CN101560425B - Novel coal sulphur-fixing agent, preparation method and application thereof - Google Patents
Novel coal sulphur-fixing agent, preparation method and application thereof Download PDFInfo
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- CN101560425B CN101560425B CN200910085220A CN200910085220A CN101560425B CN 101560425 B CN101560425 B CN 101560425B CN 200910085220 A CN200910085220 A CN 200910085220A CN 200910085220 A CN200910085220 A CN 200910085220A CN 101560425 B CN101560425 B CN 101560425B
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- sulphur
- fixing agent
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Abstract
The invention provides a novel sulphur-fixing agent for direct combustion of high-sulphur coal, which is prepared by adopting alkyl alcohol amine as a main agent and adopting alkaline-earth metallic compounds and aluminum metallic compounds as assistant agents. The sulphur-fixing agent comprises the following components by weight percentage: 30 to 70 percent of alkyl alcohol amine, 15 to 40 percent of alkaline-earth metallic compounds, and 10 to 35 percent of aluminum metallic compounds. The sulphur-fixing agent in use is liquid, is mixed with pulverized coal, lump coal or briquettes well by aspraying or stirring method and then is used. The using amount of the sulphur-fixing agent is about 0.1 percent, and the desulfurization efficiency of the sulphur-fixing agent reaches 80 to 90 percen t.
Description
Technical field
The present invention relates to control the topsoil technical field, be specifically related to a kind of when reducing coal combustion tail gas sulphur dioxide pollute and alleviate the novel sulphur-fixing agent of acid rain.
Background technology
The fire coal that burning of coal produces a large amount of waste gas, particularly high sulfur content directly burns without desulfurization, produces a large amount of sulfurous gas severe contamination atmosphere.Removing of organosulfur in the coal is the difficult problem of Desulfurization Technology of Coal, and at present, the technology and the patent of the coal-fired sulfur fixing agent of exploitation reach tens of kinds both at home and abroad, and the solid sulphur during to coal combustion has played certain effect, but solid sulphur efficiency does not surpass 70%.The sulphur-fixing agent usage quantity is higher, influences the burning of coal performance, and the tail gas sweetening effectiveness does not also reach the emission standards for sulfur dioxide of national regulation.
In China economically underdeveloped area, middle and small burn coal boiler lacks the tail gas desulfurizer at present, and the tail gas discharging directly into atmosphere also demands developing a kind of sulphur-fixing agent easy to use, effective urgently often, so that reduce the discharging of sulfurous gas.
Summary of the invention
The object of the invention is to solve the deficiency of sulphur-fixing agent technology before, and the novel sulphur-fixing agent of the direct combustion desulfurization efficient of a kind of effective raising sulfur-bearing coal is provided, and makes solid sulphur efficiency reach 80～90%wt.
In order to achieve the above object, the present invention provides following technical scheme:
A kind of novel coal sulphur-fixing agent, the employing alkyl alcoholamine is a host, alkaline earth metal cpds and aluminum-based metal compound are the compound preparation of assistant agent; Said each component content in sulphur-fixing agent is: alkyl alcoholamine 30～70%wt, alkaline earth metal cpds 15～40%wt, aluminum-based metal compound 10～35%wt.
Said alkyl alcoholamine is selected from a kind of in thanomin, diethylolamine, trolamine, Propanolamine, Yi Bingchunan, HSDB 338 or the tri-isopropanolamine, preferred HSDB 338.
Said alkaline earth metal cpds is selected from a kind of in lime carbonate, calcium hydroxide, magnesiumcarbonate, Marinco H, barium carbonate or the hydrated barta; Preferably calcium hydroxide.
Said aluminum-based metal compound is selected from a kind of in aluminium carbonate, sodium aluminate or the white lake; Preferred white lake.
The present invention also provides said preparation of sulfur-fixing agent method, is said host and assistant agent raw material are processed 80 order left and right sides fine powders earlier, and by said weight proportion compatibility, thorough mixing evenly makes the solid sulphur-fixing agent then.
The present invention also further provides the application of said sulphur-fixing agent; Promptly earlier said solid sulphur-fixing agent is mixed with the aqueous solution of 1～40%wt concentration; The aqueous solution of preferred 5～30%wt concentration adds in the fire coal then, and addition calculates with the weight of solid sulphur-fixing agent; The solid sulphur-fixing agent that promptly adds is 0.01～1.0%wt of coal-fired weight, preferred 0.05～0.5%wt.
Said addition manner can be to carry in the coal-fired process spraying or on the fire coal heap, spray restir even at travelling belt.
It is main sulphur-fixing agent that characteristics of the present invention are to use the alkyl alcoholamine compound.It can not only remove sour gas H
2S is simultaneously to removing the organosulfur best results in the coal.
The present invention compares with existing sulphur-fixing agent, has tangible advantage:
1, coal-fired sulfur fixing agent efficient is at 80～90%wt.
2, sulphur-fixing agent usage quantity of the present invention is 0.05～0.1% of a coal-fired weight, and is lower than existing sulphur-fixing agent consumption.
Embodiment
Below in conjunction with specific embodiment the present invention is further specified.
Instance one
Sulphur-fixing agent proportioning: HSDB 338 70%, calcium hydroxide 20%wt, white lake 10%wt.
Solid ingredient is mixed, get the 80 gram mixtures 20%wt of being mixed with spray solution soluble in water in 2.5%, 100 kilogram of fire coal of sulphur content; Mix; In pilot boiler, burn, 800～1000 ℃ of coal-fired temperature, test tail gas sulphur dioxide content is 80 milligrams/cubic metre.
With 100 kilograms of fire coals of identical sulphur content, unguyed sulphur agent, the appearance as a comparison of burning under the similarity condition, the emission concentration of testing its sulfurous gas is 550 milligrams/cubic metre, Gu sulphur efficiency is 85.2%.
Instance two
Sulphur-fixing agent is with instance one, gets 100 gram sulphur-fixing agents and is dissolved into the 20%wt aqueous solution and is sprayed on the fire coal of 100 kilograms of sulphur content 3.45%, mixes.On 800～1000 ℃ of test furnaces, burn, surveying the tail gas sulphur dioxide mean concns is 130 milligrams/cubic metre.
With identical sulphur content, 100 kilograms of unguyed sulphur agent of fire coal, under the similarity condition fire coal as a comparison the appearance, testing its sulfurous gas average emission concentration is 1505 milligrams/cubic metre, Gu sulphur efficiency 91.4%.
Instance three
The sulphur-fixing agent proportioning, HSDB 338 60%wt, calcium hydroxide 25%wt, white lake 15%.
Solid ingredient is mixed, get 60 grams, 20% solution that is made into soluble in water, be sprayed in 1.45%, 100 kilogram of fire coal of sulphur content and mix.In the small-scale test stove, 800～1000 ℃ of temperature of combustion record 65 milligrams/cubic metre of tail gas sulphur dioxide average emission concentration.
Not with sulphur-fixing agent, same 1.45%, 100 kilogram of fire coal of sulphur content, burning under the same conditions, surveying its sulfurous gas average emission concentration is 455 milligrams/cubic metre, Gu sulphur efficiency 85.7%.
Instance four
Sulphur-fixing agent proportioning: Propanolamine 70%wt, calcium hydroxide 20%wt, white lake 10%wt
Each component is mixed, get 80 gram mixtures preparation soluble in water 20%wt solution, evenly be sprayed on the fire coal of 100 kilograms of sulphur content 3.45%, 255 milligrams/cubic metre of tail gas sulphur dioxide mean concnss are surveyed in burning on 800-1000 ℃ of test furnace.
The contrast of unguyed sulphur agent is with instance two, and its tail gas sulphur dioxide concentration is 1505 milligrams/cubic metre, the solid sulphur efficiency 83.06% of sulphur-fixing agent.
Instance five
Sulphur-fixing agent proportioning: thanomin 60%wt, lime carbonate 25%wt, aluminium carbonate 15%
Each component is mixed, get the 80 grams 20%wt of being mixed with solution soluble in water, be sprayed in 2.5%, 100 kilogram of fire coal of sulphur content, temperature of combustion 800-1000 ℃ records 106 milligrams/cubic metre of sulfur dioxide concentrations in the small-scale test stove.
Simultaneous test is with instance one, Gu sulphur efficiency is 80.7%.
Comparative Examples one
Gu sulphur proportioning: HSDB 338 25%wt, calcium hydroxide 45%wt, white lake 30%wt
Each component mixes, and gets the 80 gram mixtures 20%wt of being made into solution soluble in water, is sprayed at 100 kilograms, on 3.45% the fire coal, on 800-1000 ℃ of test furnace, burns, and surveys 435 milligrams/cubic metre of tail gas sulphur dioxide mean concnss.
Simultaneous test is with instance two, Gu sulphur efficiency is 71.1%.
Comparative Examples two
Get 80 gram HSDB 338s and be dissolved into the 20%wt aqueous solution, be sprayed on the fire coal of 100 kilograms of sulphur content 3.45%, on 800-1000 ℃ of test furnace, burn, surveying the tail gas sulphur dioxide mean concns is 145 milligrams/cubic metre.
Simultaneous test is with instance two, Gu sulphur efficiency is 90%.
Comparative Examples three
Sulphur-fixing agent is weight proportion mixtures such as 100 gram calcium hydroxides and white lake, is sprayed on 100 kilograms of sulphur content 3.45% fire coals, on 800-1000 ℃ of test furnace, burns, and surveying the tail gas sulphur dioxide mean concns is 850 milligrams/cubic metre.
Simultaneous test is with instance two, Gu sulphur efficiency is 43.5%.
Claims (7)
1. coal-fired sulfur fixing agent, it is characterized in that: the employing alkyl alcoholamine is a host, alkaline earth metal cpds and aluminum-based metal compound are the compound preparation of assistant agent; Said each component content in sulphur-fixing agent is: alkyl alcoholamine 30 ~ 70%wt, alkaline earth metal cpds 15 ~ 40%wt, aluminum-based metal compound 10 ~ 35%wt; Said alkaline earth metal cpds is selected from a kind of in lime carbonate, calcium hydroxide, magnesiumcarbonate, Marinco H, barium carbonate or the hydrated barta; Said aluminum-based metal compound is selected from a kind of in aluminium carbonate, sodium aluminate or the white lake.
2. the described sulphur-fixing agent of claim 1 is characterized in that: said alkyl alcoholamine is selected from a kind of in thanomin, diethylolamine, trolamine, Propanolamine, Yi Bingchunan, HSDB 338 or the tri-isopropanolamine.
3. the described sulphur-fixing agent of claim 2, it is characterized in that: said alkyl alcoholamine is a HSDB 338.
4. the described sulphur-fixing agent of claim 1, it is characterized in that: said alkaline earth metal cpds is a calcium hydroxide.
5. the said sulphur-fixing agent of claim 1, it is characterized in that: said aluminum-based metal compound is a white lake.
6. the said preparation of sulfur-fixing agent method of claim 1 is characterized in that: said host and assistant agent raw material are processed 80 order fine powders earlier, and by said weight proportion compatibility, thorough mixing evenly makes sulphur-fixing agent then.
7. the application of the described sulphur-fixing agent of claim 1; It is characterized in that: the aqueous solution that earlier said sulphur-fixing agent is mixed with 1 ~ 40%wt concentration; Add to then in the fire coal, addition calculates with the weight of sulphur-fixing agent, and the sulphur-fixing agent that promptly adds is 0.05 ~ 0.5%wt of coal-fired weight.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910085220A CN101560425B (en) | 2009-06-04 | 2009-06-04 | Novel coal sulphur-fixing agent, preparation method and application thereof |
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| CN200910085220A CN101560425B (en) | 2009-06-04 | 2009-06-04 | Novel coal sulphur-fixing agent, preparation method and application thereof |
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| CN101560425A CN101560425A (en) | 2009-10-21 |
| CN101560425B true CN101560425B (en) | 2012-09-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102191111B (en) * | 2011-05-11 | 2013-04-10 | 王国群 | High temperature reduced type composite fire coal sulfur fixing agent and preparation method thereof |
| CN103272474B (en) * | 2013-06-19 | 2015-05-20 | 河南省科学院能源研究所有限公司 | Combustion desulphurization agent for furfural residue |
| CN106833803A (en) * | 2017-03-11 | 2017-06-13 | 湖南七纬科技有限公司 | A kind of combustion-supporting sulfur-fixing agent for producing clinker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1225383A (en) * | 1998-12-18 | 1999-08-11 | 中国科学院生态环境研究中心 | Prepn. and application art for aluminium-magnesium series sulfur-fixation agent |
| CN1241621A (en) * | 1999-07-22 | 2000-01-19 | 薛伟 | Making process and waterproofing treatment of high-energy color briquette |
| CN1785522A (en) * | 2005-11-30 | 2006-06-14 | 曹志德 | Desulfur denitrogen catalyst of fuel coal, fuel oil boiler smoke and its desulfur denitrogen method |
| CN101397514A (en) * | 2007-09-30 | 2009-04-01 | 孟小平 | Quick-burning clean coal fines and method for producing the same |
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2009
- 2009-06-04 CN CN200910085220A patent/CN101560425B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1225383A (en) * | 1998-12-18 | 1999-08-11 | 中国科学院生态环境研究中心 | Prepn. and application art for aluminium-magnesium series sulfur-fixation agent |
| CN1241621A (en) * | 1999-07-22 | 2000-01-19 | 薛伟 | Making process and waterproofing treatment of high-energy color briquette |
| CN1785522A (en) * | 2005-11-30 | 2006-06-14 | 曹志德 | Desulfur denitrogen catalyst of fuel coal, fuel oil boiler smoke and its desulfur denitrogen method |
| CN101397514A (en) * | 2007-09-30 | 2009-04-01 | 孟小平 | Quick-burning clean coal fines and method for producing the same |
Non-Patent Citations (1)
| Title |
|---|
| JP昭57-135895A 1982.08.21 |
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