CN1300816A - Combustion-promoting desulfurizing agent - Google Patents
Combustion-promoting desulfurizing agent Download PDFInfo
- Publication number
- CN1300816A CN1300816A CN 00129430 CN00129430A CN1300816A CN 1300816 A CN1300816 A CN 1300816A CN 00129430 CN00129430 CN 00129430 CN 00129430 A CN00129430 A CN 00129430A CN 1300816 A CN1300816 A CN 1300816A
- Authority
- CN
- China
- Prior art keywords
- combustion
- zeolite
- desulfurizing agent
- magnesite
- coal
- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/02—Use of additives to fuels or fires for particular purposes for reducing smoke development
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Treating Waste Gases (AREA)
Abstract
A combustion-promoting desulfurizing agent for coal is prepared from magnesite, dolomite and zeolite through mixing at any proportion. It can reduce the concentration and blackness of discharged fume, remove SO2 and increase heat efficiency of combustion by 15%. Its advantages are low cost and high effect.
Description
The present invention relates to a kind ofly in the coal burning process, can reduce smoke dust discharge concentration, reduce blackness of exhaustion, remove sulfurous gas, improve the mixture of coal-fired thermo-efficiency, specifically, is a kind of combustion-promoting desulfurizing agent.
Coal is the main energy sources of China, and along with expanding economy, its consumption is in continuous increase.In the coal burning process, produce a large amount of dust and sulfurous gas, environment is caused serious pollution, human and biological living environment is caused serious harm; In discharging flue gas process, discharge a large amount of heats simultaneously, cause the waste of the huge energy.The effective quantity discharged of control dust and sulfurous gas, especially in, the quantity discharged of arcola arrived instant stage.Coal desulfurization mainly is meant effectively to be handled the industrial smoke low-concentration sulfur dioxide, makes it reach national specified discharge standard.Sulfur method is a lot, is divided into desulfurization and burning back flue gas desulfurization in the preceding desulfurization of burning, the combustion processes substantially.Wherein desulfurization and combustion-supporting in the combustion processes, more common method is to add calcium oxide to carry out solid sulphur in fire coal at present, this is the principle that belongs to the solid sulphur of calcium base.The shortcoming of this calcium based sulphur-fixation reagent is that utilization ratio is lower, has only about 20% usually.Major cause is reaction product CaSO
4Have bigger molecular volume, thereby the CaSO that forms
4, easily stop up the hole of CaO, and can form one deck CaSO on the CaO surface
4Thereby, hindered SO
2Continuation with the CaO reaction.The key issue that calcium base sulfur-fixing rate improves is CaSO
4Unstable at high temperature makes it decomposite CO again
2, cause the SO in the flue gas
2Content increase, sweetening effectiveness is undesirable, desulfurization degree is generally at 10%-30%, and do not have significant combustion-supporting effect.
The object of the invention is to overcome the shortcoming in the above-mentioned technology, proposes a kind of combustion-promoting desulfurizing agent, utilizes the mineral of the cheapness of nature existence, makes mixture, uses in coal burning, makes it improve desulfurization degree, and can help burning, improves thermo-efficiency.
The object of the invention is realized by following technical scheme: this combustion-promoting desulfurizing agent is characterized in that it is mixed with arbitrary proportion by following three kinds of materials to form:
Magnesite (MgCO
3)
Rhombspar (CaCO
3MgCO
3)
Zeolite (MpD[Z] SH
2O)
These three kinds of material ratio of mixture ratio preferably are;
Magnesite 60-80%
Rhombspar 10-30%
Zeolite 10-20%
These three kinds of materials mix best ratio;
Magnesite 45%
Rhombspar 45%
Zeolite 10%
Magnesite and rhombspar are decomposed into the carbon reaction in MgO and CaO and the coal under hot conditions, generate magnesium carbide, and magnesium carbide active higher with the water vapour reaction, generates the propine mixture, the promotion burning of coal.In the rhombspar sulphur-fixing agent, add the method for silicate minerals zeolite, impel coal-fired high-temperature product to generate not labile sulfur-bearing double salt, with the purpose of the solid sulphur that reaches a high temperature.In sulphur-fixing agent, add the zeolite group mineral powder, constituted a kind of new sulphur-fixing agent.Zeolite is a kind of silicate minerals with special property, and is cheap, and the crystalline structure with the unexistent uniqueness of general mineral contains a certain amount of moisture and a large amount of holes, has advantages such as thermostability below 950 ℃.Therefore can adsorb the coal-fired SO that discharges
2, it is not entered in the discharged flue gas.With the zeolite is the calcium based sulphur-fixation reagent of additive, generates composition silicate at hot stage, can wrap up the CaSO of early stage generation
4, it is no longer decomposed, reach captured sulfur result.Zeolite under the condition that temperature is fit to, can with SO
2Reaction generates the sulphur silico-aluminate.Under general condition, zeolite can be with its special construction with SO
2Be adsorbed in hole and the hole, reach the desulfurization purpose.Zeolite has particular structure and crystal chemistry character, has features such as absorption, ion-exchange, catalysis during department, therefore has stronger combustion-supporting and sulfur capturing capacity.There is abundant fine quality zeolite in Jiao Xian Black Hills, applicant location, and the raw material of the cheapness of enriching is provided for combustion-promoting desulfurizing agent.
Coal is in combustion processes, by adding mineral such as magnesite, dolomite, zeolite, reaction generates oxyhydroxide, can be further and reaction of Salmon-Saxl, under reducing environment, by gradual reaction, generate the mixture and the sulphite of thiosulphate and various calcium sulphur compounds respectively, thereby fall doctor negative quantity discharged.
During use, magnesite, rhombspar and zeolite powder are broken to 100-300 purpose fine grained chippings, take by weighing certain weight according to predetermined ratio again, after it is mixed, can use.
Advantage of the present invention is an abundant raw material, and low price is easy to use, and it is effective to reduce smoke dust discharge concentration and blackness of exhaustion, and especially sweetening effectiveness is good, has effect combustion-supporting, that improve thermo-efficiency simultaneously, can improve thermo-efficiency more than 15%.
Embodiment:
Embodiment 1: get and be crushed to 90 kilograms of 100-300 purpose rhombspars, 10 kilograms in zeolite is mixed into combustion-promoting desulfurizing agent.Mixed combustion-promoting desulfurizing agent is added in the coal burns, add as amount and be 5% of coal.After tested, before not adding combustion-promoting desulfurizing agent, improve thermo-efficiency 15%, SO
2Clearance is 51%.
Embodiment 2: get and be crushed to 90 kilograms in 100-300 purpose magnesite, 10 kilograms in zeolite is mixed into combustion-promoting desulfurizing agent.Mixed combustion-promoting desulfurizing agent is added in the coal burns, addition is 5% of a coal.After tested, before not adding combustion-promoting desulfurizing agent, improve thermo-efficiency 19%, SO
2Clearance is 48%.
Embodiment 3: gets and is crushed to 45 kilograms in 100-300 purpose magnesite, and 45 kilograms of rhombspars, 10 kilograms in zeolite is mixed into combustion-promoting desulfurizing agent.Mixed combustion-promoting desulfurizing agent is added in the coal burns, addition is 5% of a coal.After tested, before not adding combustion-promoting desulfurizing agent, improve thermo-efficiency 17%, SO
2Clearance is 49%.
More than among three embodiment, the incendiary coal is Feicheng coal, sulphur content is 1.3%.
Claims (4)
1, a kind of combustion-promoting desulfurizing agent is characterized in that it is mixed with arbitrary proportion by following three kinds of materials to form:
Magnesite (MgCO
3)
Rhombspar (CaCO
3MgCO
3)
Zeolite (MpD[Z] SH
2O)
2,, it is characterized in that magnesite, be from the moiety ratio of marble and zeolite according to the described combustion-promoting desulfurizing agent of claim 1:
Magnesite 60-80%
Rhombspar 10-30%
Zeolite 10-20%
3,, it is characterized in that the moiety optimum proportion of magnesite, rhombspar and zeolite is according to the described combustion-promoting desulfurizing agent of claim 1:
Magnesite 45%
Rhombspar 45%
Zeolite 10%
4, according to claim 1 or 2 or 3 described combustion-promoting desulfurizing agents, it is characterized in that magnesite, rhombspar and zeolite are tiny particulate state, granularity is the 100-300 order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00129430A CN1098919C (en) | 2000-12-20 | 2000-12-20 | Combustion-promoting desulfurizing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00129430A CN1098919C (en) | 2000-12-20 | 2000-12-20 | Combustion-promoting desulfurizing agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1300816A true CN1300816A (en) | 2001-06-27 |
| CN1098919C CN1098919C (en) | 2003-01-15 |
Family
ID=4593500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00129430A Expired - Fee Related CN1098919C (en) | 2000-12-20 | 2000-12-20 | Combustion-promoting desulfurizing agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1098919C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107513451A (en) * | 2017-07-10 | 2017-12-26 | 管理 | A kind of stalk coal stone talc particles formula of magnesium catalytic combustion-supporting comprehensive energy boiler |
| CN111056817A (en) * | 2020-02-25 | 2020-04-24 | 和县明生环保材料有限责任公司 | Preparation method of environment-friendly coal gangue-based hollow brick |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071098A (en) * | 1991-09-28 | 1993-04-21 | 清华大学 | A kind of method that improves desulfation efficincy of combustion equipment |
| CN1190118A (en) * | 1998-03-04 | 1998-08-12 | 李庆华 | Energy-saving desulphurizing catalyst for fuel coal |
-
2000
- 2000-12-20 CN CN00129430A patent/CN1098919C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107513451A (en) * | 2017-07-10 | 2017-12-26 | 管理 | A kind of stalk coal stone talc particles formula of magnesium catalytic combustion-supporting comprehensive energy boiler |
| CN111056817A (en) * | 2020-02-25 | 2020-04-24 | 和县明生环保材料有限责任公司 | Preparation method of environment-friendly coal gangue-based hollow brick |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1098919C (en) | 2003-01-15 |
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| CF01 | Termination of patent right due to non-payment of annual fee |