CN103923715B - With blue charcoal end for the method for water charcoal slurry prepared by raw material - Google Patents
With blue charcoal end for the method for water charcoal slurry prepared by raw material Download PDFInfo
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- CN103923715B CN103923715B CN201410148826.2A CN201410148826A CN103923715B CN 103923715 B CN103923715 B CN 103923715B CN 201410148826 A CN201410148826 A CN 201410148826A CN 103923715 B CN103923715 B CN 103923715B
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Abstract
A kind of with blue charcoal end for the method for water charcoal slurry prepared by raw material, first, after blue charcoal end is placed in the process of drying box drying, the fine grinding in grinding machine of dry method grinding process is adopted to obtain varigrained blue powdered carbon, batch mixing is carried out according to set grading distribution scheme, subsequently a certain amount of additive is dissolved in the water, with Ramsbottom carbon powder mix and blend until become uniform pulpous state, obtains that concentration is high, the water charcoal of good stability slurry product; Present invention process is simple, easy to operate, can directly utilize existing water-coal-slurry process units to produce, the water charcoal slurry product prepared can reach the application standard of the industries such as burning and gasification completely, has great importance to efficient, the clean utilization of existing blue charcoal end resource.
Description
Technical field
The invention belongs to clean coal technical field, be specifically related to a kind of with blue charcoal end for the method for water charcoal slurry prepared by raw material.
Background technology
The lower-grade metamorphic bituminous resource of China (jet coal, dross coal, weakly caking coal) accounts for more than 60% of coal resources, Ordos Basin and North Shaanxi (Yulin, Yan'an) are that National Development and Reform Committee plans the unique energy plant resource of the civilian country ratified of No. (1998) 1404, word, be richly stored with low-disintegration coal resource, have the advantages that low ash, low-sulfur, low-phosphorous, low ash smelting point and golf calorific value, high inertinite divide content, high oxidation calcium content, account for 34.9% of the whole nation.This resource is mainly used as power with coal or by middle low temperature distillation (pyrolysis) and obtains blue charcoal, burnt oil and gas product at present.Research shows, the tar content of this coal is generally 7% ~ 12%, therefore obtain blue charcoal by middle low temperature distillation technique, burnt oil and gas be at present a kind of the most simply, the most applicable path for transformation, this has special meaning to the energy resource structure optimizing China's oil starvation weak breath.
Blue charcoal is that one has the good characteristics such as high chemism, high specific resistance, high fixed carbon, low ash, low-sulfur, low-phosphorous, low alchlor, but intensity poor carbonaceous product relative to crush resistance, be widely used in industries such as ferroalloy, calcium carbide, chemical fertilizer.Shan Jinning County of China has built Meng Gan contiguous areas large quantities of Lan Tan factory, total capacity about 6,000 ten thousand tons, with 9,600 ten thousand tons, coal.Wherein, about 4,500 ten thousand tons, area, Yulin, with 7,200 ten thousand tons, coal, has become the mainstay industry of Regional Economic Development, blue about 6,750,000 tons of the charcoal end that process produces.In addition, in actual coal production, lump coal yield is only 30% to 40%, only with regard to area, Yulin, between in January, 2012-October, fine coal output just reaches about 1.8 hundred million tons, if pulverized coal pyrolysis technology wide popularization and application, calculate by process 50%, the blue powdered carbon having about 6,000 ten thousand tons every year produces.Therefore, adopting blue charcoal ultimogeniture to produce water charcoal slurry replaces water-coal-slurry to be a kind of new way of the blue charcoal end product clean utilization of gained after China's low-disintegration coal resource classification, upgrading for gas making and boiler.
Water-coal-slurry be a kind of physical method that adopts by the New-type fuel of coal liquefied, according to coal 60 ~ 70%, the ratio of water 30 ~ 40%, adds a small amount of additive and is prepared from.It had both maintained the original physical features of coal, had again the same mobility of image-stone oil and stability, can pumping, again easily accumulating and adjustment, can spray burning, belong to low stain clean fuel again, and efficiency of combustion was high, is called as liquid coal product.On this basis, to the present invention proposes with blue charcoal end as the method for water charcoal slurry prepared by raw material, that tries hard to expand blue charcoal end utilizes field, solves the problem that blue charcoal end utilization ratio is low.
Blue charcoal is the product of low temperature distillation in low-disintegration coal, with the Nomenclature Composition and Structure of Complexes of coal, there is basic difference, the architectural feature of his uniqueness causes its surface to have strong hydrophobicity, and easy pulping unlike coal dust needs by special dispersant to change its hydrophily.Compared with coal dust, the interior water content of blue charcoal is lower, but can adsorb a certain amount of hydrone containing oxygen polar functional group in structure, thus water content in increasing, make the concentration of slurry be difficult to improve.The grain size distribution of blue charcoal is also guardian technique, and higher deposition efficiency is conducive to the mobility increasing water charcoal slurry, and only have grain size distribution reasonable, its slurry just can reach suitable viscosity and good stability.Ramsbottom carbon powder particle is thinner simultaneously, and its surface area is larger, also easier Spontaneous Condensation.Therefore, in the preparation process of water charcoal slurry, how being prepared as a kind of uniform slurry, also will having low viscosity, high concentration and good stability and mobility simultaneously, is the crucial problem needing emphasis to solve and capture.
Summary of the invention
The object of the present invention is to provide a kind of method producing water charcoal slurry with blue charcoal end, the method technique is simple, water-coal-slurry process units ripe at present can be utilized to produce, the water charcoal slurry of preparation has the excellent performance indications such as high concentration, high stability, can meet the application requirement of the industry such as burning, gasification completely.
For achieving the above object, the present invention takes following technical scheme:
With blue charcoal end for the method for water charcoal slurry prepared by raw material, with the blue charcoal end of low temperature pyrogenation product in lower-grade metamorphic bituminous for water charcoal slurry prepared by raw material, lower-grade metamorphic bituminous is weakly caking coal, dross coal or jet coal, comprises the steps:
Step one, carrying out drying process by blue charcoal end, carrying out ore grinding with being placed in grinding machine, obtain the powder of size fractionated after screening process under 100 DEG C of conditions, carries out batch mixing and fully mixing according to set grading distribution scheme;
Step 2, gets quantitative additive and is dissolved in a certain amount of water, obtain mixed solution;
Step 3, by mixed for step one gained Ramsbottom carbon powder and step 2 gained additive aqueous solution, stirs and obtains water charcoal slurry.
Preferably, adopt dry method grinding process to obtain the powder of size fractionated in described step one, grading distribution scheme is (mass fraction) :-200 orders account for 60-90%, and 100-200 order accounts for 5-20%, and 60-100 order accounts for 5-20%.
Preferably, in described step 2, additive is a kind of polymer of APEO-acrylate and the mixture of sodium carboxymethylcellulose.
Preferably, described additive amount (mass fraction) is the 0.1-2.0% of blue charcoal end siccative amount, and wherein, the polymer of APEO-acrylate accounts for 0.1-0.5%, and sodium carboxymethylcellulose accounts for 0-1.5%.
The preparation method of the polymer of described APEO-acrylate is: a certain amount of APEO is water-soluble at 60 DEG C, stir 30min, drip acrylate and initiator ammonium persulfate, the mol ratio of APEO and acrylate is 1:1.5, ammonium persulfate consumption is the 10%(mass fraction of acrylate consumption), the consumption of water is add material gross weight 60%, reacts 4h, obtain APEO-acrylate polymer at 60 ~ 80 DEG C.
Preferably, in described step 2, the consumption of water calculates according to water charcoal slurry concentration and additive amount, and computing formula is: water coal slurry concentration (mass fraction %)=dry coal quality (g)/[dry coal quality (g)+water (g)+additive (g)] × 100%.
Preferably, in step 3, blue charcoal end is first with 1500 ~ 2000rmin with the stirring of additive aqueous solution
-1speed rapid stirring to mixture become slurry shape, then with 400 ~ 500rmin
-1speed low rate mixing.
Compared with prior art, advantage of the present invention is:
(1) high concentration of burning and gasification industry application, the water charcoal slurry product of high stability is met using blue charcoal end as body material processability.
(2) solve a comprehensive utilization difficult problem for low-disintegration coal (weakly caking coal, dross coal, jet coal) pyrolysis solid product-Lan charcoal, expand the application at blue charcoal end, the water-coal-slurry device of prior art maturation and technique can be utilized directly to produce simultaneously.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further details.
Raw materials used is the blue charcoal end in area, Yulin, its elementary analysis and Industrial Analysis result as shown in table 1.
Table 1 Industrial Analysis and elementary analysis
Embodiment 1: select additive to be APEO-acrylate polymer and sodium carboxymethylcellulose, its mass fraction is 1.0% of blue charcoal end siccative, wherein, APEO-acrylate polymer 0.5%, sodium carboxymethylcellulose 0.5%.The preparation method of the polymer of APEO-acrylate is: a certain amount of APEO is water-soluble at 60 DEG C, stir 30min, drip acrylate and initiator ammonium persulfate, the mol ratio of APEO and acrylate is 1:1.5, ammonium persulfate consumption is the 10%(mass fraction of acrylate consumption), the consumption of water is add material gross weight 60%, reacts 4h, obtain APEO-acrylate polymer at 60 ~ 80 DEG C.
Selection grading distribution scheme is: >200 order 90%, 100-200 order 6%, 60-100 order 4%, and by Ramsbottom carbon powder 50g, rapid stirring after water 38ml mixes according to abovementioned steps with additive, subsequently with 1500rmin
-1water charcoal slurry product is prepared after stirring 10min.Water charcoal slurry concentration is 56.50%, and viscosity is 1100mpaS, and mobility is better, and stability is high, leaves standstill 5d without bleed, leaves standstill 20d for recovering soft precipitation.
Embodiment 2: select additive to be APEO-acrylate polymer and sodium carboxymethylcellulose, its mass fraction is 1.0% of blue charcoal end siccative, wherein, APEO-acrylate polymer 0.5%, sodium carboxymethylcellulose 0.5%.Selection grading distribution scheme is: >200 order 80%, 100-200 order 15%, 60-100 order 5%, and by Ramsbottom carbon powder 50g, rapid stirring after water 37ml mixes according to abovementioned steps with additive, subsequently with 1500rmin
-1water charcoal slurry product is prepared after stirring 10min.Water charcoal slurry concentration is 57.14%, and viscosity is 1200mpaS, and stability is higher, and mobility is better, leaves standstill 5d without bleed, leaves standstill 17d for recovering soft precipitation.
Embodiment 3: select additive to be APEO-acrylate polymer and sodium carboxymethylcellulose, its mass fraction is 1.0% of blue charcoal end siccative, wherein, APEO-acrylate polymer 0.5%, sodium carboxymethylcellulose 0.5%.Selection grading distribution scheme is: >200 order 67%, 100-200 order 18%, 60-100 order 15%, by Ramsbottom carbon powder 50g, water 38ml mixes according to abovementioned steps with additive, subsequently with 1500rmin
-1water charcoal slurry product is prepared after stirring 10min.Water charcoal slurry concentration is 56.50%, and viscosity is 900mpaS, good fluidity, and stability is higher, leaves standstill 4d without bleed, leaves standstill 10d for recovering soft precipitation.
Embodiment 4: selection grading distribution scheme is: >200 order 80%, 100-200 order 15%, 60-100 order 5%.Selection additive is APEO-acrylate polymer, its mass fraction of sodium carboxymethylcellulose is 1.0% of blue charcoal end siccative, wherein, and APEO-acrylate polymer 0.4%, sodium carboxymethylcellulose 0.6%.By Ramsbottom carbon powder 50g, rapid stirring after water 38ml mixes according to abovementioned steps with additive, subsequently with 1500rmin
-1water charcoal slurry product is prepared after stirring 10min.Water charcoal slurry concentration is 56.53%, and viscosity is 920mpaS, good fluidity, and stability is high, leaves standstill 5d without bleed, leaves standstill 20d for recovering soft precipitation.
Embodiment 5: selection grading distribution scheme is: >200 order 80%, 100-200 order 15%, 60-100 order 5%.Select additive to be APEO-acrylate polymer, sodium carboxymethylcellulose, its mass fraction is 0.9% of blue charcoal end siccative, wherein, and APEO-acrylate polymer 0.3%, sodium carboxymethylcellulose 0.6%.By Ramsbottom carbon powder 50g, rapid stirring after water 37ml mixes according to abovementioned steps with additive, subsequently with 1500rmin
-1water charcoal slurry product is prepared after stirring 10min.Water charcoal slurry concentration is 57.18%, and viscosity is 1220mpaS, and mobility is better, and stability is high, leaves standstill 5d without bleed, leaves standstill 18d for recovering soft precipitation.
Embodiment 6: selection grading distribution scheme is: >200 order 80%, 100-200 order 15%, 60-100 order 5%.Select additive to be APEO-acrylate polymer, sodium carboxymethylcellulose, its mass fraction is 1.5% of blue charcoal end siccative, wherein, and APEO-acrylate polymer 0.5%, sodium carboxymethylcellulose 1.0%.By Ramsbottom carbon powder 50g, rapid stirring after water 35ml mixes according to abovementioned steps with additive, subsequently with 1500rmin
-1stir 5min, then with 500rmin
-1water charcoal slurry product is prepared after low rate mixing 5min.Water charcoal slurry concentration is 58.30%, and viscosity is 960mpaS, good fluidity, and stability is high, leaves standstill 7d without bleed, leaves standstill 25d for recovering soft precipitation.
The present invention is last for body material with blue charcoal, under the condition adding a small amount of additive, carry out stir process with a certain amount of water to produce water charcoal and starch, emphasis solves the kind of grain size distribution and additive and consumption selects two hang-ups, successfully prepare the water charcoal slurry product of low viscosity, high concentration, high stability, after expanding low-disintegration coal destructive distillation further, the blue charcoal of solid product utilizes scope, be a kind of effective clean coal technology, the technological progress of the blue charcoal industry of China and sustainable development are had important practical significance.
Claims (1)
1. with blue charcoal end for the method for water charcoal slurry prepared by raw material, it is characterized in that, with the blue charcoal end of low temperature pyrogenation product in lower-grade metamorphic bituminous for water charcoal slurry prepared by raw material, lower-grade metamorphic bituminous is weakly caking coal, dross coal or jet coal, comprises the steps:
Step one, carrying out drying process by blue charcoal end, carrying out ore grinding with being placed in grinding machine, obtain the powder of size fractionated after screening process under 100 DEG C of conditions, carries out batch mixing and fully mixing according to set grading distribution scheme;
Step 2, is dissolved in quantitative additive in a certain amount of water, obtains mixed solution;
Step 3, by mixed for step one gained Ramsbottom carbon powder and step 2 gained additive aqueous solution, stirs and obtains water charcoal slurry;
Wherein, adopt dry method grinding process to obtain the powder of size fractionated in described step one, in mass fraction, grading distribution scheme is: >200 order accounts for 60-90%, and 100-200 order accounts for 5-20%, and 60-100 order accounts for 5-20%;
In described step 2, additive is a kind of polymer of APEO-acrylate and the mixture of sodium carboxymethylcellulose;
In described step 3, blue charcoal end and the stirring of additive aqueous solution are first with 1500 ~ 2000rmin
-1speed rapid stirring to mixture become slurry shape, then with 400 ~ 500rmin
-1speed low rate mixing.
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| CN106190375A (en) * | 2016-08-17 | 2016-12-07 | 中国石化长城能源化工（宁夏）有限公司 | A kind of industry Ramsbottom carbon powder and biochemical sludge are mixed with water-coal-slurry method |
| CN107586575A (en) * | 2017-10-26 | 2018-01-16 | 西安建筑科技大学 | A kind of water charcoal slurry and preparation method |
| CN109294642A (en) * | 2018-10-26 | 2019-02-01 | 宁夏然尔特工业产业研究院（有限公司） | A kind of water-coal-slurry and preparation method thereof |
| CN110240960A (en) * | 2019-06-13 | 2019-09-17 | 国家能源投资集团有限责任公司 | A kind of pulping process that low-disintegration coal is coupled with semicoke |
| CN111534340B (en) * | 2020-04-21 | 2021-09-03 | 梵境新能源科技(浙江)有限公司 | Gasified coal water slurry prepared by utilizing multi-source wastes and preparation method thereof |
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| CN101921639A (en) * | 2010-08-28 | 2010-12-22 | 福州大学 | Method for preparing water-coal-slurry additive taking enzymatic hydrolysis lignin as raw material |
| CN102260556A (en) * | 2011-07-11 | 2011-11-30 | 大连理工大学 | Coal water slurry with brown coal low-temperature modified semi coke as raw material and preparation method thereof |
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| US4375358A (en) * | 1980-09-02 | 1983-03-01 | Conoco Inc. | Fuel slurries of solid carbonaceous material in water |
| JPS59145293A (en) * | 1983-02-07 | 1984-08-20 | Kao Corp | Dispersion stabilizer for aqueous slurry of petroleum coke |
| KR900000915B1 (en) * | 1986-02-12 | 1990-02-19 | 가부시기가이샤 구루시마그룹교도기주쓰겡규쇼 | Process for fluid of low carbonized coal |
| CN101550369B (en) * | 2008-12-26 | 2012-08-29 | 新奥新能(北京)科技有限公司 | Water-coal-slurry additive and preparation method thereof |
| CN103113944B (en) * | 2013-02-26 | 2014-08-06 | 陕西延长石油矿业有限责任公司 | Method for preparing water-coke slurry |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101921639A (en) * | 2010-08-28 | 2010-12-22 | 福州大学 | Method for preparing water-coal-slurry additive taking enzymatic hydrolysis lignin as raw material |
| CN102260556A (en) * | 2011-07-11 | 2011-11-30 | 大连理工大学 | Coal water slurry with brown coal low-temperature modified semi coke as raw material and preparation method thereof |
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