CN101032702A - Technique of producing coke powder by using high pressure to roll pulverizer - Google Patents
Technique of producing coke powder by using high pressure to roll pulverizer Download PDFInfo
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- CN101032702A CN101032702A CNA2007100110726A CN200710011072A CN101032702A CN 101032702 A CN101032702 A CN 101032702A CN A2007100110726 A CNA2007100110726 A CN A2007100110726A CN 200710011072 A CN200710011072 A CN 200710011072A CN 101032702 A CN101032702 A CN 101032702A
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- coke
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- high pressure
- flour mill
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Abstract
The coke powder preparing process includes grinding crushed coke up to 25mm size or powdered coke in a high pressure roller pulverizer and controlling water content. The process is simple and environment friendly, and has low cost, low power consumption, no dust pollution, no water pollution, less consumed material and no noise pollution.
Description
Technical field
The invention discloses a kind of technology for preparing coke powder, particularly a kind of crushed coke and/or coke breeze with 0～25mm squeezes by the high pressure roller flour mill and grinds the technology of coke powder fully.
Background technology
At present, the technology of preparation coke powder mainly contains: (1) dry process coke powder technology, technological process be with coke breeze in pipeline is sent into dry ball, be blown into the hot waste gas of sending here by coke oven flue simultaneously, coke breeze is behind ball mill grinding, what granularity met the demands is taken out of by hot waste gas, and oarse-grained coke breeze continues to grind in ball mill, till meeting the demands.The coke powder of taking out of by hot waste gas respectively through: enter the finished product storage tank behind one-level cyclone dust collectors, second cyclone dust extractor, the sack cleaner, then send into the coaling system of coal blending and pulverizing.The finished product coke powder fineness be than higher (can reach 45～50% below 100 orders), this complex process, and investment is big, the operating cost height, the coke powder blending process is meticulous because of coke powder, and moisture is special low and dust pollution is serious.(2) wet method prepares the coke powder technology, technological process is that＜10mm coke breeze is sent into ball mill, and add a certain amount of water, behind the ball mill mixed grinding, coke powder is the form discharge of 40～50% slips with concentration, enter the pump pond through gravity line, send into thickener through the slag stock pump and carry out Separation of Solid and Liquid, send into belt vacuum filter then, the moisture content in the elimination slip, make moisture content reduce to 15～17%, filter cake is delivered to the coke powder canopy by ribbon conveyer and is stored; Filtrate enters pulverized coal preparation system via circulating pump and recycles from flowing into the filtrate accumulator tank.This technological equipment investment is still very big, and after the coke powder filtration, moisture content is still very high, is added to stove coal moisture content, and exists the water pollution problems.(3) vibrating mill prepares the coke powder technology, technological process is＜25mm crushed coke to be transported to stack in the band canopy yard and natural drying dewaters, crushed coke after the dehydration is delivered to the drying machine inner drying, from the flue gas of coke oven crushed coke being dried to moisture is about 10% to send in the vibrating mill, Cheng Fenhou, qualified finely-ground coke mixes with mixed coal, goes into stove and participates in coking.The vibrating mill of this technology needs often to fill rod iron and makes abrasive media, and the steel consumption amount is big and certain vibration noise is arranged, and the separate unit disposal ability is less than normal.
Summary of the invention
The present invention has passed through a large amount of tests, overcome deficiency of the prior art, provide a kind of and can reduce dust, water and noise pollution significantly, need not to consume medium and technological process is simple, power consumption is few, the less relatively employing high pressure roller flour mill of investment prepares the technology of coke powder.
The present invention is achieved by following technical proposal:
A kind of technology that adopts the high pressure roller flour mill to prepare coke powder, it is characterized in that: crushed coke and/or coke breeze are sent into be subjected to Jiao Keng, standing the feeding device control of burnt hole notch falls on the conveying equipment that is subjected under the Jiao Keng, when the moisture of crushed coke and/or coke breeze≤14%, directly send in the raw material tank by conveying equipment; When the moisture of crushed coke and/or coke breeze＞14%, deliver in the drying equipment by conveying equipment, feeding hot blast is dried to behind moisture≤14% again in conveying equipment is sent into raw material tank, crushed coke in the raw material tank and/or coke breeze are fed in the high pressure roller flour mill by the feeding device of raw material tank bottom, send into the storage of coke powder storage tank through squeezing after wearing into powder.
The moisture of dried crushed coke and/or coke breeze is 6～14%.
The granularity of described crushed coke and/or coke breeze is 0～25mm.
Hot blast in the described feeding drying equipment is the stack gases of coke oven or the hot waste gas of hot-blast stove.
The pressure roller pressure of described high pressure roller flour mill is 80～120MPa; The roll gap spacing is 2～5mm.
The pressure roller of described high pressure roller flour mill adopts the wear-resisting alloy steel material.
Compared with prior art, the present invention's advantage of adopting the high pressure roller flour mill to prepare the technology of coke powder is: reduced investment under simple, the identical output of technological process, power consumption are few, the coke powder discharging is pie, no dust pollution, production process need not to add water avoided to water body pollution, need not filled media, significantly reduced consumptive material, noise-less pollution.
The specific embodiment
Below by embodiment the present invention is further described:
The crushed coke of 0～25mm and/or coke breeze sent into be subjected to Jiao Keng, stand the feeding device control of burnt hole notch and fall on the conveying equipment that is subjected under the Jiao Keng.When the moisture of crushed coke and/or coke breeze≤14%, directly send in the raw material tank by conveying equipment; When the moisture of crushed coke and/or coke breeze＞14%, deliver in the drying equipment by conveying equipment, feed the stack gases of coke oven or the hot-air of hot-blast stove and carry out drying, the moisture of crushed coke and/or coke breeze is controlled at 6～14% after again in conveying equipment is sent into raw material tank.Crushed coke in the raw material tank and/or coke breeze are fed in the high pressure roller flour mill by the feeding device of raw material tank bottom, enter coke powder finished product storage tank after wearing into powder and store through squeezing once or twice.
This technology＞60 order coke powder flour extractions on average reach 80%.Discharging is shaped as the thick coke powder cake of 3～4mm, and it is that production capacity is 20t/h to the maximum about 45 ℃ that the high pressure roller flour mill produces the coke powder temperature.
The equipment that this technology adopted comprises drying machine, induction system, charging gear, high pressure roller flour mill.Drying machine, induction system, charging gear are the equipment of using always, the high pressure roller flour mill is to adopt JM65 type Pu Woer grinding machine, this equipment has been applied for Chinese utility model patent, the patent No. is ZL00224972, this equipment is the running roller that rolls by two constant speed rotations, and the material that enters is rolled.And, impose on running roller by loading bigger pressure of pouring weight generation, obtain the pressure that material is pulverized.
The performance parameter of JM65 type Pu Woer grinding machine: power of motor is 75kW, and pressure roller pressure is 80～120MPa, and the roll gap spacing is 2～5mm, and the design disposal ability is per hour 6～15 tons.
The pressure roller of described high pressure roller flour mill adopts the wear-resisting alloy steel material that contains manganese, chromium.
Embodiment 1
Treating capacity is 7.0t/h, from coke screening station come＜coke breeze of 10mm and the coke breeze of coke breeze sedimentation basin, transport in the band canopy yard by automobile and to stack respectively and the natural drying dehydration, crushed coke after the dehydration and coke breeze are sent into by wheel loader and are subjected to Jiao Keng.Be subjected to burnt hole notch that the electricity jaw formula gate that surges is set, crushed coke and coke breeze stand the ribbon conveyer under the Jiao Keng, deliver in the whizzer of diameter of phi 1200mm, length L=10000mm, feeding is from 200～250 ℃ of stack gases of coke oven, with moisture＞12%＜to be dried to moisture be about 8～12% to the coke breeze of 10mm, in conveyer is sent into raw material tank, feed in the high pressure roller flour mill by the batcher of raw material tank bottom, through secondary squeeze wear into powder after, enter the coke powder storage tank and store.The high pressure roller flour mill be Φ 200mm to roller diameter.The storage tank mouth is provided with an oscillating feeder, and qualified finely-ground coke is delivered to coaling system through the ribbon conveyer under the storage tank, mixes with mixed coal, goes into stove and participates in coking.
Embodiment 2
Treating capacity is 15t/h, from coke screening station come＜coke breeze of 10mm and the coke breeze of coke breeze sedimentation basin, transport in the band canopy yard by automobile and to stack respectively and the natural drying dehydration, the coke breeze after the dehydration is sent into by wheel loader and is subjected to Jiao Keng.Be subjected to burnt hole notch that the electricity jaw formula gate that surges is set, crushed coke and coke breeze stand the ribbon conveyer under the Jiao Keng, deliver to dry unit room.The electro-hydraulic dynamic three-way tripper is established on whizzer inlet top, can not enter whizzer when crushed coke does not need drying, directly sends into follow-up system through ribbon conveyer; When needing drying, crushed coke delivers in the whizzer of diameter of phi 2400mm, length L=22000mm, feeding is from 200～250 ℃ of stack gases of coke oven, with moisture＞10%＜to be dried to moisture be about 6～10% to the coke breeze of 25mm, send in the raw material tank through conveyer and single bucket elevator, connect the high pressure roller flour mill by the raw material tank bottom, through secondary squeeze wear into powder after, enter the coke powder storage tank and store.The high pressure roller flour mill be Φ 800mm to roller diameter.The storage tank mouth is provided with an oscillating feeder, and qualified finely-ground coke is delivered to coaling system through the ribbon conveyer under the storage tank, mixes with mixed coal, goes into stove and participates in coking.
Embodiment 3
Treating capacity is 15t/h, from coke screening station come＜coke breeze of 25mm and the coke breeze of coke breeze sedimentation basin, transport in the band canopy yard by automobile and to stack respectively and the natural drying dehydration, the coke breeze after the dehydration is sent into by wheel loader and is subjected to Jiao Keng.Be subjected to burnt hole notch that bulkhgead gate and electro-vibrating feeder are set, crushed coke and coke breeze stand the ribbon conveyer under the Jiao Keng, deliver to dry unit room.The electro-hydraulic dynamic three-way tripper is established on whizzer inlet top, can not enter whizzer when crushed coke does not need drying, directly sends into follow-up system through ribbon conveyer; When needing drying, crushed coke delivers in the whizzer of diameter of phi 2400mm, length L=22000mm, feeding is from 250～300 ℃ of hot waste gas of hot-blast stove, with moisture＞14%＜to be dried to moisture be about 10～14% to the coke breeze of 25mm, send in the raw material tank through conveyer and single bucket elevator, connect the high pressure roller flour mill by the raw material tank bottom, through secondary squeeze wear into powder after, enter the coke powder storage tank and store.The high pressure roller flour mill be Φ 800mm to roller diameter.The storage tank mouth is provided with disk feeder and ingredients belt, and qualified finely-ground coke is delivered to coaling system through the ribbon conveyer under the storage tank, mixes with mixed coal, goes into stove and participates in coking.
Claims (6)
1, a kind of technology that adopts the high pressure roller flour mill to prepare coke powder, it is characterized in that: crushed coke and/or coke breeze are sent into be subjected to Jiao Keng, standing the feeding device control of burnt hole notch falls on the conveying equipment that is subjected under the Jiao Keng, when the moisture of crushed coke and/or coke breeze≤14%, directly send in the raw material tank by conveying equipment; When the moisture of crushed coke and/or coke breeze＞14%, deliver in the drying equipment by conveying equipment, feeding hot blast is dried to behind moisture≤14% again in conveying equipment is sent into raw material tank, crushed coke in the raw material tank and/or coke breeze are fed in the high pressure roller flour mill by the feeding device of raw material tank bottom, send into the storage of coke powder storage tank through squeezing after wearing into powder.
2, a kind of technology that adopts the high pressure roller flour mill to prepare coke powder according to claim 1, it is characterized in that: the moisture of dried crushed coke and/or coke breeze is 6～14%.
3, a kind of technology that adopts the high pressure roller flour mill to prepare coke powder according to claim 1, it is characterized in that: the granularity of described crushed coke and/or coke breeze is 0～25mm.
4, a kind of technology that adopts the high pressure roller flour mill to prepare coke powder according to claim 1 is characterized in that: the hot blast in the described feeding drying equipment is the stack gases of coke oven or the hot waste gas of hot-blast stove.
5, a kind of technology that adopts the high pressure roller flour mill to prepare coke powder according to claim 1, it is characterized in that: the pressure roller pressure of described high pressure roller flour mill is 80～120MPa; The roll gap spacing is 2～5mm.
6, a kind of technology that adopts the high pressure roller flour mill to prepare coke powder according to claim 1 is characterized in that: the pressure roller of described high pressure roller flour mill adopts the wear-resisting alloy steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100110726A CN101032702A (en) | 2007-04-20 | 2007-04-20 | Technique of producing coke powder by using high pressure to roll pulverizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100110726A CN101032702A (en) | 2007-04-20 | 2007-04-20 | Technique of producing coke powder by using high pressure to roll pulverizer |
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| Publication Number | Publication Date |
|---|---|
| CN101032702A true CN101032702A (en) | 2007-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100110726A Pending CN101032702A (en) | 2007-04-20 | 2007-04-20 | Technique of producing coke powder by using high pressure to roll pulverizer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104646100A (en) * | 2015-01-14 | 2015-05-27 | 太原理工大成工程有限公司 | Method and device for crushing, screening and prestoring red coke in closed hot N2 heat preservation condition |
| CN106244190A (en) * | 2016-09-30 | 2016-12-21 | 湖南万通科技股份有限公司 | A kind of coke processing system and delayed coking equipment |
-
2007
- 2007-04-20 CN CNA2007100110726A patent/CN101032702A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104646100A (en) * | 2015-01-14 | 2015-05-27 | 太原理工大成工程有限公司 | Method and device for crushing, screening and prestoring red coke in closed hot N2 heat preservation condition |
| CN106244190A (en) * | 2016-09-30 | 2016-12-21 | 湖南万通科技股份有限公司 | A kind of coke processing system and delayed coking equipment |
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Open date: 20070912 |