CN1806910A - Preparation method of flue gas treatment active coke and flue gas treatment active coke prepared thereby - Google Patents
Preparation method of flue gas treatment active coke and flue gas treatment active coke prepared thereby Download PDFInfo
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- CN1806910A CN1806910A CN 200510132628 CN200510132628A CN1806910A CN 1806910 A CN1806910 A CN 1806910A CN 200510132628 CN200510132628 CN 200510132628 CN 200510132628 A CN200510132628 A CN 200510132628A CN 1806910 A CN1806910 A CN 1806910A
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Abstract
The invention provides the smoke gas treatment active coke and preparing method. The method comprises the following steps: preparing coal powder: squashing 10-55% gas coal, 5-50% pulverized coke, 20-30% coking coal and 10-20% asphalt to less than 12mm particles with grinder; then putting them into milling machine, and adding 1-2% one or two of NH4Cl, urea, KOH, KCl, NaCl and NaOH, rubbing; putting them into pair roller forming machine whose press is 5.0-500.0MPa to form particles; then putting them into oxidation oven whose temperature is 200-400Deg.C for 1-3 hours; putting them into retort at 750-850Deg.C for 1-3 hours; putting them into activating oven at 950-1000Deg.C for 4-30 hours with 0.25-0.8MPa aqueous vapor; then putting them into oxidation oven at 300-500Deg.C for one hour with air. Using the method, the cost is low, the effects of desulfurization and denitration are improved, the intensity is good and the lifetime is long.
Description
Technical field
The present invention relates to a kind of production method of activated charcoal, relate in particular to a kind of production method of smoke gas treatment activated coke, also relate to smoke gas treatment activated coke with this method preparation.
Background technology
Make steam power plant's dry desulfurization device in recent years and formed multiple production technology both at home and abroad with the activated charcoal that removes sulfur dioxide and nitrogen oxide (being called for short the smoke gas treatment activated coke).Germany BF company adopts the brown coal abrasive dust to add the adhesive moulding, forms coke powder through charing and is used for steam power plant's dry desulfurization device.Sino-Chinese Shipping Association BJ Office has formed coal and has formed coke powder through low temperature distillation, mixes with the adhesive heating behind the abrasive dust, and moulding is after destructive distillation, activation formation activated charcoal.Through abrasive dust, mix after China's Shanxi Xinhua Chemical Plant has formed and used bituminous coal and coking coal cooperates, be shaped to strip particle, make the smoke gas treatment activated coke through charing, activation, oxidation by liquefaction with coal tar.Adopt method for preparing smoke gas treatment activated coke cost higher; Prepared smoke gas treatment activated coke exists desulfurization off sulfide effect good inadequately; Same volume (volume) heap down is heavy less; Intensity is less, easily abrasion; Shortcomings such as service life is short partially.
Summary of the invention
The invention provides a kind of preparation method of smoke gas treatment activated coke and the smoke gas treatment activated coke of preparation thereof.Adopt the smoke gas treatment activated coke cost of the present invention's preparation lower; The desulfurization off sulfide effect of prepared smoke gas treatment activated coke improves; Same volume (volume) heap down heavily increases; Intensity is good, is difficult for abrasion; Long service life, thus overcome preparation smoke gas treatment activated coke existing methods shortcoming.
The preparation method of smoke gas treatment activated coke of the present invention, its step is as follows:
1) preparation coal dust:,
(1) component of coal dust and percentage by weight thereof consist of:
Bottle coal 10-55%,
Coke powder 5-50%,
Coking coal 20-30%,
Pitch 10-20%,
NH
4One of Cl, urea, KOH, KCl, NaCl, NaOH or any two kinds combination 1-2%;
The preferred weight percent of the following component of coal dust consists of:
Bottle coal 10-40%,
Coke powder 10-45%,
(2) preparation coal dust: required bottle coal, coke powder, coking coal, pitch are broken into particle less than 12mm respectively with disintegrating machine; Put into grinder then, add required NH again
4One of Cl, urea, KOH, KCl, NaCl, NaOH or any two kinds combination grind to form 180-400 purpose powder;
2) molding, granulating: above-mentioned coal dust is sent in the roller briquetting machine that pressure is 5.0-500.0MPa, made graininess, coating of particles can be sphere, almond shape, olive shape or ellipse; Preferred pressure is 5.0-400.0MPa in the roller briquetting machine;
3) preceding oxidation modification: it is in 200-400 ℃ the oxidation furnace oxidation 1-3 hour that above-mentioned shaped granule is added temperature, oxidation material before making; Preferred temperature is 200-350 ℃ in the oxidation furnace;
4) charing: oxidation material before above-mentioned was added in the retort of 750-850 ℃ of temperature charing 1-3 hour, and made carbonized material;
5) activation: above-mentioned carbonized material is added in the activation furnace of 950-1000 ℃ of temperature, use 0.25-0.8MPa steam activation 4-30 hour, make activated material; The preferred pressure of steam is 0.25-0.6MPa, and the preferred time of activation is 4-20 hour;
6) rear oxidation modification: above-mentioned activated material is sent into the air oxidation of rear oxidation stove, and temperature is 300-500 ℃, and the smoke gas treatment activated coke is promptly made in oxidation 1 hour.
The present invention adopts bottle coal, coke powder, coking coal, chemical addition agent to cooperate with pitch, be almond shape, ellipse, spherical, olive shape particle through roller press briquetting behind the abrasive dust, make the smoke gas treatment activated coke through preceding oxidation modification, charing, activation, rear oxidation modification.The present invention utilizes semicoke byproduct coke powder, raw coal adopts the high-volatile bottle coal, strengthened granule strength by coking coal and pitch, reduced the energy consumption of carbonization process, improve efficient, not only reduced cost, and the easier realization of temperature control, carbonization temperature can be controlled in＞and 850 ℃, activation temperature is controlled at＞and 950 ℃.The present invention has adopted preceding oxidation modification and rear oxidation modified technique.Preceding oxidation modification has reduced the crackle of particle, and the rear oxidation modification has improved the denitrifying oxide performance of product.The present invention has also adopted by chemical adding means, matches with temperature control, with control and adjustment activated charcoal surfaces externally and internally functional group, has improved desulfurization off sulfide effect greatly.
The specific embodiment
Adopt the smoke gas treatment active coke desulphurizing denitration effect of the present invention's preparation to improve 30%; Same volume (volume) heap down heavily increases; Intensity is good, is difficult for abrasion; Long service life.
Embodiment 1
140 kilograms of 550 kilograms of bottle coals, 50 kilograms of coke powders, 250 kilograms of coking coals, pitch are broken into particle less than 12mm respectively with disintegrating machine; Put into grinder then, add 10 kilograms of NH again
4Cl grinds to form 180-400 purpose powder; Powder is sent in the roller briquetting machine that pressure is 5.0MPa again, be pressed into φ 10mm spheric granules; Send in 350 ℃ the oxidation furnace preceding oxidation 1 hour, oxidation material before making again; Preceding oxidation material is sent in 750 ℃ the retort, carbonized material is made in charing 3 hours again; Again carbonized material is sent in the vertical activation furnace, under 950 ℃, made activated material in 12 hours with the 0.25MPa steam activation; Send into the rear oxidation stove under 500 ℃,, make the smoke gas treatment activated coke with air oxidation 1 hour.
Embodiment 2
100 kilograms of 400 kilograms of bottle coals, 190 kilograms of coke powders, 300 kilograms of coking coals, pitch are broken into particle less than 12mm respectively with disintegrating machine; Put into grinder then, add 10 kilograms of urea again, grind to form 180-400 purpose powder; Powder is sent in the roller briquetting machine that pressure is 500.0MPa again, be pressed into the oval particle of φ 13 * 11 * 8mm; Send in 260 ℃ the oxidation furnace preceding oxidation 3 hours, oxidation material before making again; Preceding oxidation material is sent in 800 ℃ the retort, carbonized material is made in charing 1.5 hours again; Again carbonized material is sent in the vertical activation furnace, under 1000 ℃, made activated material in 4 hours with the 0.8MPa steam activation; Send into the rear oxidation stove under 300 ℃,, make the smoke gas treatment activated coke with air oxidation 1 hour.
Embodiment 3
200 kilograms of 500 kilograms of bottle coals, 100 kilograms of coke powders, 190 kilograms of coking coals, pitch are broken into particle less than 12mm respectively with disintegrating machine; Put into grinder then, add 3 kilograms of NaOH, 7 kilograms of urea again, grind to form 180-400 purpose powder; Powder is sent in the roller briquetting machine that pressure is 180.0MPa again, be pressed into φ 11 * 8mm almond shape particle; Send in 200 ℃ the oxidation furnace preceding oxidation 1.75 hours, oxidation material before making again; Preceding oxidation material is sent in 850 ℃ the retort, carbonized material is made in charing 1 hour again; Again carbonized material is sent in the vertical activation furnace, under 950 ℃, made activated material in 20 hours with the 0.6MPa steam activation; Send into the rear oxidation stove under 400 ℃,, make the smoke gas treatment activated coke with air oxidation 1 hour.
Embodiment 4
110 kilograms of 170 kilograms of bottle coals, 500 kilograms of coke powders, 200 kilograms of coking coals, pitch are broken into particle less than 12mm respectively with disintegrating machine; Put into grinder then, add 10 kilograms of NH again
4Cl, 10 kilograms of KOH grind to form 180-400 purpose powder; Powder is sent in the roller briquetting machine that pressure is 400.0MPa again, be pressed into φ 13 * 11 * 8mm olive shape particle; Send in 400 ℃ the oxidation furnace preceding oxidation 1.5 hours, oxidation material before making again; Preceding oxidation material is sent in 780 ℃ the retort, carbonized material is made in charing 1.5 hours again; Again carbonized material is sent in the vertical activation furnace, under 950 ℃, made activated material in 30 hours with the 0.4MPa steam activation; Send into the rear oxidation stove under 450 ℃,, make the smoke gas treatment activated coke with air oxidation 1 hour.
Claims (6)
1. method for preparing the smoke gas treatment activated coke, its step is as follows:
1) preparation coal dust:
(1) component of coal dust and percentage by weight thereof are formed:
Bottle coal 10-55%,
Coke powder 5-50%,
Coking coal 20-30%,
Pitch 10-20%,
NH
4One of Cl, urea, KOH, KCl, NaCl, NaOH or any two kinds combination 1-2%;
(2) preparation coal dust: required bottle coal, coke powder, coking coal, pitch are broken into particle less than 12mm respectively with disintegrating machine; Put into grinder then, add required NH again
4One of Cl, urea, KOH, KCl, NaCl, NaOH or any two kinds combination grind to form 180-400 purpose powder;
2) molding, granulating: above-mentioned coal dust is sent in the roller briquetting machine that pressure is 5.0-500.0MPa, made graininess;
3) preceding oxidation modification: it is in 200-400 ℃ the oxidation furnace oxidation 1-3 hour that above-mentioned shaped granule is added temperature, oxidation material before making;
4) charing: oxidation material before above-mentioned was added in the retort of 750-850 ℃ of temperature charing 1-3 hour, and made carbonized material;
5) activation: above-mentioned carbonized material is added in the activation furnace of 950-1000 ℃ of temperature, use 0.25-0.8MPa steam activation 4-30 hour, make activated material;
6) rear oxidation modification: above-mentioned activated material is sent into the air oxidation of rear oxidation stove, and the smoke gas treatment activated coke was made in temperature oxidation when (300-500) ℃ in 1 hour.
2. according to the described method for preparing the smoke gas treatment activated coke of claim 1, it is characterized in that the percentage by weight of the following component of coal dust consists of in the preparation coal dust step:
Bottle coal 10-40%,
Coke powder 10-45%.
3. according to the described method for preparing the smoke gas treatment activated coke of claim 2, it is characterized in that molding, granulating: above-mentioned coal dust is sent in the roller briquetting machine that pressure is 5.0-400.0MPa; The coating of particles of making is sphere, almond shape, olive shape or ellipse.
4. according to the described method for preparing the smoke gas treatment activated coke of claim 3, it is characterized in that the temperature of oxidation furnace is 200-350 ℃ in the preceding oxidation modification step.
5. according to the described method for preparing the smoke gas treatment activated coke of claim 5, it is characterized in that in the activation step, the pressure of steam is 0.25-0.6MPa, the time of activation is 4-20 hour.
6. according to the described smoke gas treatment activated coke for preparing the method preparation of smoke gas treatment activated coke of one of claim 1-5.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805626A (en) * | 2010-04-19 | 2010-08-18 | 洛阳龙羽圣扬投资有限公司 | Automatic production line for making charcoal from wood and production process |
| CN101812309A (en) * | 2010-04-20 | 2010-08-25 | 西安三瑞实业有限公司 | Method for preparing coal-based carbonized material used for preparing active carbon |
| CN103224235A (en) * | 2013-05-13 | 2013-07-31 | 山东大学 | Process and device for quickly preparing powdered active coke for desulfurization by utilizing pulverized coal |
| CN104787763A (en) * | 2015-04-10 | 2015-07-22 | 山西大学 | Preparation method for activated coke powder for carbon fuel cell |
| CN109806839A (en) * | 2019-03-29 | 2019-05-28 | 平罗县国宁活性炭有限公司 | A kind of activated coke preparation method |
| CN111013378A (en) * | 2019-11-20 | 2020-04-17 | 北京首钢国际工程技术有限公司 | Purifying agent for complex pellet flue gas |
| CN113198523A (en) * | 2021-05-19 | 2021-08-03 | 一重集团大连工程建设有限公司 | Preparation method of efficient flue gas desulfurization and denitrification catalyst |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4855116A (en) * | 1985-04-03 | 1989-08-08 | Bergwerksverband Gmbh | Activated coke method of removing nitrogen oxides from exhaust gases |
| CN1032056C (en) * | 1992-11-10 | 1996-06-19 | 昆明煤炭科学研究所 | Method for producing high quality brown coal base active carbon |
| CN1052703C (en) * | 1994-10-18 | 2000-05-24 | 宁夏回族自治区化工设计研究院 | Coal-produced active carbon as fluidized bed carrier and its production method |
| CN1112952A (en) * | 1994-12-22 | 1995-12-06 | 何国威 | Coking by one's self with one third of coke and coke powder to produce high quality metallurgical coke and metallurgical casting coke |
| CN1094150C (en) * | 2000-07-14 | 2002-11-13 | 张学礼 | Method for producing high grade coke |
| CN1560195A (en) * | 2004-03-12 | 2005-01-05 | 李玉林 | Production method of formed coke using coking powder as row-material and special formed coke furnace |
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2005
- 2005-12-23 CN CNB2005101326288A patent/CN100364659C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805626A (en) * | 2010-04-19 | 2010-08-18 | 洛阳龙羽圣扬投资有限公司 | Automatic production line for making charcoal from wood and production process |
| CN101812309A (en) * | 2010-04-20 | 2010-08-25 | 西安三瑞实业有限公司 | Method for preparing coal-based carbonized material used for preparing active carbon |
| CN101812309B (en) * | 2010-04-20 | 2012-12-26 | 西安三瑞实业有限公司 | Method for preparing coal-based carbonized material used for preparing active carbon |
| CN103224235A (en) * | 2013-05-13 | 2013-07-31 | 山东大学 | Process and device for quickly preparing powdered active coke for desulfurization by utilizing pulverized coal |
| CN103224235B (en) * | 2013-05-13 | 2015-07-29 | 山东大学 | A kind of coal dust that utilizes prepares the desulfurization technique of powder activated Jiao and device fast |
| CN104787763A (en) * | 2015-04-10 | 2015-07-22 | 山西大学 | Preparation method for activated coke powder for carbon fuel cell |
| CN109806839A (en) * | 2019-03-29 | 2019-05-28 | 平罗县国宁活性炭有限公司 | A kind of activated coke preparation method |
| CN109806839B (en) * | 2019-03-29 | 2022-01-28 | 平罗县国宁活性炭有限公司 | Preparation method of active coke |
| CN111013378A (en) * | 2019-11-20 | 2020-04-17 | 北京首钢国际工程技术有限公司 | Purifying agent for complex pellet flue gas |
| CN113198523A (en) * | 2021-05-19 | 2021-08-03 | 一重集团大连工程建设有限公司 | Preparation method of efficient flue gas desulfurization and denitrification catalyst |
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| CN100364659C (en) | 2008-01-30 |
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