 | 2014-12-29 | A kind of preparation method of the desulfurizing agent of boiler fired coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104479792B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479373B (en) * | 2016-04-22 | 2021-03-05 | 辽宁基伊能源科技有限公司 | Preparation method of environment-friendly flue gas desulfurization powder |
| CN108525484A (en) * | 2016-04-22 | 2018-09-14 | 何超 | A kind of preparation process of High Efficiency Solid-State desulfurization powder |
| CN109794145A (en) * | 2017-11-16 | 2019-05-24 | 柳州市皇盛环保科技有限公司 | A kind of fume desulfurizing agent |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6250235B1 (en) * | 2000-07-26 | 2001-06-26 | Global New Energy Technology Corporation | Method and product for improved fossil fuel combustion |
| CN101186855A (en) * | 2007-11-09 | 2008-05-28 | 郑州明飞科技发展有限公司 | Special-purpose metal calcium core granular combustion-supporting desulfurization coke cleaning agent for bombardment type coal and preparation method thereof |
| CN101775325A (en) * | 2009-01-14 | 2010-07-14 | 张保森 | Coal composite sulfur fixing agent |
| CN101899353A (en) * | 2010-08-31 | 2010-12-01 | 重庆南桐矿业有限责任公司南桐选煤厂 | High-temperature fixed sulfur additive and preparation method thereof |
| CN102899123A (en) * | 2012-09-25 | 2013-01-30 | 薛华 | High-efficiency desulfurizer for fuel coal |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04288399A (en) * | 1991-03-18 | 1992-10-13 | Matsushita Electric Ind Co Ltd | Solid fuel |
-
2014
- 2014-12-29 CN CN201410829735.5A patent/CN104479792B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6250235B1 (en) * | 2000-07-26 | 2001-06-26 | Global New Energy Technology Corporation | Method and product for improved fossil fuel combustion |
| CN101186855A (en) * | 2007-11-09 | 2008-05-28 | 郑州明飞科技发展有限公司 | Special-purpose metal calcium core granular combustion-supporting desulfurization coke cleaning agent for bombardment type coal and preparation method thereof |
| CN101775325A (en) * | 2009-01-14 | 2010-07-14 | 张保森 | Coal composite sulfur fixing agent |
| CN101899353A (en) * | 2010-08-31 | 2010-12-01 | 重庆南桐矿业有限责任公司南桐选煤厂 | High-temperature fixed sulfur additive and preparation method thereof |
| CN102899123A (en) * | 2012-09-25 | 2013-01-30 | 薛华 | High-efficiency desulfurizer for fuel coal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104479792A (en) | 2015-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101791561B (en) | Desulphurization and denitration catalyst and preparation method thereof | |
| CN102311834B (en) | Fire coal sulfur fixation, smoke abatement and denitration agent | |
| CN105056758B (en) | A kind of fluid catalytic removes the method and device of nitrogen oxides | |
| CN104479792B (en) | A kind of preparation method of the desulfurizing agent of boiler fired coal | |
| CN107138132A (en) | Prepare the method that semicoke loads polynary nanometer metal oxide desulphurization denitration adsorbent | |
| CN110813070A (en) | Carbide slag modifier for desulfurization of circulating fluidized bed boiler, modified carbide slag and preparation method thereof | |
| CN110170239A (en) | A kind of system and method for realizing green denitration using dry technology for production | |
| CN102658023A (en) | Carbon dioxide solid absorbent capable of effectively inhibiting active components from losing effect | |
| CN101177631A (en) | Ferrocerium oxide high-temperature coal gas desulfurization agent and preparation | |
| CN102533387A (en) | Fire coal desulfurization and denitrification decoking additive and preparation process thereof | |
| CN105126563B (en) | The desulphurization denitration medium and desulphurization denitration apparatus and method of a kind of flue gas of glass melting furnace | |
| CN101301607A (en) | High-efficiency energy-saving combustion supporting catalyst | |
| CN103433055B (en) | Preparation method of deoxidization catalyst and method for deoxidization by use of deoxidization catalyst | |
| CN108217606A (en) | Utilize the cross-flow moving bed device of carbon-based material reduction and desulfurization resolution gas Recovered sulphur | |
| CN102671517A (en) | Device for performing urea pyrolysis by utilizing smoke thermal enthalpy | |
| CN104388145B (en) | High-efficiency environment-friendly synergistic agent for coal | |
| CN103215440B (en) | Desulfuration roasting method of vanadium-extraction stone coal | |
| CN114891549A (en) | Desulfurizing agent and preparation method and application thereof | |
| CN103131513A (en) | Thermal power plant fire coal combustion supporting and sulfur fixation composition method | |
| CN103727803A (en) | Flue gas denitrification device | |
| CN103131519A (en) | Boiler fire coal sulfur fixation composition method | |
| CN109609241B (en) | Coal-fired cleaning additive and preparation method thereof | |
| CN202733883U (en) | Circulating fluidized bed boiler | |
| CN102643705A (en) | Coal combustion-supporting hydrogel as well as preparation method and application thereof | |
| CN103031174B (en) | Liquid state coal-saving additive |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Duan Zhongda Inventor before: Li Kang |
|
| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160414 Address after: 312365 Zhejiang province Shaoxing Sanyou Village Bridge Songxia town Shangyu District North No. 90 Applicant after: Duan Zhongda Address before: Tongxing road Wenjiang District of Chengdu City, Sichuan province 610000 No. 88 Regent Hong Kong 19 Building No. 1702 Applicant before: Li Kang |
|
| CB03 | Change of inventor or designer information |
Inventor after: Duan Zhongda Inventor after: Liu Junli Inventor after: Na Qiang Inventor before: Duan Zhongda |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170113 Address after: 102611 Beijing City Economic Development Zone Daxing District Guangmao Street No. 12 Patentee after: BEIJING SHENGCHANG LYUNENG TECHNOLOGY CO.,LTD. Address before: 312365 Zhejiang province Shaoxing Sanyou Village Bridge Songxia town Shangyu District North No. 90 Patentee before: Duan Zhongda |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230522 Address after: 101408 No. 308, Huaibei Road, Huaibei Town, Huairou District, Beijing (cluster registration) Patentee after: Longji Energy Group Co.,Ltd. Address before: 102611 No.12 Guangmao street, economic development zone, Daxing District, Beijing Patentee before: BEIJING SHENGCHANG LYUNENG TECHNOLOGY CO.,LTD. |