CN1206092A - Preparation of sulfur-fixing waterproof boiler briquette - Google Patents

Preparation of sulfur-fixing waterproof boiler briquette Download PDF

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Publication number
CN1206092A
CN1206092A CN 97113356 CN97113356A CN1206092A CN 1206092 A CN1206092 A CN 1206092A CN 97113356 CN97113356 CN 97113356 CN 97113356 A CN97113356 A CN 97113356A CN 1206092 A CN1206092 A CN 1206092A
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CN
China
Prior art keywords
fixing
sulfur
agent
sulphur
briquette
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Granted
Application number
CN 97113356
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Chinese (zh)
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CN1081226C (en
Inventor
宋永玮
李新生
魏延富
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Shanxi Institute of Coal Chemistry of CAS
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Shanxi Institute of Coal Chemistry of CAS
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Priority to CN 97113356 priority Critical patent/CN1081226C/en
Publication of CN1206092A publication Critical patent/CN1206092A/en
Application granted granted Critical
Publication of CN1081226C publication Critical patent/CN1081226C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

By using coal or coke as main material and adding calcium compound as sulfur-fixing agent; hydroxide, chloride, nitrate and carbonate of K and Na, nitrate of Ba and Sr, and ferric oxide as comburant; acrylate as waterproofing agent; and adhesive prepared using potato residue as main material, the present invention produces briquette through the processes of mixing, kneading, cold pressing to form and stoving. The present invention has the features of rich resource, low cost, simple production process, low ignition temperature, full combustion and high sulfur-fixing and waterproof effect, and is suitable for producing boiler briquette and gasified birquette.

Description

A kind of preparation method of sulfur-fixing waterproof boiler briquette
The invention belongs to the preparation method of moulded coal, relate in particular to a kind of preparation method of sulfur-fixing waterproof boiler briquette.
At present, domestic sulfur-fixing briquet for boiler or waterproof boiler briquette though certain solid sulphur or water resistance are arranged, exist ignition delay, incomplete combustion or cost height, shortcoming that performance is single.After the moulded coal surface had coated one deck sulphur-fixing agent, total sulfur-fixing rate can reach 63.5% as Chinese patent ZL 88108858, but because sulphur-fixing agent is an inorganic matter, the difficult point combustion so aggravated the shortcoming of moulded coal ignition lag, has reduced the thermal efficiency of boiler.Chinese patent CN 86101384 and CN 1057069 have added the Pioloform, polyvinyl acetal binding agent in moulded coal, the moulded coal water resistance is improved, but polyvinyl alcohol in recent years price rise at double, so cost is too high, is difficult to adopt.
It is low that goal of the invention of the present invention provides a kind of cost, the after-flame that easily catches fire, and have the preparation method of the boiler briquette of solid sulphur, waterproof action simultaneously.
The object of the present invention is achieved like this, is to be raw material with coal dust or coke blacking, adds sulphur-fixing agent, combustion adjuvant, waterproofing agent and binding agent through mixing, mix pinch, cold moudling, oven dry makes product.
Preparation method of the present invention is as follows:
(1) coal or coke blacking are broken to less than 3mm,
(2) above-mentioned coal dust or coke powder after crushed mixes by a certain percentage with sulphur-fixing agent, combustion adjuvant, waterproofing agent, binding agent, and stir and mix and pinch evenly,
(3) with mixture cold moudling, oven dry obtains product,
The proportioning (percetage by weight) that it is characterized in that coal dust or coke powder and sulphur-fixing agent, combustion adjuvant, waterproofing agent, binding agent is:
Coal dust or coke powder 75-86
Sulphur-fixing agent 3-16
Combustion adjuvant 0.1-1.0
Waterproofing agent 0.01-0.5
Binding agent 8-20
Aforesaid sulphur-fixing agent is the calcium based compound, lime, carbide slag, hydrated lime, dolomite.
Aforesaid combustion adjuvant is NaNO 3, NaOH, Na 2CO 3, NaCl, KNO 3, KOH, K 2CO 3, KCl, Ba (NO 3) 2, Sr (NO 3) 2, SrCO 3, Fe 2O 3
Aforesaid waterproofing agent is an acrylate paint.
Aforesaid binding agent be a kind of be the pastel that Main Ingredients and Appearance is made with the potato flour dregs that extracts behind the starch, it consists of (percentage by weight):
Potato flour dregs powder (butt) 10-30
Water 50-85
Alkali or sour 0.1-1.5
The potato flour dregs pasty adhesive can prepare as follows: will extract granulated slag drying behind the starch and wear into powder less than 20 mesh sieves to water content<20%, mix with the NaOH solution of the 0.3-1.0% (weight) of 2-7 part weight by the granulated slag of 1 part of weight, be heated to 55-65 ℃ of about 5-10 minute one-tenth pasty state while stirring.Perhaps the granulated slag of 1 part of weight mixes with the water of 3-6 part weight, is heated to 55-65 ℃ while stirring, behind the about 5-10 minute one-tenth pasty state, adds the heavy concentrated sulfuric acid of 0.01-0.06 part again, and stirs.Also available other inorganic base of the NaOH wherein and the concentrated sulfuric acid and acid substitution.
The addition of aforesaid sulphur-fixing agent be in the sulphur-fixing agent in calcium content and raw material coal dust or the coke powder ratio of sulfur content be 1.5-4.0.
Compared with the prior art the present invention has following advantage:
1. aboundresources is inexpensive, low cost of manufacture;
2. technology is simple, easily makes;
3. ignition temperature is low, easy to burn out;
4. sulfur-fixing waterproof is effective.
The present invention is applicable to the manufacturing boiler briquette, also can make gasification briquette.
Embodiments of the invention are as follows:
Embodiment 1
A. prepare binding agent, the sweet potato powder sizing of moisture<20% is become powder less than 20 mesh sieves, mix with the NaOH solution of the 0.3-1.0% (weight) of 5 parts of weight, be heated to 55-65 ℃ while stirring by the granulated slag of 1 part of weight, about 5-10 minute one-tenth pasty state,
B. in 76% Hejin high-sulfur bituminous coal (full sulphur 3.23%), be 1.9, add 13.5% carbide slag (containing CaO 60.5%), add 0.1%NaNo simultaneously by calcium sulfur ratio 3The combustion adjuvant of 0.3%NaOH, 0.1% acrylate flood coat agent, 10% binding agent mixes back cold moudling, oven dry makes product, measurement result is compression strength 500N/, drop strength 93.0%, and water proofing property (soak in water keep that original shape do not loose time with) was greater than 30 days, 62-65% 80.2%, 1100 ℃ time during 1000 ℃ of total sulfur-fixing rates.
Embodiment 2
Be 3 by calcium sulfur ratio in the coke powder 80% (full sulphur 1%), add 5.6% lime (containing CaO 75%), add 1.0% sodium carbonate and 0.1%KNO simultaneously 3Combustion adjuvant, 0.3% acrylate flood coat agent, 13% binding agent mix the back cold moudling, embodiment 1 in all the other.Measurement result is compression strength 450N/, drop strength 95.5%, and water proofing property (soaking the time that keeps original shape not loose in water) is greater than 30 days, 62-60% 83%, 1100 ℃ time during 1000 ℃ of total sulfur-fixing rates.
Embodiment 3
Be 1.6 by calcium sulfur ratio in the Hejin high-sulfur bituminous coal 75% (full sulphur 3.23%), add 10.9% hydrated lime (containing CaO 62%), 0.1%NaNO 3And the combustion adjuvant of 0.1%NaCl, 0.1% acrylate flood coat agent, 13.8% binding agent mixes aftershaping, and oven dry makes product, and all the other are with embodiment 1.Measurement result is compression strength 600N/, drop strength 95%, and water proofing property (soaking the time that keeps original shape not loose in water) is greater than 30 days, 62-64% 80.2%, 1100 ℃ time during 1000 ℃ of total sulfur-fixing rates.
Embodiment 4
Combustion adjuvant is changed into 0.4%KNO 3, all the other are with embodiment 1.Measurement result is compression strength 500N/, drop strength 93.0%, and water proofing property (soaking the time that keeps original shape not loose in water) is greater than 30 days, 62-60% 80.2%, 1100 ℃ time during 1000 ℃ of total sulfur-fixing rates.
Embodiment 5
Combustion adjuvant is changed into 0.2%KNO 3And 0.2%NaCl, all the other are with embodiment 1.Measurement result is compression strength 480N/, drop strength 92%, and water proofing property (soaking the time that keeps original shape not loose in water) is greater than 30 days, 62-65% 80.2%, 1100 ℃ time during 1000 ℃ of total sulfur-fixing rates.
Embodiment 6
Combustion adjuvant is changed into 0.2%Ba (NO 3) 2And 0.2%NaOH, all the other are with embodiment 1.Measurement result is compression strength 500N/, drop strength 93.0%, and water proofing property (soaking the time that keeps original shape not loose in water) is greater than 30 days, 63-66% 82.2%, 1100 ℃ time during 1000 ℃ of total sulfur-fixing rates.
Embodiment 7
Combustion adjuvant is changed into 0.2%Sr (NO 3) 2And 0.2%NaOH, all the other are with embodiment 1.Measurement result is compression strength 510N/, drop strength 94.0%, and water proofing property (soaking the time that keeps original shape not loose in water) is greater than 30 days, 62-60% 79.0%, 1100 ℃ time during 1000 ℃ of total sulfur-fixing rates.
Embodiment 8
Combustion adjuvant is changed into 0.3%Fe 2O 3And 0.1%NaOH, all the other are with embodiment 1.Measurement result is compression strength 500N/, drop strength 93.5%, and water proofing property (soaking the time that keeps original shape not loose in water) is greater than 30 days, 62-60% 80.2%, 1100 ℃ time during 1000 ℃ of total sulfur-fixing rates.

Claims (6)

1. the preparation method of a sulfur-fixing waterproof boiler briquette comprises:
(1) coal or coke blacking are broken to less than 3mm.
(2) above-mentioned coal dust or coke powder after crushed mixes by a certain percentage with sulphur-fixing agent, combustion adjuvant, waterproofing agent, binding agent, stir,
(3) with mixture cold moudling, oven dry obtains product,
The proportioning (percentage by weight) that it is characterized in that coal dust or coke powder and sulphur-fixing agent, combustion adjuvant, waterproofing agent, binding agent is:
Coal dust or coke powder 75-86
Sulphur-fixing agent 3-16
Combustion adjuvant 0.1-1.0
Waterproofing agent 0.01-0.5
Binding agent 8-20
2. the preparation method of a kind of sulfur-fixing waterproof boiler briquette according to claim 1 is characterized in that described sulphur-fixing agent is the calcium based compound.
3. the preparation method of a kind of sulfur-fixing waterproof boiler briquette according to claim 2 is characterized in that described calcium based compound is lime, carbide slag, hydrated lime, dolomite.
4. the preparation method of a kind of sulfur-fixing waterproof boiler briquette according to claim 1 is characterized in that described combustion adjuvant is NaNO 3, NaOH, Na 2CO 3, NaCl, KOH, KNO 3, K 2CO 3, KCl, Ba (NO 3) 2, Sr (NO 3) 2, SrCO 3, Fe 2O 3
5. the preparation method of a kind of sulfur-fixing waterproof boiler briquette according to claim 1 is characterized in that described waterproofing agent is an acrylate paint.
6. the preparation method of a kind of sulfur-fixing waterproof boiler briquette according to claim 1, the addition that it is characterized in that described sulphur-fixing agent be in raw material coal dust or the coke powder in sulfur content and the sulphur-fixing agent ratio of calcium content be 1.5-4.0.
CN 97113356 1997-07-21 1997-07-21 Preparation of sulfur-fixing waterproof boiler briquette Expired - Fee Related CN1081226C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 97113356 CN1081226C (en) 1997-07-21 1997-07-21 Preparation of sulfur-fixing waterproof boiler briquette

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 97113356 CN1081226C (en) 1997-07-21 1997-07-21 Preparation of sulfur-fixing waterproof boiler briquette

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CN1206092A true CN1206092A (en) 1999-01-27
CN1081226C CN1081226C (en) 2002-03-20

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008046254A1 (en) * 2006-10-11 2008-04-24 Beijing Kirinstar Co., Ltd A coal briquette used for gasification, process for producing the same and use thereof
CN101348741B (en) * 2007-07-19 2012-04-25 北京科兰之星环保科技有限公司 Boiler molded coal and preparation thereof
CN103627460A (en) * 2012-08-29 2014-03-12 甘肃凯龙淀粉有限公司 Potato residue honeycomb briquette and production method thereof
CN105542822A (en) * 2016-02-24 2016-05-04 太原理工大学 Hematite composite additive for reducing civil coke ignition temperature, preparing method and application
CN105567272A (en) * 2016-02-24 2016-05-11 太原理工大学 Calcium-based barium manganese aluminum composite additive for improving high-temperature sulfur fixation effect of civilian coke and preparation method and application
CN105602640A (en) * 2016-02-24 2016-05-25 太原理工大学 Potassium feldspar composite additive for reducing ignition temperature of civil coke and preparing method and application
CN107880954A (en) * 2017-11-16 2018-04-06 蒙娜丽莎集团股份有限公司 It is coal-fired that with compound sulphur-fixing agent, in compound solid sulphur water-coal-slurry and stove, companion bakes sulphur method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008046254A1 (en) * 2006-10-11 2008-04-24 Beijing Kirinstar Co., Ltd A coal briquette used for gasification, process for producing the same and use thereof
CN101348741B (en) * 2007-07-19 2012-04-25 北京科兰之星环保科技有限公司 Boiler molded coal and preparation thereof
CN103627460A (en) * 2012-08-29 2014-03-12 甘肃凯龙淀粉有限公司 Potato residue honeycomb briquette and production method thereof
CN105542822A (en) * 2016-02-24 2016-05-04 太原理工大学 Hematite composite additive for reducing civil coke ignition temperature, preparing method and application
CN105567272A (en) * 2016-02-24 2016-05-11 太原理工大学 Calcium-based barium manganese aluminum composite additive for improving high-temperature sulfur fixation effect of civilian coke and preparation method and application
CN105602640A (en) * 2016-02-24 2016-05-25 太原理工大学 Potassium feldspar composite additive for reducing ignition temperature of civil coke and preparing method and application
CN105542822B (en) * 2016-02-24 2018-09-14 太原理工大学 The bloodstone compound additive and preparation method of reduction domestic coke ignition temperature and application
CN105567272B (en) * 2016-02-24 2018-09-14 太原理工大学 The calcium base barium manganese aluminium compound additive and preparation method of raising domestic coke high-temperature fixed sulfur effect and application
CN105602640B (en) * 2016-02-24 2018-09-14 太原理工大学 The potassium feldspar compound additive and preparation method of reduction domestic coke ignition temperature and application
CN107880954A (en) * 2017-11-16 2018-04-06 蒙娜丽莎集团股份有限公司 It is coal-fired that with compound sulphur-fixing agent, in compound solid sulphur water-coal-slurry and stove, companion bakes sulphur method
CN107880954B (en) * 2017-11-16 2019-10-15 蒙娜丽莎集团股份有限公司 Companion bakes sulphur method in the compound sulphur-fixing agent of fire coal, compound solid sulphur water-coal-slurry and furnace

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