CN102827659B - Brown coal dust forming and quality improving method - Google Patents
Brown coal dust forming and quality improving method Download PDFInfo
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- CN102827659B CN102827659B CN201210343678.0A CN201210343678A CN102827659B CN 102827659 B CN102827659 B CN 102827659B CN 201210343678 A CN201210343678 A CN 201210343678A CN 102827659 B CN102827659 B CN 102827659B
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Abstract
The invention discloses a brown coal dust forming and quality improving method. The method belongs to a simple method comprising the following steps that brown coal dust is adopted, bonding agents are added, the materials are stirred, mixed, formed and baked, then, the materials are sent into a semi coke furnace to be subjected to thermolysis according to a semi coke thermolysis method, and finished products are obtained. The brown coal dust is processed into briquette coal, and the coal dust forming baking moisture needs to be controlled at 15 percent to 18 percent. The method is adopted for forming the brown coal dust, certain shape and intensity can still be maintained after the thermolysis quality improving treatment, the problem of fly dust after the brown coal blocks are crushed into coal dust after the quality improvement is solved, the occurrence of fly dust can be avoided during the transportation, the loading and the unloading, and the coal dust can be directly burnt and used. According to the process, the mature processing method of the semi coke thermolysis is utilized, and the process problems of furnace body design, coal tar and coal gas recovery and utilization, environment pollution and the like do not need to be considered. The finished products can be used for replacing anthracitic coal to be burnt and used, and can also be used as production type coke and as raw materials of anthracitic coal blocks. The investment is low, and the process is simple.
Description
Technical field
The present invention relates to a kind of brown coal upgrading improving technology field, be specially a kind of method of brown coal conny moulding upgrading.
Background technology
Brown coal: quality is loose, and carbon content is low and softer, and moisture is large, volatile matter high (more than 40%), be the pit coal that degree of coalification is minimum, fixed carbon content is few, poor thermal efficiency, and use value is low, store easy spontaneous combustion, owing to becoming fine powder after the loose weathering of quality, in transportation, produce flying dust.Brown coal conny quality time, being difficult to use, storing and transporting, is a kind of inferior quality energy.
The brown coal upgrading history of technique is in the Germany of 20 beginnings of the century, based on war, need to build large-scale brown coal low-temperature pyrolysis factory, produces paraffin oil, solid-state smokeless fuel, gasoline, diesel oil etc.After the seventies in last century oil crisis; people pay attention to the exploitation to cheap brown coal more, both at home and abroad advanced brown coal deep processing: the fluid bed fast pyrolysis technique of the L-R technique of Germany, Australia, the multistage rotary kiln technique of China, Chinese solid thermal carriers distillation process etc.Abound with for a long time the country of brown coal, in brown coal, smalls moulding upgrading process, pass through the physical actions such as high pressure, shearing or steam heating, make its gel structure and space system be subject to irreversible destruction, from having changed in essence the coal price of coal sample, degree of coalification also improves thereupon.
Yet, in existing brown coal conny process for upgrading, if publication number is the disclosed brown coal upgrading of CN101486922A modifying production process, machine, air conditioner, drying machine and many integrators need to seethe with excitement, although can reach the effect of brown coal upgrading, but complex process, and support equipment is more, has improved production cost.
Publication number is that CN102433187A discloses a kind of brown coal upgrading forming method, although technique is simple, and equipment is less, has also arrived the object of Moulding Process of Brown Coal transportation, and this technique is considered more from Moulding Process of Brown Coal transportation, for brown coal physique, have little effect.
In order to overcome above-mentioned deficiency of the prior art, a kind of good moulding of brown coal conny that can allow is provided, can improve the quality of brown coal again simultaneously, and equipment is few, technique is simple, and the method for brown coal conny upgrading with low cost is a good problem to study.
Summary of the invention
In order to overcome above-mentioned deficiency of the prior art, the invention provides that a kind of technical process is simple, equipment is less, and low production cost, well reached brown coal conny moulding upgrading object brown coal conny moulding method for upgrading simultaneously.
The object of the present invention is achieved like this:
A method for brown coal conny moulding upgrading, its concrete steps are as follows:
the first step:brown coal conny is dried or natural drying to moisture 20%-25%, levigate>=30 orders, add water glass or coal tar 10%-15% as caking agent, are fully uniformly mixed;
Second step: the compound hand after the first step is fully uniformly mixed is pinched agglomerating not loose, with 8MPa-12MPa roller briquetting machine or impact molding machine, be pressed into diameter 3cm-7cm block, under≤70 ℃ of conditions, bake and bank up with earth 2.5-3.5 hour, reach the block brown coal moisture of compacting at 15%-18%;
The 3rd step: the block brown coal of second step compacting are sent into stove for the blue charcoal of pyrolysis by blue charcoal pyrolysis method, pyrolysis 2-3 hour at 600 ℃-750 ℃, the coal tar of separating out in pyrolysis and coal-gas recovering method adopt the treatment process of the blue charcoal maturation of pyrolysis to recycle; Brown coal volatile matter≤8% after pyrolysis, still keep shape, and there is 350-400N intensity and be finished product.
positive beneficial effect:the present invention adopts brown coal conny to add caking agent after being uniformly mixed moulding oven dry, sends blue charcoal stove to by the pyrolysis of blue charcoal pyrolysis method, becomes a kind of simple method of finished product.Brown coal smalls is through being processed into moulded coal; Moisture is dried in smalls moulding will be controlled at (brown coal lump coal does not need to dry) between 15%-18%; Adopt this kind of technique by the moulding of brown coal smalls, after pyrolysis upgrading is processed, still can keep definite shape, intensity, be ground into conny airborne dust problem after having changed the upgrading of brown coal lump coal, transportation loading and unloading there will be no airborne dust to occur, and also can directly use.This technique is used the treatment process of the blue charcoal maturation of pyrolysis, need not consider to design the technological problemses such as body of heater and coal tar, coal-gas recovering utilization, environmental pollution again.This finished product is that alternative hard coal uses, and also can be used as and produces formed coke, does anthracite block coal raw material.Less investment, technique is simple.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further:
A method for brown coal conny moulding upgrading, its concrete steps are as follows:
The first step: brown coal conny is dried or natural drying to moisture 20%-25%, levigate >=30 orders, add water glass or coal tar 10%-15% as caking agent, are fully uniformly mixed;
Second step: the compound hand after the first step is fully uniformly mixed is pinched agglomerating not loose, with 8MPa-12MPa roller briquetting machine or impact molding machine, be pressed into diameter 3cm-7cm block, under≤70 ℃ of conditions, bake and bank up with earth 2.5-3.5 hour, reach the block brown coal moisture of compacting at 15%-18%;
The 3rd step: the block brown coal of second step compacting are sent into stove for the blue charcoal of pyrolysis by blue charcoal pyrolysis method, pyrolysis 2-3 hour at 600 ℃-750 ℃, the coal tar of separating out in pyrolysis and coal-gas recovering method adopt the treatment process of the blue charcoal maturation of pyrolysis to recycle; Brown coal volatile matter≤8% after pyrolysis, still keep shape, and there is 300-400N intensity and be finished product.
embodiment 1
A method for brown coal conny moulding upgrading, its concrete steps are as follows:
The first step: the oven dry of brown coal conny or natural drying are arrived to full water 20%, and levigate 30 orders, add water glass or coal tar 10% as caking agent, are fully uniformly mixed;
Second step: the compound hand after the first step is fully uniformly mixed is pinched agglomerating not loose, is pressed into diameter 3cm block with 8MPa roller briquetting machine or impact molding machine, bakes and banks up with earth 2.5 hours under 70 ℃ of conditions, reaches the block brown coal moisture of compacting 15%;
The 3rd step: the block brown coal of second step compacting are sent into stove for the blue charcoal of pyrolysis by blue charcoal pyrolysis method, and pyrolysis is 2 hours at 600 ℃, and the coal tar of separating out in pyrolysis and coal-gas recovering method adopt the treatment process of the blue charcoal maturation of pyrolysis to recycle; Brown coal volatile matter≤8% after pyrolysis, still keep shape, and there is 300N intensity and be finished product.
embodiment 2
A method for brown coal conny moulding upgrading, its concrete steps are as follows:
The first step: brown coal conny is dried or natural drying to moisture 22%, levigate 28 orders, add water glass or coal tar 12% as caking agent, are fully uniformly mixed;
Second step: the compound hand after the first step is fully uniformly mixed is pinched agglomerating not loose, is pressed into diameter 5cm block with 10MPa roller briquetting machine or impact molding machine, bakes and banks up with earth 3 hours under 65 ℃ of conditions, reaches the block brown coal moisture of compacting 16%;
The 3rd step: the block brown coal of second step compacting are sent into stove for the blue charcoal of pyrolysis by blue charcoal pyrolysis method, and pyrolysis is 2.5 hours at 700 ℃, and the coal tar of separating out in pyrolysis and coal-gas recovering method adopt the treatment process of the blue charcoal maturation of pyrolysis to recycle; Brown coal volatile matter≤8% after pyrolysis, still keep shape, and there is 350N intensity and be finished product.
embodiment 3
A method for brown coal conny moulding upgrading, its concrete steps are as follows:
The first step: brown coal conny is dried or natural drying to moisture 25%, levigate 25 orders, add water glass or coal tar 10%-15% as caking agent, are fully uniformly mixed;
Second step: the compound hand after the first step is fully uniformly mixed is pinched agglomerating not loose, is pressed into diameter 7cm block with 12MPa roller briquetting machine or impact molding machine, bakes and banks up with earth about 3.5 hours under 60 ℃ of conditions, reaches the block brown coal moisture of compacting 18%;
The 3rd step: the block brown coal of second step compacting are sent into stove for the blue charcoal of pyrolysis by blue charcoal pyrolysis method, and pyrolysis is 3 hours at 750 ℃, and the coal tar of separating out in pyrolysis and coal-gas recovering method adopt the treatment process of the blue charcoal maturation of pyrolysis to recycle; Brown coal volatile matter≤8% after pyrolysis, still keep shape, and there is 400N intensity and be finished product.
The present invention adopts brown coal conny to add caking agent after being uniformly mixed moulding oven dry, sends blue charcoal stove to by the pyrolysis of blue charcoal pyrolysis method, becomes a kind of simple method of finished product.Brown coal smalls is through being processed into moulded coal; Moisture is dried in smalls moulding will be controlled at (brown coal lump coal does not need to dry) between 15%-18%; Adopt this kind of technique by the moulding of brown coal smalls, after pyrolysis upgrading is processed, still can keep definite shape, intensity, be ground into conny airborne dust problem after having changed the upgrading of brown coal lump coal, transportation loading and unloading there will be no airborne dust to occur, and also can directly use.This technique is used the treatment process of the blue charcoal maturation of pyrolysis, need not consider to design the technological problemses such as body of heater and coal tar, coal-gas recovering utilization, environmental pollution again.This finished product is that alternative hard coal uses, and also can be used as and produces formed coke, does anthracite block coal raw material.Less investment, technique is simple.
Although disclose for the purpose of illustration embodiments of the invention, its object is to help understanding content of the present invention tool to implement, but person skilled in the art, without departing from the spirit and scope of the invention and the appended claims, can do various replacements, variation and retouching.Therefore, the present invention should not be limited to the disclosed content of embodiment, and protection scope of the present invention is as the criterion with the scope that appending claims was defined.
Claims (1)
1. the method for a brown coal conny moulding upgrading
,it is characterized in that, concrete steps are as follows:
The first step: brown coal conny is dried to moisture 20%-25%, and levigate >=30 orders, add water glass or coal tar 10%-15% as caking agent, are fully uniformly mixed;
Second step: the compound hand after the first step is fully uniformly mixed is pinched agglomerating not loose, with 8MPa-12MPa roller briquetting machine or impact molding machine, be pressed into diameter 3cm-7cm block, under≤70 ℃ of conditions, bake and bank up with earth 2.5-3.5 hour, reach the block brown coal moisture of compacting between 15%-18%;
The 3rd step: the block brown coal of second step compacting are sent into stove for the blue charcoal of pyrolysis by blue charcoal pyrolysis method, and pyrolysis is 3 hours at 700 ℃-750 ℃, and the coal tar of separating out in pyrolysis and coal-gas recovering method adopt the treatment process of the blue charcoal maturation of pyrolysis to recycle; The volatilization of brown coal after pyrolysis is divided into 8%, still keeps shape, and has 300-400N intensity and be finished product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210343678.0A CN102827659B (en) | 2012-09-17 | 2012-09-17 | Brown coal dust forming and quality improving method |
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| CN201210343678.0A CN102827659B (en) | 2012-09-17 | 2012-09-17 | Brown coal dust forming and quality improving method |
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| CN102827659A CN102827659A (en) | 2012-12-19 |
| CN102827659B true CN102827659B (en) | 2014-04-02 |
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| CN103525495B (en) * | 2013-11-04 | 2015-04-08 | 江苏良友农牧机械有限公司 | Coal dust pelletizing method |
| CN104910942B (en) * | 2015-05-14 | 2017-11-03 | 神雾科技集团股份有限公司 | A kind of revolving bed coal is catalyzed method for pyrolysis |
| CN106635217A (en) * | 2016-12-02 | 2017-05-10 | 北京神雾环境能源科技集团股份有限公司 | Formed coke and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062709A (en) * | 1991-11-16 | 1992-07-15 | 西安矿业学院 | Active carbon made by woody brown coal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB496680A (en) * | 1937-06-14 | 1938-12-05 | Viktor Skutl | Improvements in and relating to the briquetting of solid fuels |
| JPS6116992A (en) * | 1984-07-03 | 1986-01-24 | Agency Of Ind Science & Technol | Production of fuel briquette |
| CN1030933A (en) * | 1988-01-16 | 1989-02-08 | 长春煤炭科学研究所 | The moulding of brown coal binder free |
| CN102337167B (en) * | 2011-09-02 | 2014-08-13 | 千秋能源（上海）有限公司 | Technology for processing pulverized lignite |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1062709A (en) * | 1991-11-16 | 1992-07-15 | 西安矿业学院 | Active carbon made by woody brown coal |
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Inventor after: Han Weiguo Inventor after: Liang Haibin Inventor after: Wu Xinping Inventor after: Han Jingtao Inventor after: Han Jinglong Inventor before: Han Weiguo Inventor before: Wu Xinping Inventor before: Han Jingtao Inventor before: Han Jinglong |
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