CN1232620C - Catalytic coal desulfurizer and preparing method thereof - Google Patents
Catalytic coal desulfurizer and preparing method thereof Download PDFInfo
- Publication number
- CN1232620C CN1232620C CN 200410027410 CN200410027410A CN1232620C CN 1232620 C CN1232620 C CN 1232620C CN 200410027410 CN200410027410 CN 200410027410 CN 200410027410 A CN200410027410 A CN 200410027410A CN 1232620 C CN1232620 C CN 1232620C
- Authority
- CN
- China
- Prior art keywords
- coal
- weight percentage
- agent
- desulfurization agent
- powder
- 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.)
- Expired - Fee Related
Links
Landscapes
- Treating Waste Gases (AREA)
Abstract
The present invention provides a catalytic desulfurization agent for coal, which is composed of 70 to 75 wt% of limestone, 10 to 20 wt% of coal powder for power plants and 10 to 15 wt% of iron powder. The present invention also provides a preparation method of the catalytic desulfurization agent for coal, which comprises that according to the weight percentages, the limestone, the coal powder for power plants and the iron powder are put in a vertical mill for mixing; after the mixture is ground into a powdery material with 325 to 400 meshes and is statically placed for at least 12 hours, the catalytic desulfurization agent is obtained. Industrial waste is used as adjuvant agents so that the waste is recycled as available substances, the present invention has the advantages of simple preparation process, low cost, high efficiency, easy obtainment of raw materials due to the fact that Fe2O3 (ferric oxide) is used as a main catalyst and greatly reduced cost of the catalytic desulfurization agent due to the fact that the coal powder for power plants is added to a primary agent, and experiments indicate that the desulfurization rate of the catalytic desulfurization agent reaches more than 80%. The catalytic desulfurization agent of the present invention is suitable for various furnaces, such as coal powder furnaces, traveling grate furnaces, fluidized furnaces, etc.
Description
Technical field
The present invention relates to a kind of catalytic type coal desulfurize agent and preparation method thereof, be used for reducing coal-fired process SO
2Discharging, the protection environment, belong to coal desulfurization adding technique field.
Background technology
Because the SO in the coal-fired waste gas that produces
2Atmospheric environment has been caused serious pollution.The measure and the method for various desulfurization are arisen at the historic moment, as the patent No. is ZL01114874.8, Granted publication number is the Chinese patent " a kind of efficient fuel coal sulfur stabilizing agent and its production and use " of CN1117140C, it has announced such technical scheme: a kind of efficient fuel coal sulfur stabilizing agent, it is characterized in that: form by host and auxiliary agent, host is that natural limestone, its weight percentage are 85-99%, and auxiliary agent is an industrial soda, and its weight percentage is 1-15%.It has also announced a kind of preparation method of efficient fuel coal sulfur stabilizing agent, it is characterized in that: 1. adopt the natural limestone mineral to make host through pulverizing; 2. choose and select industrial soda and make the auxiliary agent powder; 3. with aforementioned auxiliary agent powder 1.5-15% and host mixed grinding and make efficient fuel coal sulfur stabilizing agent by weight percentage.Though this invention can reduce prior art sulphur-fixing agent cost and sweetening effectiveness increases, the auxiliary agent of sulphur-fixing agent adopts industrial soda, and its cost still is higher, desulfurization degree less than 70%, and its desulfurization degree still is on the low side, can not satisfy the relevant environmental protection standard requirement of country.In-furnace calcium spraying+stove exit gas humidification activation sulfur removal technology that China introduces from Finland, the sweetening agent that sprays in the stove is CaCO
3, behind stove exit gas humidification activation, its total desulfuration efficiency only reaches 75%, and is on the low side relatively, still can not satisfy the relevant environmental protection standard of country.
Summary of the invention
At the shortcoming of prior art, technical problem to be solved by this invention provides a kind of with low cost, and the desulfuration efficiency height reaches catalytic type coal desulfurize agent of environmental protection standard and preparation method thereof.
The present invention solves the technical scheme that its technical problem adopts: a kind of catalytic type coal desulfurize agent, form by Wingdale, fly ash in electric power plant, iron powder, the Wingdale weight percentage is 70-75%, and the weight percentage of fly ash in electric power plant is 10-20%, and the weight percentage of iron powder is 10-15%.
Above-mentioned Wingdale is meant and contains CaCO
3Weight percentage be 90%-98% natural limestone, as host.
Above-mentioned fly ash in electric power plant is meant the collected dry powder coal ash of coal-burning power plant's fly-ash separator, as auxiliary agent.
Above-mentioned iron powder is meant collected iron powder of smelting iron and steel stove fly-ash separator or the iron powder of producing specially, its Fe
2O
3Weight percentage be 80-85%, have katalysis during desulfurization.
A kind of preparation method of catalytic type coal desulfurize agent, Wingdale, fly ash in electric power plant, the mixing of iron powder adding Vertical Mill with described weight percentage grind to form 325-400 purpose powder material, leave standstill at least 12 hours, promptly get sweetening agent.
Beneficial effect of the present invention:
1. be auxiliary agent with the industrial waste, the treatment of wastes with processes of wastes against one another is turned waste into wealth, and cost is low, the efficient height.
2. catalytic specie is mainly Fe
2O
3(ferric oxide), raw material is easy to get.
3. add fly ash in electric power plant in the host, can reduce the sweetening agent cost significantly, realize utilization of waste material.
4. the desulfurization degree through testing this sweetening agent reaches more than 80%.
5. sweetening agent of the present invention is applicable to the multiple type of furnaces such as coal-powder boiler, chain furnace, fluidizing furnace
6. preparation technology of the present invention is simple.
Describe the present invention below in conjunction with embodiment.
Embodiment
Embodiment 1
Get the CaCO3 weight percentage and be 98% natural limestone 750kg, the collected dry powder coal ash of ShiShimonoseki, Nanjing plant dust catcher 150kg, Fe
2O
3Weight percentage be 85% iron powder 100kg, mix, grind to form 400 order pulverulent materials with Vertical Mill, left standstill 12 hours, make sweetening agent, standby;
Add water furnishing pulpous state in the sweetening agent, with the sulfur-bearing weight percentage be that 3.54% bunker coal mixes, standby:
The fire coal that does not add sweetening agent on 2 tons/hour steam boiler compares experiment with the fire coal that adds above-mentioned sweetening agent:
When the fired coal combustion that does not add sweetening agent, the stove tail of fume emission were not installed any desulfurizer, recording the discharging so2 concentration in flue gas was 2643.677mg/Nm
3
The adding weight percentage is this sweetening agent of 12% in fire coal, and the stove tail adds the flue gas cao activation reactor, and after putting into operation, recording the discharging so2 concentration in flue gas is 426.625mg/Nm
3Its desulfuration efficiency is 83.86%.
The adding weight percentage is this sweetening agent of 10% in fire coal, and the stove tail adds flue gas circulating fluidized bed desulfur device, and after putting into operation, recording the discharging so2 concentration in flue gas is 239.988mg/Nm
3Its desulfuration efficiency is 90.92%.
Embodiment 2
Get the CaCO3 weight percentage and be 95% natural limestone 720kg, the collected dry powder coal ash of plant dust catcher 130kg, Fe
2O
3Weight percentage is 80% iron powder 150kg, mixes, and grinds to form 400 order pulverulent materials with Vertical Mill, leaves standstill 13 hours, makes sweetening agent.
Press the experiment of embodiment 1 method, the adding weight percentage is this sweetening agent of 12% in fire coal, and the stove tail adds the flue gas cao activation reactor, and its desulfuration efficiency is 82.96%; The adding weight percentage is this sweetening agent of 10% in fire coal, and the stove tail adds flue gas circulating fluidized bed desulfur device, and its desulfuration efficiency is 89.93%.
Embodiment 3
Get the CaCO3 weight percentage and be 90% natural limestone 700kg, the collected dry powder coal ash of plant dust catcher 170kg, Fe
2O
3Weight percentage is 82% iron powder 130kg, mixes, and grinds to form 325 order pulverulent materials with Vertical Mill, leaves standstill 12 hours, makes sweetening agent.
Press the experiment of embodiment 1 method, the adding weight percentage is this sweetening agent of 12% in fire coal, and the stove tail adds the flue gas cao activation reactor, and its desulfuration efficiency is 81.88%; The adding weight percentage is this sweetening agent of 10% in fire coal, and the stove tail adds flue gas circulating fluidized bed desulfur device, and its desulfuration efficiency is 88.87%.
Embodiment 4
Get the CaCO3 weight percentage and be 96% natural limestone 740kg, the collected dry powder coal ash of plant dust catcher 140kg, Fe
2O
3Weight percentage is 83% iron powder 120kg, mixes, and grinds to form 350 order pulverulent materials with Vertical Mill, leaves standstill 12 hours, makes sweetening agent.
Press the experiment of embodiment 1 method, the adding weight percentage is this sweetening agent of 12% in fire coal, and the stove tail adds the flue gas cao activation reactor, and its desulfuration efficiency is 83.06%; The adding weight percentage is this sweetening agent of 10% in fire coal, and the stove tail adds flue gas circulating fluidized bed desulfur device, and its desulfuration efficiency is 90.05%.
Embodiment 5
Get the CaCO3 weight percentage and be 91% natural limestone 700kg, the collected dry powder coal ash of plant dust catcher 200kg, Fe
2O
3Weight percentage is 85% iron powder 100kg, mixes, and grinds to form 400 order pulverulent materials with Vertical Mill, leaves standstill 12 hours, makes sweetening agent.
Press the experiment of embodiment 1 method, the adding weight percentage is this sweetening agent of 12% in fire coal, and the stove tail adds the flue gas cao activation reactor, and its desulfuration efficiency is 81.55%; The adding weight percentage is this sweetening agent of 10% in fire coal, and the stove tail adds flue gas circulating fluidized bed desulfur device, and its desulfuration efficiency is 87.98%.
Claims (3)
1. catalytic type coal desulfurize agent, it is characterized in that: be made up of Wingdale, fly ash in electric power plant, iron powder, the Wingdale weight percentage is 70-75%, and the weight percentage of fly ash in electric power plant is 10-20%, and the weight percentage of iron powder is 10-15%;
Described Wingdale contains CaCO
3Weight percentage is 90%-98%;
Described iron powder contains Fe
2O
3Weight percentage be 80-85%.
2. catalytic type coal desulfurize agent according to claim 1 is characterized in that: described fly ash in electric power plant is meant the collected dry powder coal ash of coal-burning power plant's fly-ash separator.
3. according to the preparation method of each described catalytic type coal desulfurize agent in claim 1 or 2, it is characterized in that: Wingdale, fly ash in electric power plant, the iron powder of described weight percentage are added Vertical Mill and mix, grind to form 325-400 purpose powder material, left standstill at least 12 hours, and promptly got sweetening agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410027410 CN1232620C (en) | 2004-06-02 | 2004-06-02 | Catalytic coal desulfurizer and preparing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410027410 CN1232620C (en) | 2004-06-02 | 2004-06-02 | Catalytic coal desulfurizer and preparing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1583984A CN1583984A (en) | 2005-02-23 |
| CN1232620C true CN1232620C (en) | 2005-12-21 |
Family
ID=34601332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410027410 Expired - Fee Related CN1232620C (en) | 2004-06-02 | 2004-06-02 | Catalytic coal desulfurizer and preparing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1232620C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327939C (en) * | 2005-05-09 | 2007-07-25 | 刘汉东 | High-efficient catalyzing smoke desulfurizing and denitrifying method and apparatus thereof |
| CN100363474C (en) * | 2006-02-16 | 2008-01-23 | 上海交通大学 | Method of removing organic sulfur in coal by alkali catalytic low temperature air oxidation |
| CN100450584C (en) * | 2006-12-22 | 2009-01-14 | 清华大学 | Preparation method of desulfurizer powder by quick hydration reaction and device thereof |
| CN101235324B (en) * | 2007-11-13 | 2011-06-08 | 沈阳航空工业学院 | High-temperature coal gas desulfurizer using coal ash as carrier |
| CN102489131A (en) * | 2011-11-21 | 2012-06-13 | 广东电网公司电力科学研究院 | Preparation method of wet desulphurization absorbent for flue gas from coal fired boiler |
| CN103331164A (en) * | 2013-07-24 | 2013-10-02 | 武汉科技大学 | Iron-based catalyst for sintering flue gas NH3-SCR (Selective Catalytic Reduction) denitration and preparation method thereof |
| CN105664706A (en) * | 2016-01-19 | 2016-06-15 | 北京三聚环保新材料股份有限公司 | High-sulfur-capacity low-cost desulfurizing agent and preparation method thereof |
| CN105597516B (en) * | 2016-02-29 | 2020-01-10 | 北京三聚环保新材料股份有限公司 | Magnetic iron oxide desulfurizer and preparation method thereof |
| CN107158942A (en) * | 2017-06-30 | 2017-09-15 | 合肥天翔环境工程有限公司 | A kind of sintering furnace flue-gas dust-removing and desulfurization system |
-
2004
- 2004-06-02 CN CN 200410027410 patent/CN1232620C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1583984A (en) | 2005-02-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4555392A (en) | Portland cement for SO2 control in coal-fired power plants | |
| US7276217B2 (en) | Reduction of coal-fired combustion emissions | |
| EP0395707B1 (en) | Method and composition for decreasing emissions of sulfur oxides and nitrogen oxides | |
| CN101532782B (en) | Sintering gas purifying and waste heat recovering technique | |
| CN111465587A (en) | Method for simultaneously cleaning waste gas and manufacturing supplementary cementing material | |
| CN110721571A (en) | Dry desulfurizing agent for cement production and preparation method thereof | |
| CN101220312A (en) | Combustion improver for catalytic combustion of blast furnace coal injection | |
| CN1232620C (en) | Catalytic coal desulfurizer and preparing method thereof | |
| CN101269339B (en) | High-efficiency fuel coal catalyst | |
| CN1559939A (en) | Process for treating sludge of sewage treatment plant by circulating fluidizing burning method | |
| CN101074402A (en) | Efficient sulfur-fixing agent and its usage | |
| KR20140092699A (en) | Sludge solidified agent and menufacturing method of artificial soil usign the same | |
| JP4625265B2 (en) | Method for removing sulfur in fluidized bed apparatus and desulfurizing agent | |
| WO2014080373A2 (en) | Method for controlling the emission of polluting substances in a gaseous effluent produced by a combustion process | |
| Tarelho et al. | Characteristics, management and applications of ashes from thermochemical conversion of biomass to energy | |
| CN1558143A (en) | Method for dealing with discharge liquid from paper, leather and dye printing industry using circulating fluidized combustion method | |
| CN1248483A (en) | Flue gas desulfurizing agent and method | |
| CN108602014B (en) | Enzymatic treatment of coal for mercury remediation | |
| JP3384435B2 (en) | Fluidized bed furnace exhaust gas desulfurization method | |
| WO2015144187A1 (en) | Method for removal of mercury from flue gases | |
| CN1556349A (en) | Domestic garbage treatment and cement rotary kiln combined production technology | |
| CN1332000C (en) | Desulfate agent for fuel coal and preparation process thereof | |
| JP2021155271A (en) | Manufacturing method of cement | |
| KR20010017819A (en) | Ca-based absorbent for acid gas treatment and method for preparing the same | |
| CN1575847A (en) | Material circulation activating flue gas desulfurization method and apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051221 Termination date: 20100602 |