CN104152208A - Coal desulphurization technology - Google Patents
Coal desulphurization technology Download PDFInfo
- Publication number
- CN104152208A CN104152208A CN201410360519.0A CN201410360519A CN104152208A CN 104152208 A CN104152208 A CN 104152208A CN 201410360519 A CN201410360519 A CN 201410360519A CN 104152208 A CN104152208 A CN 104152208A
- Authority
- CN
- China
- Prior art keywords
- coal
- parts
- stir
- technique
- agent
- 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.)
- Pending
Links
Abstract
The invention discloses a coal desulphurization technology. The coal desulphurization technology is formed by scientifically compounding and processing a special emulsifying agent, a dispersing agent, a cleaning agent, a complexing agent and a penetrating agent in a certain ratio. According to a coal combustion reaction mechanism, a complexing coal washing desulphurizing agent composition is added in coal washing desulphurization equipment, under the actions of oxidation, catalysis, metal ion exchange and the like, and harmful substances, such as inorganic sulphur and organic sulphide, in coal form sulphide soluble in water by virtue of a chemical reaction, so that the aim of protecting the environment is achieved.
Description
Technical field
The present invention relates to coal desulfurization field, be specifically related to a kind of technique of coal desulfurization.
Background technology
Sulphur in coal exists with the state of organosulfur and inorganic sulfur conventionally.It is very complicated that organosulfur forms structure, and main existence form has mercaptan, thioether, double thioether and is the thioquinones of heterocycle state and thiophene etc.; Organosulfur is mainly from the protein of the protein in Coal-forming Plants and microorganism; In protein, sulphur content is 0.3%～2.4%, and total sulfur content is generally all less than the most of coals below 0.5%, generally all take organosulfur as main.In coal, inorganic sulfur is mainly from various sulfocompounds in mineral substance and a small amount of vitriol.The complexity that sulfur is removed is relevant with granular size and the distribution of sulfide, and granularity large person can remove by washing process, and granularity is minimum and be evenly distributed on person in coal, is just difficult to remove; In organosulfur and coal, organic symbiosis, becames one, and is evenly distributed, not easy-clear.
Sulphur in coal is all extremely harmful for coking, gasification, burning and storing, so sulphur content is one of important indicator of evaluating ature of coal.Coal is when coking, and approximately 60% sulphur enters coke.The existence of sulphur makes the pig iron have red brittleness, with the steel of these pig iron refinings, can not become a useful person by Direct Rolling.For except desulfuration, in blast furnace is produced, need to increase Wingdale and coke consumption, thereby cause blast furnace throughput to reduce, coke ratio is high.Experience shows, the every increase by 0.1% of sulphur content in coke, and during ironmaking, coke and Wingdale will increase respectively 2%, and blast furnace throughput declines 2%～2.5%, therefore to the coal for coking, requires sulphur content to be less than 1%.
Summary of the invention
For addressing the above problem, the invention provides a kind of technique of coal desulfurization.
For achieving the above object, the technical scheme that the present invention takes is:
A technique for coal desulfurization, comprises the steps:
S1, get appropriate coal and pulverize, granularity is 0.075mm;
S2, the coal dust of step S1 gained is placed in to reactor, adds the clorox that 20-25 part concentration is 30-100mg/L, stir;
S3, step S2 gained solution is adjusted to PH=7, all add several times appropriate ammonium persulphate, stir, reaction 25min;
S4, the solution of step S3 gained is heated to 120 ℃, adds 25-32 part zellon, 25-32 part p-cresol, stirs, extraction 100min;
S5, add 16-21 part HEDP network iron, appropriate dihydroxy-benzene and nitrilotriacetic acid(NTA), stir;
S6, add 7～12 parts of Manganse Dioxide, stir, oxidation 60min;
S7, under agitation, 3～5 parts of aluminium iron polychlorides, 1～2 part of urea, 1～2 part of polyacrylamide, 0.5～0.8 part of Sodium dodecylbenzene sulfonate and 0.2～0.4 part of dispersion agent JFC are joined in step S6 gained solution successively, after reaction 90min, filter distillation.
Wherein, described step also comprises gets 12～16 parts of sodium dichromate 99 gasifications, slowly passes in reactor, and whole process runs through whole sulfur removal technology.
Wherein, described n (ammonium persulphate): n (sulfide)=1.5.
Wherein, the volume ratio of described zellon and p-cresol is 1: 1, and liquid-solid ratio is 12: 1.
Wherein, described n (HEDP): n (nitrilotriacetic acid(NTA)): n (Fe
3+)=(0.5-1): 1: 1.
Wherein, clorox and ammonium persulphate are strong oxidizer, mainly remove the inorganic sulfur in coal.Ammonium persulphate is initiator, easily resolves into free radical.The desulphurization mechanism of clorox and ammonium persulphate is to be that element sulphur in coal is converted into water-soluble ion by oxygenizement, then by washing effect, remove, pyrite is the main existence form of inorganic sulfur in coal, its element sulphur can oxidized generation sulfate ion, and vitriol is easily deposited in the bottom of wash coaling equipment, becomes body refuse and removes.
Zellon, the deviate from successful of p-cresol to organic sulfur in coal.The desulphurization mechanism of zellon, p-cresol is the extraction by this type of organic solvent, by the element sulphur of the organic sulfur-containing group in coal and a small amount of inorganic sulfur element extraction out.
HEDP network iron is all-round desulfurization complexing agent, and complexing agent be utilize himself acidity and with the complex ability of active group excellence, they have very strong complex ability to the iron ion in coal, pyrite and white pyrite molecule and sulfonium ion, this complexing agent advantage is to be easy to biological degradation, free from environmental pollution, toxicological harmless effect.Dihydroxy-benzene can improve its oxidisability, accelerates desulphurization reaction speed, adds nitrilotriacetic acid(NTA) can strengthen the complex ability to ferrous ion.
Manganse Dioxide belongs to strong oxidizer, and under acidic conditions, oxidisability is stronger, can be oxidized the sulfonium ion of negative valency state and sulfurous gas etc.
Sodium dichromate 99 is the catalyzer in product of the present invention, add can significantly improve after catalyzer desulphurizing activated, the lattice that makes the to fire carbon content in coal variation that is distorted, carbon-metal complex compound easily spins off from lattice, can promote the generating rate of intermediate product, and then improve the Complexation Efficiency of sulphur in coal; Metallic substance is had to good inhibition protection, can effectively prevent the corrosion of the equipment such as boiler, and the complexing of sulfide is had to catalysed oxidn.
Aluminium iron polychloride is to form a kind of inorganic polymer coagulant by the hydrolysis of aluminium salt and molysite coagulation, according to synergy principle, adds the compound and a kind of new and effective coagulating agent that makes of fe or ferric oxide and other iron containing compounds.Its collection aluminium salt and molysite be advantage separately, and the form of aluminum ion and iron ion is all had clear improvement, and extent of polymerization greatly improves.Get aluminium, iron coagulating agent operates favourable part to air supporting separately, improves the coagulation performance of polymerize aluminum chloride.
Polyacrylamide is high molecular weight water soluble polymer, has good flocculence, can reduce the friction resistance between liquid.
JFC tensio-active agent is emulsification, permeate agent, makes catalyzer can be penetrated into equably coal grain surface, can before burning, make catalyzer fully mix with other added components.Product of the present invention carries out complexing to coal and cleans desulfurization processing, sulphur is reacted with complexing agent and strong oxidizer, generate the sulfide salt of the soluble complex compound in water, reach the object of coal washing desulfurization, complete the coal washing desulfurization of coal before burning, desulfuration efficiency is in 70% left and right.Use product of the present invention to carry out complexing coal washing desulfurization, can alleviate sweetener, remaining SO2 is carried out to the processing pressure of desulfurization, large to the sulfur-bearing fluctuation variation of ature of coal especially and sweetener is processed the boiler that does not reach sweetening effectiveness, all, without existing sweetener is undergone technological transformation and extending capacity reformation, just can reach the environmental protection index of sulfur dioxide emissions.
The present invention has following beneficial effect:
In such scheme, by extraordinary emulsifying agent, dispersion agent, clean-out system and complexing agent and permeate agent, according to certain ratio, processed through science is composite.According to coal burning reaction mechanism; in coal washing sweetener, add complexing coal washing sweetening agent composition; by effects such as oxidation, catalysis and metal ion exchanged; the objectionable impuritiess such as the inorganic sulfur in coal and organic sulfide are formed to sulfide soluble in water by chemical reaction, reach the object of environment protection.
Embodiment
In order to make objects and advantages of the present invention clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Embodiment 1
A technique for coal desulfurization, comprises the steps:
S1, get appropriate coal and pulverize, granularity is 0.075mm;
S2, the coal dust of step S1 gained is placed in to reactor, adds the clorox that 20 parts of concentration are 30mg/L, stir;
S3, step S2 gained solution is adjusted to PH=7, all add several times appropriate ammonium persulphate, stir, reaction 25min;
S4, the solution of step S3 gained is heated to 120 ℃, adds 25 parts of zellons, 25 parts of p-cresol, stir, extraction 100min;
S5, add 16 parts of HEDP network iron, 16 parts of dihydroxy-benzenes and 16 parts of nitrilotriacetic acid(NTA)s, stir;
S6, add 7 parts of Manganse Dioxide, stir, oxidation 60min;
S7, under agitation, joins 3 parts of aluminium iron polychlorides, 1 part of urea, 1 part of polyacrylamide, 0.5 part of Sodium dodecylbenzene sulfonate and 0.2 part of dispersion agent JFC in step S6 gained solution successively, after reaction 90min, filters distillation.
Wherein, described step also comprises gets 12 parts of sodium dichromate 99 gasifications, slowly passes in reactor, and whole process runs through whole sulfur removal technology.
After testing, by the coal after infrared spectroscopy Check processing, desulfurization degree reaches 98.87%.
Embodiment 2
A technique for coal desulfurization, comprises the steps:
S1, get appropriate coal and pulverize, granularity is 0.075mm;
S2, the coal dust of step S1 gained is placed in to reactor, adds the clorox that 25 parts of concentration are 100mg/L, stir;
S3, step S2 gained solution is adjusted to PH=7, all add several times appropriate ammonium persulphate, stir, reaction 25min;
S4, the solution of step S3 gained is heated to 120 ℃, adds 32 parts of zellons, 32 parts of p-cresol, stir, extraction 100min;
S5, add 21 parts of HEDP network iron, 21 parts of dihydroxy-benzenes and 21 parts of nitrilotriacetic acid(NTA)s, stir;
S6, add 12 parts of Manganse Dioxide, stir, oxidation 60min;
S7, under agitation, joins 5 parts of aluminium iron polychlorides, 2 parts of urea, 2 parts of polyacrylamides, 0.8 part of Sodium dodecylbenzene sulfonate and 0.4 part of dispersion agent JFC in step S6 gained solution successively, after reaction 90min, filters distillation.
Wherein, described step also comprises gets 16 parts of sodium dichromate 99 gasifications, slowly passes in reactor, and whole process runs through whole sulfur removal technology.
After testing, by the coal after infrared spectroscopy Check processing, desulfurization degree reaches 99.85%.
Embodiment 3
A technique for coal desulfurization, comprises the steps:
S1, get appropriate coal and pulverize, granularity is 0.075mm;
S2, the coal dust of step S1 gained is placed in to reactor, adds the clorox that 22.5 parts of concentration are 65mg/L, stir;
S3, step S2 gained solution is adjusted to PH=7, all add several times appropriate ammonium persulphate, stir, reaction 25min;
S4, the solution of step S3 gained is heated to 120 ℃, adds 28.5 parts of zellons, 28.5 parts of p-cresol, stir, extraction 100min;
S5, add 18.5 parts of HEDP network iron, appropriate dihydroxy-benzene and nitrilotriacetic acid(NTA), stir;
S6, add 9.5 parts of Manganse Dioxide, stir, oxidation 60min;
S7, under agitation, joins 4 parts of aluminium iron polychlorides, 1.5 parts of urea, 1.5 parts of polyacrylamides, 0.65 part of Sodium dodecylbenzene sulfonate and 0.3 part of dispersion agent JFC in step S6 gained solution successively, after reaction 90min, filters distillation.
Wherein, described step also comprises gets 14 parts of sodium dichromate 99 gasifications, slowly passes in reactor, and whole process runs through whole sulfur removal technology.
After testing, by the coal after infrared spectroscopy Check processing, desulfurization degree reaches 98.89%
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a technique for coal desulfurization, is characterized in that, comprises the steps:
S1, get appropriate coal and pulverize, granularity is 0.075mm;
S2, the coal dust of step S1 gained is placed in to reactor, adds the clorox that 20-25 part concentration is 30-100mg/L, stir;
S3, step S2 gained solution is adjusted to PH=7, all add several times appropriate ammonium persulphate, stir, reaction 25min;
S4, the solution of step S3 gained is heated to 120 ℃, adds 25-32 part zellon, 25-32 part p-cresol, stirs, extraction 100min;
S5, add 16-21 part HEDP network iron, appropriate dihydroxy-benzene and nitrilotriacetic acid(NTA), stir;
S6, add 7～12 parts of Manganse Dioxide, stir, oxidation 60min;
S7, under agitation, 3～5 parts of aluminium iron polychlorides, 1～2 part of urea, 1～2 part of polyacrylamide, 0.5～0.8 part of Sodium dodecylbenzene sulfonate and 0.2～0.4 part of dispersion agent JFC are joined in step S6 gained solution successively, after reaction 90min, filter distillation.
2. the technique of a kind of coal desulfurization according to claim 1, is characterized in that, described step also comprises gets 12～16 parts of sodium dichromate 99 gasifications, slowly passes in reactor, and whole process runs through whole sulfur removal technology.
3. the technique of a kind of coal desulfurization according to claim 1, is characterized in that, described n (ammonium persulphate): n (sulfide)=1.5.
4. the technique of a kind of coal desulfurization according to claim 1, is characterized in that, the volume ratio of described zellon and p-cresol is 1: 1, and liquid-solid ratio is 12: 1.
5. the technique of a kind of coal desulfurization according to claim 1, is characterized in that, described n (HEDP): n (nitrilotriacetic acid(NTA)): n (Fe
3+)=(0.5-1): 1: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410360519.0A CN104152208A (en) | 2014-07-24 | 2014-07-24 | Coal desulphurization technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410360519.0A CN104152208A (en) | 2014-07-24 | 2014-07-24 | Coal desulphurization technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104152208A true CN104152208A (en) | 2014-11-19 |
Family
ID=51877840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410360519.0A Pending CN104152208A (en) | 2014-07-24 | 2014-07-24 | Coal desulphurization technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104152208A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105316073A (en) * | 2015-11-27 | 2016-02-10 | 榆林学院 | Coal desulfurization experiment device and desulfurization method |
| CN110551551A (en) * | 2019-10-15 | 2019-12-10 | 山西焦煤集团有限责任公司 | Method for eliminating G value of electric coal |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101618860A (en) * | 2009-08-06 | 2010-01-06 | 湖南科技大学 | Method for extracting sulfur in sulfur-contained slag by chlorohydrocarbon organic solvent |
| CN101983755A (en) * | 2010-11-05 | 2011-03-09 | 浙江菲达脱硫工程有限公司 | Dry-type flue gas desulphurization, denitration and dedusting integrated device and method |
| CN102091517A (en) * | 2010-12-22 | 2011-06-15 | 环境保护部华南环境科学研究所 | Integrated absorption solution for simultaneous desulfuration, denitration and mercury removal and preparation method and application thereof |
| CN102188897A (en) * | 2011-05-11 | 2011-09-21 | 国电科学技术研究院 | Wet flue gas desulfurization and denitrification combined method |
| CN103194296A (en) * | 2013-04-25 | 2013-07-10 | 兰州新星中性清洗技术有限公司 | Coal washing and desulfurizing agent composition and preparation method thereof |
| CN103343028A (en) * | 2013-07-16 | 2013-10-09 | 无锡市金盛助剂厂 | Desulfurization assistant |
| CN104099153A (en) * | 2014-07-17 | 2014-10-15 | 安徽理工大学 | Coal desulfurization technology |
-
2014
- 2014-07-24 CN CN201410360519.0A patent/CN104152208A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101618860A (en) * | 2009-08-06 | 2010-01-06 | 湖南科技大学 | Method for extracting sulfur in sulfur-contained slag by chlorohydrocarbon organic solvent |
| CN101983755A (en) * | 2010-11-05 | 2011-03-09 | 浙江菲达脱硫工程有限公司 | Dry-type flue gas desulphurization, denitration and dedusting integrated device and method |
| CN102091517A (en) * | 2010-12-22 | 2011-06-15 | 环境保护部华南环境科学研究所 | Integrated absorption solution for simultaneous desulfuration, denitration and mercury removal and preparation method and application thereof |
| CN102188897A (en) * | 2011-05-11 | 2011-09-21 | 国电科学技术研究院 | Wet flue gas desulfurization and denitrification combined method |
| CN103194296A (en) * | 2013-04-25 | 2013-07-10 | 兰州新星中性清洗技术有限公司 | Coal washing and desulfurizing agent composition and preparation method thereof |
| CN103343028A (en) * | 2013-07-16 | 2013-10-09 | 无锡市金盛助剂厂 | Desulfurization assistant |
| CN104099153A (en) * | 2014-07-17 | 2014-10-15 | 安徽理工大学 | Coal desulfurization technology |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105316073A (en) * | 2015-11-27 | 2016-02-10 | 榆林学院 | Coal desulfurization experiment device and desulfurization method |
| CN110551551A (en) * | 2019-10-15 | 2019-12-10 | 山西焦煤集团有限责任公司 | Method for eliminating G value of electric coal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103194296B (en) | Coal washing and desulfurizing agent composition and preparation method thereof | |
| CN111265993B (en) | Complex iron desulfurizer | |
| EP0628339A1 (en) | Method for extraction of undesirable substances in a gas | |
| KR20120020141A (en) | Method of scavenging hydrogen sulfide from hydrocarbon stream | |
| CN104099153A (en) | Coal desulfurization technology | |
| CN102092688A (en) | Technological process for producing acid with sulfur-containing gas | |
| US20160074804A1 (en) | Absorption medium, process for producing an absorption medium, and also process and apparatus for separating hydrogen sulfide from an acidic gas | |
| CN110876881B (en) | Complex iron desulfurizer for claus tail gas treatment | |
| CN104609645A (en) | Coking vacuum potash desulfurization waste solution desulfurization and decyanation pretreatment method and device | |
| CN103102033B (en) | Sulfur and ammonia-containing wastewater treatment method | |
| CN105923835B (en) | A method of vanadium industrial wastewater is handled using magnesium processes desulfuration waste | |
| CN113713861A (en) | Composite desulfurization catalyst, desulfurization device using same and desulfurization method | |
| CN104119946B (en) | A kind of catalytic cracking flue gas desulfurization and Acidic Gas Treating technique | |
| CN104152208A (en) | Coal desulphurization technology | |
| CN106215863A (en) | The heavy metal absorbent of a kind of purification diluted sulfric acid and application thereof | |
| CN103771608B (en) | A kind for the treatment of process of refinery alkaline residue | |
| CN107118820B (en) | Coal dearsenification method | |
| KR101774443B1 (en) | Liquid-form catalyst compositions for the removal of hydrogen sulfide from biogas | |
| CN103771607B (en) | The treatment process of refinery alkaline residue | |
| CN110142045B (en) | Catalyst for blast furnace gas desulfurization and preparation method thereof | |
| CN111592474A (en) | Preparation method of complex iron catalyst for wet desulphurization | |
| CN104086044B (en) | The removal methods of sulphur in a kind of black water that circulates | |
| CN104327901A (en) | Coal desulfurization process | |
| CN102329689B (en) | Additive and process for regeneration of waste oil for automobile engine | |
| CN112062194B (en) | Method for treating sulfur-containing sewage and bridge pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141119 |