CN102766497A - Lignite semi-coke powder shaping device - Google Patents
Lignite semi-coke powder shaping device Download PDFInfo
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- CN102766497A CN102766497A CN2012102237864A CN201210223786A CN102766497A CN 102766497 A CN102766497 A CN 102766497A CN 2012102237864 A CN2012102237864 A CN 2012102237864A CN 201210223786 A CN201210223786 A CN 201210223786A CN 102766497 A CN102766497 A CN 102766497A
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Abstract
The invention discloses a lignite semi-coke powder shaping device. According to the device, a spiral feeding unit is arranged blow a storage bin; lignite semi-coke powder and a dry powder binder are conveyed to a primary dual-shaft agitation and mixing unit connected with the spiral feeding unit; a reaction kettle is arranged above a primary dual-shaft agitation and mixing unit; water mist is sprayed and a liquid binder is injected by the reaction kettle for primary agitation and mixing, and the liquid binder is conveyed into a secondary dual-shaft agitation and mixing unit connected with the primary dual-shaft agitation and mixing unit; the secondary dual-shaft agnation and mixing unit executes secondary agitation and mixing of the lignite semi-coke powder; a planetary type edge mill is connected with the secondary dual-shaft agitation and mixing unit through a large dip angle belt feeder and an electric tee, and rolls materials which are secondarily mixed and agitated; a middle storage bin is connected with the planetary type edge mill through a first feeder and stores the rolled materials; and a high-pressure briquette machine is connected with the middle surge bin through a belt conveyer, and conveys the rolled materials into the high-pressure briquette machine to palletize.
Description
Technical field
Product-the semi-coke powder that the present invention relates to behind the brown coal drying is handled utilisation technology, in particular to a kind of lignite semi-coke powder shaped device.
Background technology
Traditional pulverized coal forming technology generally is applicable to the moulding of pulverized anthracite; Mainly be to utilize that the suitable binder configure is mixed with coal dust, conveying, moulding, dry this four main steps; Because the simple airborne dust of pulverized anthracite moulding is little, so utilize simple equipment and simple combination just can accomplish.For the lignite semi-coke powder; Its space is big, water-absorbent is strong, granularity is little, easy fragmentation; And airborne dust is bigger; Because the special property traditional technology and the method for semi-coke powder not only can not reach movement requirement with the semi-coke powder moulding, and can not continuous production, production process also can cause serious dust pollution.The contriver has found the sticker that is fit to through semi-coke powder character is carried out detailed research, improves traditional technology and makes its moulding of satisfying semi-coke powder, and reach extensive successive cleaner production.
Summary of the invention
The present invention provides a kind of lignite semi-coke powder shaped device, in order to moulding and the cleaner production continuously that realizes the lignite semi-coke powder.
For achieving the above object, the invention provides a kind of lignite semi-coke powder shaped device, it comprises: feed bin, screw feeder, first step twin shaft stirring mixer, second stage twin shaft stirring mixer, reaction kettle, planetary wheel roller and high pressure ball press, wherein
Screw feeder is arranged on and is used to hold the feed bin below of setting granularity particulate lignite semi-coke powder; The starchy binder of lignite semi-coke powder and injection proportional with it is sent into coupled first step twin shaft stirring mixer; Reaction kettle is arranged on first step twin shaft stirring mixer top, sprays into the water smoke that contains the first preset proportion moisture and injects the liquid-containing binder that contains the second preset proportion moisture by reaction kettle and carry out the first step and mix and send into the second stage twin shaft stirring mixer that is connected after the first step twin shaft stirring mixer after stirring;
The lignite semi-coke powder that second stage twin shaft stirring mixer mixes after stirring the first step carries out second stage mixing stirring;
Planetary wheel roller links to each other with second stage twin shaft stirring mixer with electric three passes through the high angle belt conveyer machine, and planetary wheel roller mixes stirred materials to the second stage that is got into by chute and rolls;
The intermediate buffering storehouse links to each other with planetary wheel roller through first transfer roller, with the material buffer memory after rolling;
The high pressure ball press links to each other with the intermediate buffering storehouse through rotary conveyor, and the material after rotary conveyor will roll is sent into the high pressure ball press, forms the pelletizing of moulding.
Further, above-mentioned lignite semi-coke powder shaped device also comprises:
Vertical drying oven links to each other with the high pressure ball press through second transfer roller, and second transfer roller is sent the pelletizing of moulding into vertical kiln dried.
Further, above-mentioned lignite semi-coke powder shaped device also comprises:
Surge bunker is arranged on feed bin and is used to hold before screening back setting granularity particulate lignite semi-coke powder, and links to each other with feed bin through worm conveyor, and lignite semi-coke powder is wherein sent into feed bin.
Further, first step twin shaft stirring mixer place is provided with cleaning apparatus.
Further, the number of planetary rolling wheel is 2,
The foregoing description rolls material and moisture, caking agent and additive thorough mixing, stranding, has increased the bulk density of material, and then realizes the moulding and the cleaner production continuously of lignite semi-coke powder through moulding, oven dry
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the lignite semi-coke powder shaped device synoptic diagram of one embodiment of the invention;
Fig. 2 is the lignite semi-coke powder moulding process schema of one embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not paying the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The present invention has carried out deep research to the principal element that influences the semicoke Moulding Process of Brown Coal: the shaping characteristic of semicoke slag charge, material moisture, raw meal particle size and size composition, sticker consumption, forming pressure, bake out temperature time curve, and surface property, hardness, fragility, elasticity, plasticity-, wear resistance, the ash fusion point of dregs formed coal detected.Control above-mentioned factor through strictness, semicoke brown coal briquette production equipment is carried out the combination arrangement of science, design the suitable binder formula and the supporting technological process of production.
Fig. 1 is the lignite semi-coke powder shaped device synoptic diagram of one embodiment of the invention.As shown in the figure, this lignite semi-coke powder shaped device comprises: feed bin 101, screw feeder 102, first step twin shaft stirring mixer 103, second stage twin shaft stirring mixer 104, reaction kettle 105, planetary wheel roller 106 and high pressure ball press 107, wherein
Twin shaft stirring mixer 104 pairs of first step in the second stage are mixed the lignite semi-coke powder after stirring and are carried out the second stage and mix stirring;
High pressure ball press 107 links to each other with intermediate buffering storehouse 108 through rotary conveyor, and the material after rotary conveyor will roll is sent into high pressure ball press 107, forms the pelletizing of moulding.
Mechanism between semicoke brown coal slag particle and the sticker is very complicated, comprises processes such as wetting, mass transfer, combination. and the bonding force between sticker and the bonded thing is the synthesis result of mechanical bond power and physical chemistry bonding force. for this nonpolar porous material of brown coal slag; The suction type is extremely strong; Mechanical bond power plays a decisive role. and brown coal dregs formed coal intensity is that sticker infiltrates in the coal intergranular crack dehydration, the result of solidifying the generation mechanically link. and in sticker dehydration, sclerosis, the consolidation process, moulded coal shrinks with moisture evaporation; Spacing of particle is from reducing; Broken diffusing resistance increases, and briquette strength increases. the gelinite of sticker aquation formation and the xln of various forms are all arranged in coal grain surface and the hole. and these gelinites and crystal are surrounded the coal grain, and are interconnected to form the crystal network; Thereby coal grain secure bond being become moulded coal together. gelinite is many more in the moulded coal; Bar-shaped, column and needle-like crystal are educated all the more, and it is even more to distribute, and then brown coal dregs formed coal intensity is high more.This material forming is difficult to, and under the technical experience basis of research and development for many years, the applicant has found art recognized, economically the acceptable prescription.Semicoke brown coal dregs formed coal average intensity can be greater than 20 kilograms.
Wherein, The twin shaft stirring mixer is the mixing whipping device to bulk material; Accomplish when adopting adjustable screw-blade that material is leapfroged in U type tube body to mix and stir (Best Times of mixing of materials is 5 minutes); Have that stirring capacity is strong, feed characteristics uniformly continuously, during spray into 4% moisture water smoke make two kinds of material humidifications; Get into the liquid-containing binder mixing stirring that contains 16% moisture of second stage twin shaft stirring mixer and reaction kettle preparation again.
The liquid adhesive production technique is following: earlier with water through being metered into reaction kettle, with pump the auxiliary agent of basin is pumped into again and is metered into reaction kettle in the elevated dosing vessel, start reaction kettle and stir (preferably being configured) 80 degrees centigrade of water temperatures.After stirring; Solid powder after will being measured by electricblock adds reaction kettle; Feeding steam-heated cal(l)andria to reaction kettle simultaneously reacts to certain temperature; Adhesive preparation finished after reaction was accomplished, and the sticker for preparing is for use in basin, injected first step twin shaft stirring mixer through under meter then.
The high pressure ball press is driven two pressure rollers through a pair of synchromesh gear and relatively rotates through belt, speed reduction unit by phonomoter; Because the light specific gravity of semicoke product, difficult forming is controlled in certain ratio range for guaranteeing material forming and compression ratio; Improve the initial strength of pelletizing; Be provided with the precompressed feeding machine, adopt in the precompressed feeding machine machinery to dial material and feeding device and the anti-blocking liner plate of high molecular abrasion-proof, thus realization even feeding, scaffold not; The molding materials of compacting is the demoulding smoothly under gravity and action of centrifugal force, and the particle of blind area returns stirring mixer by transfer roller.
Further, above-mentioned lignite semi-coke powder shaped device also comprises:
Vertical drying oven links to each other with the high pressure ball press through second transfer roller, and second transfer roller is sent the pelletizing of moulding into vertical kiln dried.
Vertical drying oven adopts the low reverse drying principles of the big air quantity of flow velocity; Adopting hotblast stove heating or stack gas or other thermal source is that drying medium is dried material; Mainly form by distributing belt machine, cloth trolley, drying oven main body, air feed blower fan, airduct, hotblast stove, gas blower, outfeed belt machine, temperature controller etc., can be with the drying materials of moisture≤20%.The moulded coal that the high pressure ball press is pressed into is sent into the cloth trolley on stoving oven top by rotary conveyor, and the cloth trolley evenly flows into moulded coal in the stove along chute, and air-flow is opposite with moulded coal heading; Moulded coal runs into the low hot blast of temperature on top, at first carry out low-temperature heat, and hot-air flow is opposite with moulded coal heading; Along with constantly operation downwards of moulded coal, the hot blast temperature that runs into is more and more high, and the moulded coal contained humidity is progressively volatilization under the baking of hot blast; Moisture is by constantly discharging, and after the body of heater high temperature section, hot blast temperature progressively reduces; Moulded coal also begins progressively to cool off, and last moulded coal is discharged through the outfeed belt machine by the bottom, and dried moulded coal is transported separately and put in storage.
The bulk density of semicoke brown coal slag is merely 0.5, thereby in Equipment Design, need take into full account a series of variations that bring because of volume of material is bigger.Again because the bulk density of semicoke brown coal slag is little, surfactivity is high, than characteristics such as coal easy firings, in the type selecting of tower stove, fully takes into account the characteristics of semicoke moulded coal, selects the bigger type of furnace of body of heater, adopts lower bake out temperature, assurance safety.Body of heater is bigger, has both helped the stable of production line, can also improve product percent of pass.
Fig. 2 is the lignite semi-coke powder moulding process schema of one embodiment of the invention.As shown in the figure, this moulding process may further comprise the steps:
Further, above-mentioned lignite semi-coke powder shaped device also comprises:
Surge bunker is arranged on and is used to hold the screening back before the feed bin and sets the granularity particle lignite semi-coke powder of (as sieving the following particulate semicoke of back 3mm product), and links to each other with feed bin through worm conveyor, and lignite semi-coke powder is wherein sent into feed bin.
Further, for overcoming the semicoke brown coal slag great problem of airborne dust in process of production, be provided with the dedusting closed system around the above-mentioned lignite semi-coke powder shaped device to guarantee cleaner production.。
Rolling is the best equipment of effect in stirring, and it is not only with material and moisture, caking agent and additive thorough mixing, and plays the effect that rolls of rubbing with the hands, and effect is above other whipping device.And it is, helpful to reducing moisture content and the moulding subsequently that to add because increased bulk density.
Mix stirred materials and get into planetary wheel roller through chute; To having mixed sticker and having pushed, rubbed with the hands stone roller, kneading through the preliminary material that stirs that mixes; Make sticker contain each other, permeate, fully combine, thereby reduce both division segregation phenomenons, improve the fusion of sticker and material with material; Increase the moulding plasticity of material, effective guarantee is provided to material forming.
Further, for making the production line non-stop run, the number of planetary rolling wheel is 2, carries out operation in turn, can be under the condition that meets the demands continuous production, and practiced thrift input of labor.
In addition, the applicant has carried out the comparative analysis of ash fusion point to semicoke brown coal slag and semicoke brown coal dregs formed coal, and the result is as shown in table 1:
Table 1
| DT (texturing temperature) | ST (softening temperature) | FT (melt temperature) | |
| Semicoke brown coal slag | 1112℃ | 1123℃ | 1141℃ |
| Semicoke brown coal dregs formed coal | 1109℃ | 1119℃ | 1131℃ |
Can find out that from table 1 added sticker and additive in the semicoke brown coal slag prescription all do not have big influence to ash fusion point.
One of ordinary skill in the art will appreciate that: accompanying drawing is the synoptic diagram of an embodiment, and module in the accompanying drawing or flow process might not be that embodiment of the present invention is necessary.
One of ordinary skill in the art will appreciate that: the module in the device among the embodiment can be described according to embodiment and be distributed in the device of embodiment, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging embodiment of the invention technical scheme of relevant art scheme.
Claims (5)
1. a lignite semi-coke powder shaped device is characterized in that, comprising: feed bin, screw feeder, first step twin shaft stirring mixer, second stage twin shaft stirring mixer, reaction kettle, planetary wheel roller and high pressure ball press, wherein
Said screw feeder is arranged on and is used to hold the said feed bin below of setting granularity particulate lignite semi-coke powder; The starchy binder of lignite semi-coke powder and injection proportional with it is sent into coupled said first step twin shaft stirring mixer; Said reaction kettle is arranged on said first step twin shaft stirring mixer top, sprays into the water smoke that contains the first preset proportion moisture and injects the liquid-containing binder that contains the second preset proportion moisture by said reaction kettle and carry out the first step and mix and send into the said second stage twin shaft stirring mixer that is connected after the said first step twin shaft stirring mixer after stirring;
The lignite semi-coke powder that said second stage twin shaft stirring mixer mixes after stirring the first step carries out second stage mixing stirring;
Said planetary wheel roller links to each other with said second stage twin shaft stirring mixer with electric three passes through the high angle belt conveyer machine, and said planetary wheel roller mixes stirred materials to the second stage that is got into by said chute and rolls;
Said intermediate buffering storehouse links to each other with said planetary wheel roller through first transfer roller, with the material buffer memory after rolling;
Said high pressure ball press links to each other with said intermediate buffering storehouse through rotary conveyor, and the material after said rotary conveyor will roll is sent into said high pressure ball press, forms the pelletizing of moulding.
2. lignite semi-coke powder shaped device according to claim 1 is characterized in that, also comprises:
Vertical drying oven links to each other with said high pressure ball press through second transfer roller, and said second transfer roller is sent the pelletizing of moulding into said vertical kiln dried.
3. lignite semi-coke powder shaped device according to claim 1 is characterized in that, also comprises:
Surge bunker is arranged on said feed bin and is used to hold before screening back setting granularity particulate lignite semi-coke powder, and links to each other with said feed bin through worm conveyor, and lignite semi-coke powder is wherein sent into said feed bin.
4. lignite semi-coke powder shaped device according to claim 1 is characterized in that, also comprises:
The dedusting closed system, be arranged on said lignite semi-coke powder shaped device around.
5. lignite semi-coke powder shaped device according to claim 1 is characterized in that the number of said planetary rolling wheel is 2.
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| CN2012102237864A CN102766497A (en) | 2012-06-28 | 2012-06-28 | Lignite semi-coke powder shaping device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103820186A (en) * | 2012-11-16 | 2014-05-28 | 辽宁绿地能源煤业有限公司 | Equipment for large-scale production of white briquettes and production method thereof |
| CN104109547A (en) * | 2014-06-26 | 2014-10-22 | 内蒙古鄂尔多斯电力冶金股份有限公司氯碱化工分公司 | Coke powder press ball device and coke powder press ball technology |
| CN104152204A (en) * | 2014-08-19 | 2014-11-19 | 安徽乾海环保科技有限公司 | Method for producing civil clean coal briquette by carbocoal and system for realizing method thereof |
| CN104741202A (en) * | 2015-02-03 | 2015-07-01 | 辽宁顺瑞秸秆制炭有限公司 | Biomass carbonized material forming machine set |
| CN104894369A (en) * | 2015-06-18 | 2015-09-09 | 宝钢发展有限公司 | Automatic proportioning system and control method for cold briquetting production line |
| CN105112942A (en) * | 2015-09-30 | 2015-12-02 | 济南海川投资集团有限公司 | Petroleum coke-manufactured aluminium electrolysis anode formed coke and preparing process and device thereof |
| CN105936839A (en) * | 2015-03-02 | 2016-09-14 | 喻以仁 | Method for manufacturing molded charcoal from lignitous coal powder |
| CN107083250A (en) * | 2017-06-15 | 2017-08-22 | 霍林郭勒市嘉华能源技术开发有限公司 | A kind of clean charcoal for roasting preparation method of lignite base semicoke |
| CN107653018A (en) * | 2017-08-28 | 2018-02-02 | 神木县中润商贸有限公司 | A kind of semi-coke pressure ball production line and semi-coke pressure ball production method |
| CN112295538A (en) * | 2020-09-11 | 2021-02-02 | 宁夏大明活性炭有限公司 | High-efficient former of active carbon |
| CN115303821A (en) * | 2022-07-05 | 2022-11-08 | 宁夏金海东泰洁能有限公司 | Semi coke end forming treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103820186A (en) * | 2012-11-16 | 2014-05-28 | 辽宁绿地能源煤业有限公司 | Equipment for large-scale production of white briquettes and production method thereof |
| CN104109547A (en) * | 2014-06-26 | 2014-10-22 | 内蒙古鄂尔多斯电力冶金股份有限公司氯碱化工分公司 | Coke powder press ball device and coke powder press ball technology |
| CN104152204A (en) * | 2014-08-19 | 2014-11-19 | 安徽乾海环保科技有限公司 | Method for producing civil clean coal briquette by carbocoal and system for realizing method thereof |
| CN104741202A (en) * | 2015-02-03 | 2015-07-01 | 辽宁顺瑞秸秆制炭有限公司 | Biomass carbonized material forming machine set |
| CN104741202B (en) * | 2015-02-03 | 2017-03-15 | 辽宁顺瑞秸秆制炭有限公司 | A kind of biomass carbonated raw material shaping machine set |
| CN105936839A (en) * | 2015-03-02 | 2016-09-14 | 喻以仁 | Method for manufacturing molded charcoal from lignitous coal powder |
| CN104894369A (en) * | 2015-06-18 | 2015-09-09 | 宝钢发展有限公司 | Automatic proportioning system and control method for cold briquetting production line |
| CN105112942A (en) * | 2015-09-30 | 2015-12-02 | 济南海川投资集团有限公司 | Petroleum coke-manufactured aluminium electrolysis anode formed coke and preparing process and device thereof |
| CN107083250A (en) * | 2017-06-15 | 2017-08-22 | 霍林郭勒市嘉华能源技术开发有限公司 | A kind of clean charcoal for roasting preparation method of lignite base semicoke |
| CN107653018A (en) * | 2017-08-28 | 2018-02-02 | 神木县中润商贸有限公司 | A kind of semi-coke pressure ball production line and semi-coke pressure ball production method |
| CN112295538A (en) * | 2020-09-11 | 2021-02-02 | 宁夏大明活性炭有限公司 | High-efficient former of active carbon |
| CN115303821A (en) * | 2022-07-05 | 2022-11-08 | 宁夏金海东泰洁能有限公司 | Semi coke end forming treatment system |
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Application publication date: 20121107 |