CN1284536A - Two-stage process for producing large-lump cold pressed coke briquette - Google Patents
Two-stage process for producing large-lump cold pressed coke briquette Download PDFInfo
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- CN1284536A CN1284536A CN 00122957 CN00122957A CN1284536A CN 1284536 A CN1284536 A CN 1284536A CN 00122957 CN00122957 CN 00122957 CN 00122957 A CN00122957 A CN 00122957A CN 1284536 A CN1284536 A CN 1284536A
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Abstract
The two-stage coke briquette producing process features that large-lamp coal briquette is made through the steps of crushing, wind selection in erect pipe, high temperature pretreatment of coal material in 3-5 mm size in fluidized equipment, cooling of hot coal powder in the efficient rotary cylinder cooler, mixing with bituminite and middle temperature asphalt as well as coal tar as binder in a mixer, heating and kneading of the mixture in a kneading machine and punching; and then carbonated in internally-heated inclined-bottom carbonating furnace to obtain large-lump cold pressed coke briquette. The present invention has the advantages of being applicable to various kinds of coal, including various non-adhesive and less-adhesive coal.
Description
The present invention relates to fluidized-bed pre-treatment, the briquetting of fine coal, the technical field, particularly two-stage process for producing large-lump cold pressed coke briquette of charing.
Traditional cold briquetting process production lumpiness is during greater than 100mm bulk formed coke, the general method of using feed coal directly to allocate into, rely on pitch, tar class binding agent to be pressed into moulded coal afterwards, adopt the slower external-heat charring furnace of charing rate to refine into formed coke, be called one-stage process formed coke charring process at a slow speed.This technology is narrower to the scope of application of coal, can only use the dark coal of medium metamorphic grade or metamorphic grade, and when using metamorphic grade is more shallow, volatile matter is high non-adhesive or weak caking coal to prepare formed coke, easily cracks then difficult the utilization; In addition, because CARBONIZATION OF BRIQUETTES speed is slow, carbonization time is long, and the charring furnace hole count is more, and floor space is big, investment is high.
Internal heat type wedged bottom charring furnace since during charing high temperature gas flow enter between the bulk moulded coal, and charing atmosphere is certain oxidisability, CARBONIZATION OF BRIQUETTES rely on heat that the part scaling loss on the raw gas burning that self produces and moulded coal top layer produces to moulded coal heat, charing, promptly so-called " internal heat type " charring furnace; Therefore charing rate is fast, and carbonization time is short, only is 1～2h.Adopt internal heat type wedged bottom charring furnace, it is many to overcome above-mentioned external-heat charring furnace body of heater hole count, and floor space is big, the deficiency that the body of heater investment is high; But this type of furnace requires more strict, harsh for the coal of using, only be applicable to the old hard coal production bulk formed coke that metamorphic grade is dark, is referred to as one-stage process formed coke fast charring technology.
The objective of the invention is, for solving above-mentioned one-stage process technology coal narrow application range, problem that utilization ratio is low, increased the high temperature pretreatment process, the main raw material coal of producing formed coke is carried out the high temperature pre-treatment, adopt internal heat type wedged bottom charring furnace fast charring to become the bulk formed coke, and a kind of two-stage process for producing large-lump cold pressed coke briquette is provided.
Technology contents of the present invention is summarized as follows:
A kind of two-stage process for producing large-lump cold pressed coke briquette, it is characterized in that: the main raw material coal that is utilized is pulverized, carry out selection by winnowing through uprise, enter fluidizing apparatus less than the coal charge of 3～5mm granularity and carry out the high temperature pre-treatment, 700～900 ℃ of temperature, the hot coal powder is cooled to below 150 ℃ by efficient revolving drum water cooler afterwards, again with bituminous coal, mid-temperature pitch cooperates, material is through the mixer mixing and allocate the coal tar binding agent into, heat through kneading machine, mix and pinch, adopting impact molding machine to be suppressed into the bulk moulded coal, is large-lump cold pressed coke briquette through the charing of internal heat type wedged bottom charring furnace.
Advantage of the present invention is: the scope of application of coal is wide, is applicable to all non-adhesives or weak caking coal; The utilization ratio height of non-adhesive or weak caking coal.The formed coke lumpiness of this explained hereafter is greater than 110mm, and every physical and chemical index meets foundry coke standard GB 8729-88 requirement, therefore can substitute routine casting Jiao, is used for mechanical industry foundry enterprise melting iron and uses.
Fig. 1 is a two-stage process for producing large-lump cold pressed coke briquette process synoptic diagram.
Embodiment 1:
The two-stage process for producing large-lump cold pressed coke briquette process sees Fig. 1 for details.
At first pulverize with 1 pair of feed coal that is utilized of pulverizer, join uprise 4 by feed bin 2 and worm conveyor 3 it is carried out the gas screening, the coal dust that sieves out less than 3～5mm granularity requirements is joined in the fluidizing furnace 9 by cyclonic separator 5, air locking device 6, feed bin 7, worm conveyor 8, coarse particles is discharged by the uprise bottom, turns back to feed coal by transportation equipment.The coal dust that enters fluidizing furnace relies on self to burn and is heated to 700～900 ℃ of temperature, and the burning required air is supplied with by blower fan 18, and the coal dust volatile matter is reduced, and with efficient revolving drum water cooler 11 coal dust is cooled to 150 ℃ at last.
Formed coke is produced required other two kinds of raw materials---and bituminous coal, mid-temperature pitch are after feed bin 13,16, feeding machine 14,15 cooperate, pulverize by pulverizer 17, add in the biaxial mixing machine 19 with cooled coal dust, spray into the coal tar binding agent of supplying with by tar pump 12 at this, after mixing of materials is even, enter vertical type steam kneading machine 20, with steam material is heated, mixes and pinch, have certain plasticity and viscous mixture material and be pressed into columniform bulk moulded coal with impact molding machine 21.
Moulded coal fast charring in internal heat type wedged bottom charring furnace 22 is the bulk formed coke.
Embodiment 2:
The high temperature pre-treatment can also adopt circulating fluidized bed to finish.All the other are with embodiment 1.
Embodiment 3:
The high temperature pre-treatment can also adopt spouted bed to finish.All the other are with embodiment 1.
This technology is applicable to coals such as hard coal, meager coal, lean coal, weakly caking coal, non-caking coal.
Claims (2)
1. two-stage process for producing large-lump cold pressed coke briquette.It is characterized in that: the main raw material coal that is utilized is pulverized, carry out selection by winnowing through uprise, enter fluidizing apparatus less than the coal charge of 3～5mm granularity and carry out the high temperature pre-treatment, 700～900 ℃ of temperature, the hot coal powder is cooled to below 150 ℃ by efficient revolving drum water cooler afterwards, cooperate with bituminous coal, mid-temperature pitch again, material is through the mixer mixing and allocate coal tar into, through kneading machine heating, mixed pinching, adopting impact molding machine to be suppressed into the bulk moulded coal, is large-lump cold pressed coke briquette through the charing of internal heat type wedged bottom charring furnace.
2. two-stage process for producing large-lump cold pressed coke briquette according to claim 1.It is characterized in that: the coal charge of this technology also can adopt: fluidizing furnace, circulating fluidized bed, spouted bed carry out the pretreated method of high temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00122957A CN1114675C (en) | 2000-09-01 | 2000-09-01 | Two-stage process for producing large-lump cold pressed coke briquette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00122957A CN1114675C (en) | 2000-09-01 | 2000-09-01 | Two-stage process for producing large-lump cold pressed coke briquette |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1284536A true CN1284536A (en) | 2001-02-21 |
| CN1114675C CN1114675C (en) | 2003-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN00122957A Expired - Fee Related CN1114675C (en) | 2000-09-01 | 2000-09-01 | Two-stage process for producing large-lump cold pressed coke briquette |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101822953A (en) * | 2009-03-03 | 2010-09-08 | 哈尔滨瑞格能源环境技术发展有限责任公司 | Method for mixing two or more high-temperature solid materials |
| CN101225339B (en) * | 2007-12-18 | 2011-08-24 | 陈善堂 | Formed coke clean production equipment |
| CN101456745B (en) * | 2007-12-11 | 2011-12-21 | 沈阳铝镁设计研究院有限公司 | Calcining filler processing method and system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039051A (en) * | 1988-07-01 | 1990-01-24 | 赵庆纯 | Inorganics bonding formed coke (coal) and moulding process thereof |
| CN1155570A (en) * | 1996-12-11 | 1997-07-30 | 曹锐 | Process for shaped cokes |
-
2000
- 2000-09-01 CN CN00122957A patent/CN1114675C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456745B (en) * | 2007-12-11 | 2011-12-21 | 沈阳铝镁设计研究院有限公司 | Calcining filler processing method and system |
| CN101225339B (en) * | 2007-12-18 | 2011-08-24 | 陈善堂 | Formed coke clean production equipment |
| CN101822953A (en) * | 2009-03-03 | 2010-09-08 | 哈尔滨瑞格能源环境技术发展有限责任公司 | Method for mixing two or more high-temperature solid materials |
| CN101822953B (en) * | 2009-03-03 | 2014-04-02 | 哈尔滨瑞格能源环境技术发展有限责任公司 | Method for mixing two or more high-temperature solid materials |
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| Publication number | Publication date |
|---|---|
| CN1114675C (en) | 2003-07-16 |
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Granted publication date: 20030716 Termination date: 20100901 |