CN105062584A - Preparation method for preparing coal gasified coal water slurry from blended coke waste - Google Patents
Preparation method for preparing coal gasified coal water slurry from blended coke waste Download PDFInfo
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- CN105062584A CN105062584A CN201510407104.9A CN201510407104A CN105062584A CN 105062584 A CN105062584 A CN 105062584A CN 201510407104 A CN201510407104 A CN 201510407104A CN 105062584 A CN105062584 A CN 105062584A
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Abstract
The invention relates to a preparation method for preparing coal gasified coal water slurry from blended coke waste. The coal gasified coal water slurry is obtained by water-grinding coke waste and coal which are used as raw materials into coke slurry and coal slurry and then performing technological preparation; the coke slurry is obtained by co-grinding the coke waste and water, and the coal slurry is obtained by co-grinding raw material coal and water; the weight percentage concentration of the coal gasified coal water slurry prepared from the coke slurry and the coal slurry through technological preparation ranges from 58% to 70%. According to the preparation method for preparing the coal gasified coal water slurry from the blended coke waste, the coke waste can replace 30%-70% of coal, pretreatment such as delivery, crushing and the like is reduced, the coal waste comprises coke breeze, coke powder and coke ash, is small in particle size and easier to grind, the coal gasified coal water slurry which is high in concentration and low in cost is obtained by mixing the formed coke slurry with the coal slurry in proportion, the coke waste is utilized, the environmental pressure is reduced, and the running economy of a gasifier is improved.
Description
Technical field
The present invention relates to and a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, belong to the Coal Gasification Technology field in coalification works technology.
Background technology
Xinjiang Uygur Autonomous Regions is vast in territory, rich coal resources, is the important energy splice zone of China and strategic energy reserves district.The third time coal resources prediction completed according to geology bureau of Xinjiang coalfield, Xinjiang Coal prognostic resources accounts for 40% of national coal resources prediction total amount, and position is the first in the nation position, has wide Coal Resource Development prospect.Present resource exhaustion trend and national energy demand also in ever-increasing situation at a collection of old Energy Base at China east, middle part, Xinjiang Coal will become the very important energy splice zone of China and strategic energy reserves district.Realize transforming and utilizing by the difference of coal and characteristic thereof, can avoid waste and the disorderly competition of coal resources, be also the basis of scientific development Xinjiang Coal resource.
Make a general survey of the coal class distribution in Xinjiang, there is significant spatial zonation and Temporal change.In Jurassic Coals of Xinjiang layer, there is distribution in the coal seam on basic, normal, high three coal rank, wherein based on para-bituminous coal, is secondly middle and high rank bituminous coal, the hard coal of high-rank coals and the brown coal of low coal rank rare, coal class is mainly based on long-flame coal, non-caking coal, weakly caking coal.
Development of Coal gasification technology is the grand strategy of the heavy chemical industry of Xinjiang development, gasification technology is divided into fixed bed, air flow bed and fluidized-bed, wherein entrained flow bed gasification technology is due to its clean environment firendly, do not produce organic wastewater with high concentration, more and more obtain significant progress, but by the research to Xinjiang Coal, large in reserves is main mainly with low-rank coal, because low-rank coal is high containing interior water, the coal water slurry made can not reach requirement, coal water slurry entrained flow bed application is limited to, the industrial lurgi gasifier mainly with fixed bed is main, this vapourizing furnace is seriously polluted, the waste water produced cannot thoroughly solve, havoc is brought to the environmental protection in Xinjiang and ecology.By the present invention with Coal and coke waste for coal water slurry made by raw material, by pressurized-gasification furnace producing synthesis gas, and then the water coal slurry pressurized gasification technology synthesizing various Chemicals is the important path of a development clean coal chemical industry.
Coal water slurry index the coal water slurry gasification technical field of Coal Chemical Industry requires: viscosity is 600 ~ 1200mPas, continuous flow, and stability is 24h, and syneresis rate is less than 7%, and concentration is not less than 58%, 0.08255mm granularity and accounts for 40% ~ 50%.The core of pulping technique is on the basis of suitable mobility, stability and the viscosity of maintenance, improves coal-water fluid concentration as far as possible.Industry park plan data show, on the industrial coal slurry basis of about 58%, coal-water fluid concentration often improves 1%, and available gas composition about improves 0.4%, often synthesize 1m3 synthetic gas, and coal consumption reduces 0.01kg, and oxygen consumption reduces 0.01m3.For the device of 600,000 t scales, be equivalent to reduce oxygen consumption 1,930 ten thousand m3 year, economize on coal 2.1 ten thousand t, improve effects 2,100 ten thousand yuan.Therefore, improving slurrying concentration is one of focus of Modern Coal-based Chemical device concern.
STRENGTH ON COKE manufacturing enterprise, calcium carbide manufacturing enterprise and other She Jiao enterprises, in process of production due to the purification of raw material, the pretreatment stages such as the screening of raw materials for production, produce a large amount of coke wastes, because coke waste is by dedusting charred ashes, screening coke powder and breeze composition, its granularity is little, airborne dust is large, calorific value is high, be unfavorable for recycling, serious environmental problem and waste problem is brought to manufacturing enterprise, general is all sell or mix coal at a bargain to burn, carbon content in breeze is high, its utility value is high, raw material just needed for coal water slurry, but at coke waste utilization technical elements, because the ground index of coke when grinding altogether with water is less than the half of coal, control water coal slurry concentration and size-grade distribution there is no method be applied to completely on industrialized unit.
Summary of the invention
For the above-mentioned shortcoming of prior art, the invention provides and a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, its tool has the following advantages: the coal water slurry mass percent concentration realized after low-rank coal and breeze mix grinding reaches 58%-70%, can obtain the coal water slurry index that coal water slurry gasification technical field requires after coal slurry starches mixture with Jiao.
The technical solution used in the present invention is: a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, and gasification coal water slurry is that to be raw material grind coking through water starches and after coal slurry by coke waste and coal, then prepares gained through technique; Described Jiao's slurry carries out common mill gained by coke waste and water, and described coal slurry is that feed coal and water carry out common mill gained; Burnt slurry and coal slurry prepare the weight percent concentration 58%-70% of gained gasification coal water slurry through technique.
Described a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, charred ashes after coke waste comprises useless breeze that She Jiao enterprise produces aborning, dedusting and the coke powder sieved out, can be wherein independent one or more when grinding altogether with water, mixing in any proportion.
Described a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, feed coal is the low-rank coal such as mud coal, brown coal, long-flame coal of low metamorphic grade, in any proportion after mixing and water carry out common mill.
Described a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, feed coal is one or more in the bituminous coal of middle and high metamorphic grade, hard coal, in any proportion after mixing and water carry out common mill.
Described a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, burnt slurry is formed by one or more mix grindings in grinding machine of water and coke waste, gained Jiao slurry weight percent concentration >=65%.
Described a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, coal slurry is that mix grinding in grinding machine forms by water and feed coal, gained coal slurry weight percent concentration >=48%.
Described a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, coal water slurry mobility is that in the size-grade distribution in coal slurry, 0.08mm particle size diameter accounts for 40-50% continuously.
Described a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, coal slurry and burnt slurry carry out mixture, and the part by weight of mixture is 8:2 ~ 1:9, adds slurry additive while mixture, obtains described gasification coal water slurry.
Described a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, coal slurry and burnt slurry carry out mixture at configured slot process unit, described configured slot process unit comprises Jiao, ature of coal amount proportioner regulator, configured slot, agitator, baffle, chemicals dosing plant are set in configured slot, at configured slot outer setting mixed cycle pump; Described compounding method is: burnt slurry carries out ratio control with coal slurry by burnt, ature of coal amount proportioner regulator, mix in the configured slot of belt stirrer, add slurry additive by chemicals dosing plant simultaneously, and undertaken circulating to mix by mixed cycle pump.
Described a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, slurry additive adds by thousand/1-10 of total coal water slurry quality, and total coal water slurry quality refers to the quality summation of coal slurry and burnt slurry.
Described a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, described slurry additive is the mixture of dispersion agent, stablizer, can be naphthalenesulfonate, sulfonated lignin, sulfonation humic acid salt, polycarboxylic acid series wherein one or more mixtures.
Beneficial effect of the present invention: what the present invention relates to mixes the collocation method of joining coke waste preparing coal gasified coal water slurry, coke waste can replace the coal consumption of 30%-70%, decrease the pre-treatment such as conveying, fragmentation, coke waste comprises breeze, coke powder, charred ashes, itself granularity is little, grind easier, Jiao's slurry formed is mixed in proportion with coal slurry and namely obtains the gasification coal water slurry that concentration is high, cost is low, not only make use of coke waste, decrease environmental stress, and improve the economy of gasifier operation.
Social benefit of the present invention: the useless breeze utilizing coke production and use enterprise to produce, useless coke powder and useless charred ashes, realize turning waste into wealth, namely decrease the pollution to environment, take full advantage of again the effective carbon content in waste, create larger economic benefit.The present invention is simultaneously that low-rank coal opens a full technical strategies for coal water slurry gasification technology.
Economic benefit of the present invention: on the industrial coal slurry basis of about 58%, coal-water fluid concentration often improves 1%, and available gas composition about improves 0.4%, often synthesizes 1m3 synthetic gas, and coal consumption reduces 0.01kg, and oxygen consumption reduces 0.01m3.Such as the device of 600,000 t scales, be equivalent to reduce oxygen consumption 1,930 ten thousand m3 year, economize on coal 2.1 ten thousand t, improve effects 2,100 ten thousand yuan.
Specific embodiments
Mix a compound method of joining coke waste preparing coal gasified coal water slurry, gasification coal water slurry is that to be raw material grind coking through water starches and after coal slurry by coke waste and coal, then prepares gained through technique; Described Jiao's slurry carries out common mill gained by coke waste and water, and described coal slurry is that feed coal and water carry out common mill gained.Burnt slurry and coal slurry prepare the weight percent concentration 58% of gained gasification coal water slurry through technique.
Another embodiment difference is, burnt slurry and coal slurry prepare the weight percent concentration 65% of gained gasification coal water slurry through technique.
Another embodiment difference is, burnt slurry and coal slurry prepare the weight percent concentration 70% of gained gasification coal water slurry through technique.
Another embodiment difference is, the charred ashes after coke waste comprises useless breeze that She Jiao enterprise produces aborning, dedusting and the coke powder sieved out, can be wherein independent one or more, mixing in any proportion when grinding altogether with water.
Another embodiment difference is, feed coal is the low-rank coal such as mud coal, brown coal, long-flame coal of low metamorphic grade, in any proportion mixing after and water carry out common mill.
Another embodiment difference is, feed coal is one or more in the bituminous coal of middle and high metamorphic grade, hard coal, in any proportion after mixing and water carry out common mill.
Another embodiment difference is, coal slurry and burnt slurry carry out mixture, and the part by weight of mixture is 8:2, adds slurry additive while mixture, obtains described gasification coal water slurry.
Another embodiment difference is, coal slurry and burnt slurry carry out mixture, and the part by weight of mixture is 4:6, adds slurry additive while mixture, obtains described gasification coal water slurry.
Another embodiment difference is, coal slurry and burnt slurry carry out mixture, and the part by weight of mixture is 3:7, adds slurry additive while mixture, obtains described gasification coal water slurry.
Another embodiment difference is, coal slurry and burnt slurry carry out mixture, and the part by weight of mixture is 2:8, adds slurry additive while mixture, obtains described gasification coal water slurry.
Another embodiment difference is, coal slurry and burnt slurry carry out mixture, and the part by weight of mixture is 1:9, adds slurry additive while mixture, obtains described gasification coal water slurry.
Another embodiment difference is, coal slurry and burnt slurry carry out mixture at configured slot process unit, described configured slot process unit comprises Jiao, ature of coal amount proportioner regulator, configured slot, agitator, baffle, chemicals dosing plant are set in configured slot, at configured slot outer setting mixed cycle pump; Described compounding method is: burnt slurry carries out ratio control with coal slurry by burnt, ature of coal amount proportioner regulator, mix in the configured slot of belt stirrer, add slurry additive by chemicals dosing plant simultaneously, and undertaken circulating to mix by mixed cycle pump.
Another embodiment difference is, slurry additive adds by 1/1000th of total coal water slurry quality.
Another embodiment difference is, slurry additive adds by 5/1000ths of total coal water slurry quality.
Another embodiment difference is, slurry additive adds by 8/1000ths of total coal water slurry quality.
Another embodiment difference is, slurry additive adds by 10/1000ths of total coal water slurry quality.
Another embodiment difference is, slurry additive is naphthalenesulfonate.
Another embodiment difference is, slurry additive is sulfonation humic acid salt.
Another embodiment difference is, slurry additive is naphthalenesulfonate, lignosulfonic acid salt mixture.
Another embodiment difference is, slurry additive is naphthalenesulfonate, sulfonated lignin, sulfonation humic acid salt, polycarboxylic acid series mixture.
Following examples of the present invention, all coal the mixture stage, carry out mix and blend simultaneously, increase additive, control the concentration (note: in presents, all symbols and unit thereof all mark file specify according to " Chinese Coal Classification " GB/T5751-2009 and corresponding GB, portion) of coal water slurry.
Table 1 coal and coke waste property analysis
The sludge forming performance of the independent coal-grinding of table 2 and mill Jiao
Table 3 ratio mixture example
The gasification coal water slurry obtained after coke waste of the present invention and feed coal mixture, through being applied in Tsing-Hua University's coal slurry gasifier suitability for industrialized production, prove completely disastrously to burn, coal water slurry sludge forming performance is good, and burning thoroughly, meets need of production.
Claims (10)
1. mix a compound method of joining coke waste preparing coal gasified coal water slurry, it is characterized in that gasification coal water slurry is that to be raw material grind coking through water starches and after coal slurry by coke waste and coal, then prepare gained through technique; Described Jiao's slurry carries out common mill gained by coke waste and water, and described coal slurry is that feed coal and water carry out common mill gained; Burnt slurry and coal slurry prepare the weight percent concentration 58%-70% of gained gasification coal water slurry through technique.
2. according to claim 1ly a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, it is characterized in that: the charred ashes after coke waste comprises useless breeze that She Jiao enterprise produces aborning, dedusting and the coke powder sieved out, can be wherein independent one or more when grinding altogether with water, mixing in any proportion.
3. according to claim 1ly a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, it is characterized in that: feed coal is the low-rank coal such as mud coal, brown coal, long-flame coal of low metamorphic grade, in any proportion after mixing and water carry out common mill.
4. according to claim 1ly a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, it is characterized in that: feed coal is one or more in the bituminous coal of middle and high metamorphic grade, hard coal, in any proportion after mixing and water carry out common mill.
5. according to claim 1ly a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, it is characterized in that: burnt slurry is formed by one or more mix grindings in grinding machine of water and coke waste, gained Jiao slurry weight percent concentration >=65%.
6. according to claim 1ly a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, it is characterized in that: coal slurry is that mix grinding in grinding machine forms by water and feed coal, gained coal slurry weight percent concentration >=48%.
7. according to claim 1ly a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, it is characterized in that: coal water slurry mobility is continuous, and in the size-grade distribution in coal water slurry, 0.08mm particle size diameter accounts for 40-50%.
8. a kind of according to the arbitrary claim of claim 1-4 mixes the compound method of joining coke waste preparing coal gasified coal water slurry, it is characterized in that: coal slurry and burnt slurry carry out mixture, the part by weight of mixture is 8:2 ~ 1:9, add slurry additive while mixture, obtain described gasification coal water slurry.
9. according to claim 8ly a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, it is characterized in that: slurry additive adds by thousand/1-10 of total coal water slurry quality.
10. according to claim 8ly a kind ofly mix the compound method of joining coke waste preparing coal gasified coal water slurry, it is characterized in that: described slurry additive is the mixture of dispersion agent, stablizer, can be naphthalenesulfonate, sulfonated lignin, sulfonation humic acid salt, polycarboxylic acid series wherein one or more mixtures.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105400548A (en) * | 2015-11-20 | 2016-03-16 | 新奥科技发展有限公司 | Coal hydrogasification method and system |
Citations (3)
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| CN1092231C (en) * | 1999-05-28 | 2002-10-09 | 中国石油化工集团公司 | Low-grade coal modified refinery coke water slurry composition and use thereof |
| US6818190B2 (en) * | 1999-07-15 | 2004-11-16 | Fuji Photo Film Co., Ltd. | Apparatus for preparing non-photosensitive fatty acid silver salt grains |
| CN101851536A (en) * | 2009-03-31 | 2010-10-06 | 通用电气公司 | Be used to mix the method and apparatus of brown coal slurry and coke slurry |
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- 2015-07-13 CN CN201510407104.9A patent/CN105062584A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1092231C (en) * | 1999-05-28 | 2002-10-09 | 中国石油化工集团公司 | Low-grade coal modified refinery coke water slurry composition and use thereof |
| US6818190B2 (en) * | 1999-07-15 | 2004-11-16 | Fuji Photo Film Co., Ltd. | Apparatus for preparing non-photosensitive fatty acid silver salt grains |
| CN101851536A (en) * | 2009-03-31 | 2010-10-06 | 通用电气公司 | Be used to mix the method and apparatus of brown coal slurry and coke slurry |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105400548A (en) * | 2015-11-20 | 2016-03-16 | 新奥科技发展有限公司 | Coal hydrogasification method and system |
| CN105400548B (en) * | 2015-11-20 | 2018-07-10 | 新奥科技发展有限公司 | A kind of coal hydrogenation gasification method and system |
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Application publication date: 20151118 |