CN1107878A - Gasifying briquette for chemical fertilizer - Google Patents
Gasifying briquette for chemical fertilizer Download PDFInfo
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- CN1107878A CN1107878A CN 94101474 CN94101474A CN1107878A CN 1107878 A CN1107878 A CN 1107878A CN 94101474 CN94101474 CN 94101474 CN 94101474 A CN94101474 A CN 94101474A CN 1107878 A CN1107878 A CN 1107878A
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- coal
- moulded
- chemical fertilizer
- sodium hydroxide
- semen maydis
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Abstract
The gasifying briquet for production of chemical fertilizer or ordinary gas generator is made of powdered anthracite, composite cementing agent (corn starch and sodium hydroxide) and viscose coal sludge as waste from coal-washing yard, and features less ash content, increased ash smelting point, low cost, high thermal stability and strength, and water resistance.
Description
The present invention relates to a kind of moulded coal, be particularly suitable for chemical fertilizer gas-making and common producer system gas.
At present, anthracite block coal is the desirable feedstock of fertilizer plant's water-gas generators gas making, however the raising of mining mechanization degree, the lump coal productive rate descends, and only about 10%.90 years China's hard coal output is about 200,000,000 tons according to statistics, and wherein lump coal yield only is 2,000 ten thousand tons, and China's chemical fertilizer with anthracite block coal about 3,500 ten thousand tons/year does not also comprise the chemical fertilizer amount of coke, and obviously supply falls short of demand for anthracite block coal, causes anthracite fine coal to overstock in a large number simultaneously.Therefore it is fertile significant with moulded coal to develop anthracite fine coal moulding inhibition and generation.The lime-carbonated coal balls that present fertilizer plant widely uses needs allocate into the lime of 20-30% in coal, the ash content that makes moulded coal is up to 40-50%, even the fixed carbon content of moulded coal less than 50% also, all bring difficulty for gasification operation and Ammonia Production, also must carry out carbonizing treatment simultaneously, increased the cost of moulded coal, and made process complications.
The purpose of this invention is to provide a kind of chemical fertilizer gasification briquette, the moulded coal ash oontent that processing is obtained is equivalent to the anthracitic ash oontent of moulding, and its ash fusion point is improved, and reaches the coal for gasification requirement.
The object of the present invention is achieved like this: with the anthracite fine coal is the shaping raw material coal, allocates compound binding agent (Semen Maydis powder and sodium hydroxide) and cohesiveness coal slime into and makes.
The effect of cohesiveness coal slime in moulded coal mainly is the thermostability that improves moulded coal, chemical fertilizer with moulded coal except that requiring enough cold strengths, (general moulded coal hot strength is greater than the 20kg/ ball also to require to have certain thermostability and hot strength, thermostability is greater than 85%, can satisfy the coal for gasification requirement), be that raw material adds an amount of organic binder bond or based on the compound binding agent of organic binder bond, can obtain the higher moulded coal of cold strength with the anthracite fine coal.But the hot strength of this kind moulded coal has only about the 10kg/ ball, thermostability is also very poor, can not satisfy the requirement of chemical fertilizer with moulded coal, therefore must add a certain proportion of mineral binder bond, could guarantee the hot strength of moulded coal as clay, lime etc., so just increase the ash content of moulded coal, reduced caloric power of gas.The present invention improves the thermostability of moulded coal with adding the cohesiveness coal slime because the cohesiveness coal slime belongs to the coal class, its ash oontent a little more than or be equivalent to the anthracitic ash oontent of moulding, allocating the ash content increase that makes moulded coal in the moulded coal into seldom or does not substantially increase.Cohesiveness coal slime addition is high more, the moulded coal hot strength is high more, but the fugitive constituent of moulded coal also can increase thereupon, can not satisfy the requirement of chemical fertilizer with moulded coal equally if fugitive constituent surpasses 10%, and the amount of allocating into of the cohesiveness coal slime of medium fugitive constituent is generally the 10-20%(weight percent for this reason).The ash fusion point that the cohesiveness coal slime is arranged again is generally all greater than 1500 ℃, if adopt the coal powder formation of low ash smelting point, the moulded coal ash fusion point does not generally reach chemical fertilizer coal requirement, and the present invention adds the ash fusion point that the cohesiveness coal slime has significantly improved moulded coal.
The ratio of compound binding agent Semen Maydis powder and sodium hydroxide is 1: the 0.1(weight ratio), the best amount of allocating into is the 1-1.5%(weight percent), Semen Maydis powder can replace with rice meal or starch.
The present invention is owing to adopted the waste-coal slime of coal washery, not only help utilization of waste material but also the ash content increase of moulded coal seldom or is not substantially increased, and significantly improved the ash fusion point of moulded coal, and moulding process is simple, binding agent is inexpensive, the cold strength height of moulded coal, waterproof, and be easy to store and transportation.
The invention will be further described below in conjunction with embodiment:
Embodiment 1: take by weighing 88.9 parts of anthracite fine coals (Mentougou coal), add compound binding agent (1 part of Semen Maydis powder, 0.1 part in sodium hydroxide), add 10 parts of bituminous coal coal slimes again, after stirring, total moisture content of compound is controlled at 10%, the mixture that mixes sent into is pressed into coal briquette (coal cinder) in the common roller briquetting machine, wet bulb in 60 ℃ dry 2 hours down, again 120 ℃ dry 2-3 hour down, cold strength is a 64.3kg/ ball after measured, hot strength is greater than 100kg/ ball, and thermostability is greater than 90%, and it is not cracked more than 24 hours to put into water, again after the oven dry, recover original intensity.Fine coal ash content 24.96% before the moulding, moulded coal ash content 25.84% after the moulding.
Embodiment 2: the coal 77.8%(of ripples Shao Jin Zhushan County weight percent), Semen Maydis powder 2%, sodium hydroxide 0.2%, bituminous coal mud 20%, complete processing is with embodiment 1, the cold strength 55kg/ of a moulded coal ball, thermostability 98.6%, water-repellancy is the same.Fine coal ash content 21.41% before the moulding, moulded coal ash content 21.39% after the moulding.
Embodiment 3: ripples Shao Chaoyang pit coal 83.35%(weight percent), Semen Maydis powder 1.5%, sodium hydroxide 0.15%, bituminous coal mud 15%, complete processing is with embodiment 1, the cold strength 73kg/ of a moulded coal ball, thermostability 91.3%, water-repellancy is the same.Fine coal ash content 30.37% before the moulding, moulded coal ash content 28.36% after the moulding.
Embodiment 4: Ningxia fern ditch hard coal ash fusion point is 1140 ℃ of requirements less than coal for gasification ash fusion point (＞1250 ℃), allocate into during moulding ash fusion point greater than 1500 ℃ cohesiveness coal slime after, make the moulded coal ash fusion point reach 1250 ℃.
Claims (3)
1, a kind of chemical fertilizer gasification briquette is characterized in that with the anthracite fine coal being the shaping raw material coal, allocates compound binding agent (Semen Maydis powder and sodium hydroxide) and cohesiveness coal slime into and makes.
2, moulded coal according to claim 1, the content that it is characterized in that described compound binding agent Semen Maydis powder and sodium hydroxide is 0.5-2%, the content of cohesiveness coal slime is the 10-20%(weight percent).
3, according to claim 1 and 2 described moulded coals, the ratio that it is characterized in that described compound binding agent Semen Maydis powder and sodium hydroxide is 1: the 0.1(weight ratio), the best amount of allocating into is the 1-1.5%(weight percent), Semen Maydis powder can replace with rice meal or starch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94101474 CN1039131C (en) | 1994-03-02 | 1994-03-02 | Gasifying briquette for chemical fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94101474 CN1039131C (en) | 1994-03-02 | 1994-03-02 | Gasifying briquette for chemical fertilizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1107878A true CN1107878A (en) | 1995-09-06 |
| CN1039131C CN1039131C (en) | 1998-07-15 |
Family
ID=5030184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94101474 Expired - Fee Related CN1039131C (en) | 1994-03-02 | 1994-03-02 | Gasifying briquette for chemical fertilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1039131C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355868C (en) * | 2006-10-11 | 2007-12-19 | 北京科兰之星环保科技有限公司 | Clean briquette for producing chemical fertilizer gas and its prepn process and application |
| CN100392112C (en) * | 2005-12-27 | 2008-06-04 | 天津新技术产业园区津良科技有限公司 | Slag making recarburized ball and its production method |
| CN102925237A (en) * | 2012-11-13 | 2013-02-13 | 中国神华能源股份有限公司 | Pulverized coal forming binder and bonding method for pulverized coal forming |
| CN105838469A (en) * | 2016-06-08 | 2016-08-10 | 北京神雾环境能源科技集团股份有限公司 | Composite adhesive for molding coal powder and method for preparing molded coal |
| CN106190394A (en) * | 2016-08-04 | 2016-12-07 | 李娜 | A kind of clean moulded coal biomass binding agent and preparation method thereof |
| CN112266805A (en) * | 2020-09-04 | 2021-01-26 | 中国科学院山西煤炭化学研究所 | Method for preparing industrial briquette by utilizing combustible solid waste |
-
1994
- 1994-03-02 CN CN 94101474 patent/CN1039131C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392112C (en) * | 2005-12-27 | 2008-06-04 | 天津新技术产业园区津良科技有限公司 | Slag making recarburized ball and its production method |
| CN100355868C (en) * | 2006-10-11 | 2007-12-19 | 北京科兰之星环保科技有限公司 | Clean briquette for producing chemical fertilizer gas and its prepn process and application |
| CN102925237A (en) * | 2012-11-13 | 2013-02-13 | 中国神华能源股份有限公司 | Pulverized coal forming binder and bonding method for pulverized coal forming |
| CN105838469A (en) * | 2016-06-08 | 2016-08-10 | 北京神雾环境能源科技集团股份有限公司 | Composite adhesive for molding coal powder and method for preparing molded coal |
| CN106190394A (en) * | 2016-08-04 | 2016-12-07 | 李娜 | A kind of clean moulded coal biomass binding agent and preparation method thereof |
| CN112266805A (en) * | 2020-09-04 | 2021-01-26 | 中国科学院山西煤炭化学研究所 | Method for preparing industrial briquette by utilizing combustible solid waste |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1039131C (en) | 1998-07-15 |
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