CN101899353A - High-temperature fixed sulfur additive and preparation method thereof - Google Patents
High-temperature fixed sulfur additive and preparation method thereof Download PDFInfo
- Publication number
- CN101899353A CN101899353A CN2010102678548A CN201010267854A CN101899353A CN 101899353 A CN101899353 A CN 101899353A CN 2010102678548 A CN2010102678548 A CN 2010102678548A CN 201010267854 A CN201010267854 A CN 201010267854A CN 101899353 A CN101899353 A CN 101899353A
- Authority
- CN
- China
- Prior art keywords
- temperature
- content
- additive
- sulfur
- temperature fixed
- 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.)
- Granted
Links
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention relates to a high-temperature fixed sulfur additive. The additive comprises the following components in percentage by weight: 2.90 to 3.50 percent of Fe, 25.0 to 30.00 percent of SiO2, 10.90 to 13.00 percent of Al2O3, 52.00 to 55.00 percent of CaO and 1.50 to 3.00 percent of MgO. A high-temperature sulfur fixing agent is prepared by mixing the high-temperature fixed sulfur additive and a limestone sulfur fixing agent or a quicklime sulfur fixing agent in a mass ratio of 1:2.5-3.5. The high-temperature fixed sulfur additive has the advantages of reliable raw material source, capability of meeting the requirement by obtaining materials from local sources since areas producing and using the high-temperature sulfur fixing additive are generally rich in coal and associated resources, low cost, simple production process, convenient industrial production, low production cost, no toxicity, no metallic corrosion, no effect on safe running of a boiler, small particle size, full contact with coal, sulfur fixing rate of up to 70 percent (combustion temperature is 1,700 DEG C) when used on a chain boiler and no change in combustion characteristic and sulfur fixing effect after being piled in the open air for half a month.
Description
Technical field
The present invention relates to a kind of additive for sulfur capture and preparation method thereof, particularly a kind of high-temperature fixed sulfur additive and preparation method thereof.
Background technology
China's steam coal average sulfur is divided into 1.15%, wherein with the southwest for the highest, average full sulphur reaches 2.43%, and high sulphur coal (full sulphur is greater than 3.00%) has accounted for 43.61% of resource, medium-high sulfur coal (full sulphur 2.00-3.00%) also accounts for 17.40%, both sums surpass 60%, directly use high sulphur coal in a large number, and industrial and agricultural production and the ecotope to the southwest caused very big influence.
In recent years, for controlling coal-fired SO
2Quantity discharged, the mechanism research from desulfurization, solid sulphur to practical application, has all obtained many achievements, but has really formed lacking of scale production, and most important reason is exactly to fail to solve the problem of high-temperature fixed sulfur; The steam coal burning in the time of 400-600 ℃, is the remarkable release stage of sulphur, and the sulphur release rate reaches 83%; In the time of 600-1150 ℃, be the slowly release stage, there is 16% sulphur to discharge approximately in this temperature range, unslaked lime generates Ca(OH as sulphur-fixing agent in moulded coal)
2, Ca(OH)
2Character is very active, at low temperatures just with SO
2, SO
3React, generate calcium sulfate and calcium sulfite; In high-temperature burner hearth,, generate SO as temperature reversible reaction that following reaction calcium sulfate and calcium sulfite can also take place above 1000 ℃
2And SO
3Gaseous emission.In order to solve the too much problem of sulphur emissions, some production units adopt dressing of coal by washing to reduce its sulphur content content steam coal, but can only be reduced to about 2.5% through the sulphur content content of the steam coal of this method.Currently available products is the needs in incompatibility market more and more, for developing new product, some units have have also researched and developed high-temperature fixed sulfur additive, but in the real application research process, find its captured sulfur result unsatisfactory (its highest sulfur-fixing rate can only reach 47%), SO in the boiler smoke
2Concentration does not reach environmental requirement (minimum 1341mg/nm
3, be up to 1845 mg/nm
3).Both at home and abroad high-temperature fixed sulfur additive has been done to explore widely at present, but mostly only certain effect has been arranged in the laboratory, the suitability for industrialized production effect is bad, and the source of high-temperature fixed sulfur additive is few, complex manufacturing, and cost is up to more than 1000 yuan/ton.
Summary of the invention
The object of the present invention is to provide a kind of high-temperature fixed sulfur additive, it is applied in the high-temperature desulfurization agent, can significantly improve captured sulfur result.
Another object of the present invention is to provide the preparation method of above-mentioned high-temperature fixed sulfur additive, this preparation method is simple, be convenient to industrialization promotion.
Another purpose of the present invention is to provide a kind of high-temperature desulfurization agent, and its captured sulfur result is good.
A further object of the present invention is to provide the preparation method of above-mentioned high-temperature desulfurization agent.
The object of the present invention is achieved like this (below the percentage ratio that relates to, not specify, all in mass percent):
A kind of high-temperature fixed sulfur additive is characterized in that: described high-temperature fixed sulfur additive mainly contains following composition:
| Composition | Fe? | SiO 2 | Al 2O 3 | CaO | MgO |
| % | 2.90～3.50 | 25.00～30.00 | 10.90～13.00 | 52.00～55.00 | 1.50～3.00 |
Mentioned component iron is from iron-bearing material, and purity is the bigger the better, but big its cost of purity is very high, makes full use of resource in order to reduce cost, and described composition iron is preferably from industrial acid sludge raw material; Above-mentioned silica composition is from the raw material that contains silicon-dioxide, preferably pure silicon-dioxide, but make full use of resource in order to reduce cost, described silica composition is preferably from sandstone; Above-mentioned alumina composition is from the raw material that contains aluminum oxide, preferably pure aluminum oxide, but make full use of resource in order to reduce cost, described alumina composition is preferably from plant slag or flyash; Above-mentioned calcium oxide and magnesium oxide composition be from containing calcium oxide and magnesian raw material, preferably pure calcium oxide and magnesium oxide material, but make full use of resource in order to reduce cost, described calcium oxide and magnesium oxide composition are preferably from coal gangue.
Further, above-mentioned high-temperature desulfurization agent mainly contains following composition:
| Composition | Fe? | SiO 2 | P | S | Al 2O 3 | CaO | MgO |
| % | 2.91 | 25.66 | 0.046 | 1.263 | 10.9 | 52.21 | 1.52 |
| Composition | TiO 2 | K 2O | Na 2O | Cu | Zn | Pb | ? |
| % | 0.74 | 0.715 | 0.053 | 0.042 | 0.041 | 0.01 | ? |
A kind of preparation method of high-temperature fixed sulfur additive is characterized in that: the mixture with the coal gangue of significant quantity, industrial acid sludge, power station slag or flyash and sandstone makes through high temperature sintering; 1400 ℃～1500 ℃ of the temperature of described high temperature sintering, described calcination time 1.5～3 hours.
In the mixture of above-mentioned preparation high-temperature fixed sulfur additive, coal gangue accounts for 60-75%, and industrial acid sludge accounts for 5-8%, and power station slag or flyash account for 15-30%, and sandstone accounts for 5-8%.
Better in order to make that high-temperature fixed sulfur additive is used for the captured sulfur result of sulphur-fixing agent, the main component CaCO of above-mentioned coal gangue
3, MgCO
3, CaO content 40%～50%, MgO content 2.0%～5.0%, by weight percentage.
Above-mentioned industrial acid sludge is vitriol works's acid sludge, main component Fe
2O
3, Fe wherein
2O
3Content 40%～50%, by weight percentage.
Above-mentioned power station slag or flyash, wherein Al
2O
3Content 20～30%, specific activity 70%～75%.
Above-mentioned sandstone, its main component SiO
2Content 80%～90%.
Specifically, a kind of preparation method of high-temperature fixed sulfur additive is CaCO with main component
3, MgCO
3, CaO content 40%～50%, the coal gangue of MgO content 2.0%～5%, Fe
2O
3Vitriol works's acid sludge of content 40%～50%, and Al
2O
3Content 20～30%, the power station slag of specific activity 70%～75%, and main component SiO
2The sandstone of content 80%～90% with the mass ratio be the ratio of 65:6:22:7 mix join after, calcination is 3 hours under the high temperature of 1400 ℃ of temperature, carries out ore grinding, sieve classification again, makes high-temperature fixed sulfur additive.
A kind of high-temperature desulfurization agent is to be 1:2.5-3.5 with above-mentioned high-temperature fixed sulfur additive and sulphur-fixing agent according to mass ratio, and the mixed that is preferably 1:3 makes.
Above-mentioned sulphur-fixing agent is Wingdale sulphur-fixing agent or unslaked lime sulphur-fixing agent, is preferably the unslaked lime sulphur-fixing agent of CaO content 85%～95%.
A kind of preparation method of high-temperature desulfurization agent, at first the unslaked lime sulphur-fixing agent with above-mentioned high-temperature fixed sulfur additive and CaO content 85%～95% is that 1:3 stirs according to mass ratio, adding mass concentration is the industrial NaCL salts solution of 5%-8%, in 20-30 ℃ of air, dehydrated 2-4 hour, make high-temperature desulfurization agent.
The present invention has following beneficial effect:
1. each raw material sources of high-temperature fixed sulfur additive of the present invention are reliable, generally all have abundant coal and associated resources because of production utilizes the area of this high-temperature fixed sulfur additive, and gathering materials on the spot just can meet the demands, cheap; Simultaneously the production technique of high-temperature fixed sulfur additive of the present invention simple, be convenient to suitability for industrialized production, production cost is low.
2. high-temperature fixed sulfur agent addition agent of the present invention cooperates with traditional sulphur-fixing agent, and its captured sulfur result is good, and sulfur-fixing rate can reach 70%, and can make sulphur content after the dressing of coal by washing is 2.5% steam coal, realizes solid sulphur, qualified discharge on chain-grate boiler or coal-powder boiler during burning.
3. nontoxic, the no metallic corrosion of high-temperature desulfurization agent of the present invention does not have influence to safe operation of the boiler, and particle diameter is little, realized fully contacting with coal; On chain-grate boiler, use sulfur-fixing rate to reach 1200 ℃ of 70%(temperature of combustion); After storing up two weeks in the open, combustioncharacteristics is constant, and captured sulfur result is constant.
4. use high-temperature desulfurization agent of the present invention to reduce SO
2Pollute, set up 500,000 tons of/year high-sulfur steam coals that form with the dried embankment washing mill at contriver place and use high-temperature desulfurization agent product of the present invention to be calculating, can reduce discharging SO every year
2Ten thousand tons 1.75 (ten thousand tons/year of 500,000 tons * 2.5% * 70% * 2=1.75), high-temperature desulfurization agent of the present invention has been made bigger contribution in the energy-saving and emission-reduction in this field.
Embodiment
Below by embodiment the present invention is further specifically described.Be necessary to be pointed out that at this following examples only are used for the present invention is further specified; can not be interpreted as limiting the scope of the invention, the person skilled in art can make some nonessential improvement and adjustment to the present invention according to the invention described above content.
Embodiment 1
A kind of preparation method of high-temperature fixed sulfur additive is CaCO with main component
3, MgCO
3, CaO content 40%～50%, the coal gangue of MgO content 2.0%～5.0%, with main component be Fe
2O
3, Fe
2O
3Vitriol works's acid sludge of content 40%～50% and main component are Al
2O
3, Al
2O
3Content 20～30%, the power station slag of specific activity 70%～75%, and main component is SiO
2, SiO
2(mixing adapted amount ratio was 70:8:15:7 after the sandstone of content 80%～90% was mixed and joined, in weight ratio), calcination is 1.5 hours under the high temperature of 1400 ℃ of temperature, carry out ore grinding, sieve classification again, particle diameter is qualified product less than the screen underflow of 0.1mm, particle diameter continues to return ore grinding greater than the screen overflow of 0.1mm, and adds 10% power plant fly ash, finally makes the high-temperature fixed sulfur additive of particle diameter≤0.1mm.
Embodiment 2
A kind of preparation method of high-temperature fixed sulfur additive is CaCO with main component
3, MgCO
3, CaO content 40%～50%, the coal gangue of MgO content 2.0%～5.0%, with main component be Fe
2O
3, Fe
2O
3Vitriol works's acid sludge of content 40%～50% and main component are Al
2O
3, Al
2O
3Content 20～30%, the power station slag of specific activity 70%～75%, and main component is SiO
2, SiO
2The sandstone of content 80%～90% is mixed and is joined back (mixing adapted amount ratio is 65:6:22:7, in weight ratio), and calcination is 3 hours under the high temperature of 1500 ℃ of temperature, carries out ore grinding, sieve classification again, makes high-temperature fixed sulfur additive.
Embodiment 3
A kind of high-temperature desulfurization agent is that the high-temperature fixed sulfur additive that at first embodiment 1 made and CaO content are that 85% unslaked lime sulphur-fixing agent is that 1:3 stirs according to mass ratio, the adding mass concentration is 6% industrial NaCL salts solution, in 23 ℃ of air, dehydrated 3 hours, make high-temperature desulfurization agent.
Embodiment 4
A kind of high-temperature desulfurization agent is that the high-temperature fixed sulfur additive that at first embodiment 2 made and CaO content are that 90% unslaked lime sulphur-fixing agent is that 1:2.5 stirs according to mass ratio, the adding mass concentration is 8% industrial NaCL salts solution, in 26 ℃ of air, dehydrated 2 hours, make high-temperature desulfurization agent.
Embodiment 5
A kind of preparation method of high-temperature fixed sulfur additive is CaCO with main component
3, MgCO
3, CaO content 40%～50%, the coal gangue of MgO content 2.0%～5.0%, with main component be Fe
2O
3, Fe
2O
3Vitriol works's acid sludge of content 40%～50% and main component are Al
2O
3, Al
2O
3Content 20～30%, the flyash of specific activity 70%～75%, and main component is SiO
2, SiO
2The sandstone of content 80%～90% is mixed and is joined back (mixing adapted amount ratio is 60:5:30:5, in weight ratio), and calcination is 2 hours under the high temperature of 1450 ℃ of temperature, carries out ore grinding, sieve classification again, makes high-temperature fixed sulfur additive.Be that 88% unslaked lime sulphur-fixing agent is that 1:3.5 stirs according to mass ratio again with the high-temperature fixed sulfur additive that makes and CaO content, add mass concentration and be 5% industrial NaCL salts solution, in 21 ℃ of air, dehydrated 4 hours, make high-temperature desulfurization agent.
One, the high-temperature desulfurization agent that uses embodiment 3 to make is tested the captured sulfur result of different coal combustion:
1, testing sequence:
1. 1 5t/h chain furnace with power plant for self-supply changes sulphur coal clean moulding combustion test stove into;
2. get non-smelting cleaned coal produce in 250 tons of the cleaned coal of particle diameter≤13mm, wherein, 60 tons in cleaned coal 1# sample, 60 tons in cleaned coal 2# sample, 60 tons in preparation moulded coal 1# sample, 60 tons in preparation moulded coal 2# sample; Get 120 tons of mixed coals, wherein mixed coal 3# sample is 60 tons, preparation moulded coal 3# sample (15-20%) 60 tons; Cleaned coal 1# and cleaned coal 2# be non-smelting cleaned coal produce in≤cleaned coal of 13mm, cleaned coal 1# is the same with cleaned coal 2# composition, has just done two batches test it is numbered; Moulded coal 1# and moulded coal 2# are the coals that has added in cleaned coal 1# and cleaned coal 2# respectively in the high-temperature desulfurization agent of the present invention of the 15-20% of mass percent; Mixed coal 3# is the raw coal of particle diameter≤13mm, and moulded coal 3# is the coal that adds in mixed coal 3# in the high-temperature desulfurization agent of the present invention of the 15-20% of mass percent.
3. 2 5t/h chain furnaces are selected in boiler combustion, and wherein, 1 is common high sulfur coal combustion test furnace, loose and burn cleaned coal 1# and 2# and mixed coal 3#; 1 is sulphur coal clean moulding combustion test stove, moulding briquet 1#, 2#, 3#; At every pair of test coal sample,, take identical operating mode operation by 2 firemans;
4. thermal technology and environmental protection test are tested under nominal situation.
2, test-results: see Table 1.
The captured sulfur result test of the different coal combustion of table 1
From result of industrial test as can be seen, three tests, the SO of moulded coal 1#, 2#, 3#
2Starting point concentration all＜1200mg/nm
3, sulfur-fixing rate all reaches more than 70%, illustrates that sulphur-fixing agent of the present invention has obviously captured sulfur result reliably.
Two, high-temperature fixed sulfur additive selectivity test
The contriver has also done the selectivity test to 6 kinds of additives, and has done the solid sulfur test under the differing temps, test-results such as table 2 to wherein several preferably:
1. the solid sulfur test under synthermal (1150 ℃), same calcium sulfur ratio (2:1), same addition (1.0%) condition.
Table 2 equality of temperature is with the sulfur-fixing rate of calcium than following different additive
As can be seen from Table 2, except that the 1# additive, add 2#-its sulfur-fixing rate of 6# additive and all improve, wherein add additive for sulfur capture most pronounced effects of the present invention, rise to 16.82%.Annotate: Ai Shika is a general commercial goods chemical reagent.
2. the different additive amount is to the influence of sulfur-fixing rate
Equality of temperature (1150 ℃) with the condition of calcium than (2:1) under, investigate the influence of 3#, 4#, 6# additive dosage respectively, its test-results such as table 3 to sulfur-fixing rate:
The different additions of table 3 are to the influence of sulfur-fixing rate
As seen from the table, the optimum addn amount of 3#, 4#, 6# is respectively 0.7%, 0.7%, 1.0%, 3.5%.
3. the captured sulfur result of additive under differing temps
Under each additive optimum addn amount, 3#, 4#, 6# to have been done respectively from 900-1300 ℃ of solid sulfur tests, test-results sees Table 4:
Sulfur-fixing rate under the table 4 different additive differing temps
By the result of table 4 as can be seen, along with the rising of furnace temperature, the sulfur-fixing rate of additive reduces gradually, and according to the result of table 4, under the differing temps in table, the sulfur-fixing rate that adds additive for sulfur capture of the present invention is the highest.
Three, industrial application comprehensive test
Table 5 additive for sulfur capture is at the environmental protection test of different tests object table as a result
Industrialness is used comprehensive test and is shown, sulfur dioxide emissioning concentration when adopting high temperature agent of the present invention can significantly reduce the burning of high-sulfur power clean fine coal reaches national requirements for environmental protection.High-temperature desulfurization agent of the present invention has wide material sources, cheap (≤250 yuan/ton), asepsis environment-protecting, feature such as high-temperature fixed sulfur is reliable for effect.See Table 5.
Claims (12)
1. high-temperature fixed sulfur additive, it is characterized in that: described high-temperature fixed sulfur additive mainly comprises following compositions, by weight percentage:
。
2. high-temperature desulfurization agent as claimed in claim 1 mainly comprises following compositions, by weight percentage:
。
3. the preparation method of high-temperature fixed sulfur additive as claimed in claim 1 or 2, it is characterized in that: the mixture with the coal gangue of significant quantity, industrial acid sludge, power station slag or flyash and sandstone makes through high temperature sintering; 1400 ℃～1500 ℃ of the temperature of described high temperature sintering, described calcination time 1.5～3 hours.
4. the preparation method of high-temperature fixed sulfur additive as claimed in claim 3, it is characterized in that: in the mixture of described preparation high-temperature fixed sulfur additive, coal gangue accounts for 60～75%, the industry acid sludge accounts for 5～8%, power station slag or flyash account for 15～30%, sandstone accounts for 5～8%, all by weight percentage.
5. as the preparation method of claim 3 or 4 described high-temperature fixed sulfur additives, it is characterized in that: the main component CaCO of described coal gangue
3, MgCO
3, CaO content 40%～50%, MgO content 2.0%～5.0%, by weight percentage.
6. the preparation method of high-temperature fixed sulfur additive as claimed in claim 5, it is characterized in that: described industrial acid sludge is vitriol works's acid sludge, wherein Fe
2O
3Content 40%～50%, by weight percentage.
7. the preparation method of high-temperature fixed sulfur additive as claimed in claim 6 is characterized in that: described power station slag or flyash, wherein Al
2O
3Content 20～30%, specific activity 70%～75%; Described sandstone, its main component SiO
2Content 80%～90%, all by weight percentage.
8. the preparation method of high-temperature fixed sulfur additive as claimed in claim 3, it is characterized in that: with main component is CaCO
3, MgCO
3, CaO content 40%～50%, the coal gangue of MgO content 2.0%～5%, Fe
2O
3Vitriol works's acid sludge of content 40%～50%, and Al
2O
3Content 20～30%, the power station slag of specific activity 70%～75%, and main component SiO
2The sandstone of content 80%～90% with the mass ratio be the ratio of 65:6:22:7 mix join after, calcination is 3 hours under the high temperature of 1400 ℃ of temperature, carries out ore grinding, sieve classification again, makes high-temperature fixed sulfur additive.
9. high-temperature desulfurization agent is to be that the mixed of 1:2.5～3.5 makes according to mass ratio as each described high-temperature fixed sulfur additive of claim 3～8 and sulphur-fixing agent.
10. high-temperature desulfurization agent as claimed in claim 9 is characterized in that: described sulphur-fixing agent is Wingdale sulphur-fixing agent or unslaked lime sulphur-fixing agent.
11. as claim 9 or 10 described high-temperature desulfurization agents, it is characterized in that: the mass ratio of described high-temperature fixed sulfur additive and sulphur-fixing agent is 1:3, the CaO content 85%～95% of described unslaked lime sulphur-fixing agent.
12. preparation method as high-temperature desulfurization agent as described in the claim 9,10 or 11, it is characterized in that: at first the unslaked lime sulphur-fixing agent with described high-temperature fixed sulfur additive and CaO content 85%～95% is that 1:3 stirs according to mass ratio, the adding mass concentration is 5%～8% industrial NaCL salts solution, dehydrates to make in 2～4 hours in 20～30 ℃ of air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010267854 CN101899353B (en) | 2010-08-31 | 2010-08-31 | High-temperature fixed sulfur additive and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010267854 CN101899353B (en) | 2010-08-31 | 2010-08-31 | High-temperature fixed sulfur additive and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101899353A true CN101899353A (en) | 2010-12-01 |
| CN101899353B CN101899353B (en) | 2013-10-30 |
Family
ID=43225280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010267854 Expired - Fee Related CN101899353B (en) | 2010-08-31 | 2010-08-31 | High-temperature fixed sulfur additive and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101899353B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104479792A (en) * | 2014-12-29 | 2015-04-01 | 李康 | Preparation method for desulfurizing agent for boiler coal combustion |
| CN105439417A (en) * | 2015-11-18 | 2016-03-30 | 陕西科技大学 | Red mud sulfur-fixing method |
| CN107057796A (en) * | 2017-06-09 | 2017-08-18 | 太原理工大学 | A kind of high-temperature fixed sulfur additive and its preparation method and application |
| CN112747994A (en) * | 2020-12-25 | 2021-05-04 | 防城海关综合技术服务中心 | Sulfur-fixing agent for directly measuring mercury by solid sample introduction |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325947A (en) * | 2001-06-26 | 2001-12-12 | 孙福刚 | Process for preparing additive of briquette and its appliation |
| CN101163655A (en) * | 2005-04-22 | 2008-04-16 | 仲村训一 | Biofuel conversion process |
| CN101402894A (en) * | 2008-11-05 | 2009-04-08 | 顾渊 | Additive for magnesium-base coal and producing method thereof |
| WO2009098523A2 (en) * | 2008-02-07 | 2009-08-13 | International Innovative Technologies Limited | Fuel enrichment process |
| CN101775325A (en) * | 2009-01-14 | 2010-07-14 | 张保森 | Coal composite sulfur fixing agent |
-
2010
- 2010-08-31 CN CN 201010267854 patent/CN101899353B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325947A (en) * | 2001-06-26 | 2001-12-12 | 孙福刚 | Process for preparing additive of briquette and its appliation |
| CN101163655A (en) * | 2005-04-22 | 2008-04-16 | 仲村训一 | Biofuel conversion process |
| WO2009098523A2 (en) * | 2008-02-07 | 2009-08-13 | International Innovative Technologies Limited | Fuel enrichment process |
| CN101402894A (en) * | 2008-11-05 | 2009-04-08 | 顾渊 | Additive for magnesium-base coal and producing method thereof |
| CN101775325A (en) * | 2009-01-14 | 2010-07-14 | 张保森 | Coal composite sulfur fixing agent |
Non-Patent Citations (1)
| Title |
|---|
| 李京社等: "硫容量模型和在五元渣系CaO-SiO2-MgO-Al2O3-FetO中的应用", 《钢铁研究学报》, vol. 21, no. 2, 28 February 2009 (2009-02-28) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104479792A (en) * | 2014-12-29 | 2015-04-01 | 李康 | Preparation method for desulfurizing agent for boiler coal combustion |
| CN104479792B (en) * | 2014-12-29 | 2016-08-24 | 段仲达 | A kind of preparation method of the desulfurizing agent of boiler fired coal |
| CN105439417A (en) * | 2015-11-18 | 2016-03-30 | 陕西科技大学 | Red mud sulfur-fixing method |
| CN107057796A (en) * | 2017-06-09 | 2017-08-18 | 太原理工大学 | A kind of high-temperature fixed sulfur additive and its preparation method and application |
| CN112747994A (en) * | 2020-12-25 | 2021-05-04 | 防城海关综合技术服务中心 | Sulfur-fixing agent for directly measuring mercury by solid sample introduction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101899353B (en) | 2013-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100582048C (en) | Coal-saving desulfurization synergistic additive for cement clinker calcination | |
| CN108117292A (en) | A kind of copper tailing slag complex mineral blending material and preparation method thereof | |
| CN102068886B (en) | Desulfurizer compounded by industrial wastes and production method thereof | |
| CN105567272B (en) | The calcium base barium manganese aluminium compound additive and preparation method of raising domestic coke high-temperature fixed sulfur effect and application | |
| CN101220312A (en) | Combustion improver for catalytic combustion of blast furnace coal injection | |
| CN105733634B (en) | The calcium base potassium magnesium silicon compound additive and preparation method of raising domestic coke high-temperature fixed sulfur effect and application | |
| CN104402270B (en) | A kind of high calcium fly-ash cement and preparation method thereof | |
| CN101899353B (en) | High-temperature fixed sulfur additive and preparation method thereof | |
| CN112759289B (en) | Cement raw material additive with grinding-aid and decomposition-promoting effects | |
| CN105198250A (en) | FBC (fluidized bed combustion) ash containing cement and preparation method thereof | |
| CN101643325A (en) | Preparation method of low-sulfur low-carbon active lime | |
| CN105199805A (en) | Coal additive for reducing smoke dust discharging quantity | |
| CN103468343A (en) | Sulfur-fixing agent for carbon-containing pellets and preparation method thereof | |
| CN105621909B (en) | It is a kind of to mix modified Desulphurization and the cement of rice hull ash again | |
| CN110407492A (en) | A kind of modified superfine fly ash aggregate | |
| CN100496673C (en) | Composite sulfur fixing agent | |
| CN103058542A (en) | Novel steel mineral powder composite admixture excitant, and preparation and use methods of same | |
| CN102827665A (en) | Coal saving and desulfurating combustion improver and preparation method thereof | |
| CN1330599C (en) | Method for producing sulfuric acid associated with high Belite cement through anhydrite | |
| CN100540638C (en) | A kind of coal saving and combustion supporting sulfur fixer and method for making | |
| CN109279770A (en) | The desulphurization during combustion of petroleum coke and the method that reduces mirabilite content are used in a kind of glass industry | |
| CN102268311A (en) | Coal-burning sulfur-fixing catalytic combustion compound additive and preparation method thereof | |
| CN107057796A (en) | A kind of high-temperature fixed sulfur additive and its preparation method and application | |
| CN1278936C (en) | Process of utilizing flyash to prepare alumina and co-produce cement clinker | |
| CN101219866A (en) | One-step desulfurization of breeze furnace and method for producing low heat cement with modified coal slag thereof |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20150831 |
|
| EXPY | Termination of patent right or utility model |