CN204853531U - Dusting of dry process fine sizing and equipment that changes coal ash melting characteristic - Google Patents

Dusting of dry process fine sizing and equipment that changes coal ash melting characteristic Download PDF

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Publication number
CN204853531U
CN204853531U CN201520446803.XU CN201520446803U CN204853531U CN 204853531 U CN204853531 U CN 204853531U CN 201520446803 U CN201520446803 U CN 201520446803U CN 204853531 U CN204853531 U CN 204853531U
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China
Prior art keywords
coal
ash
equipment
dust classifier
coal dust
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CN201520446803.XU
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Chinese (zh)
Inventor
李邦雄
杨友
张成海
张世浩
郭然
丁燕
樊广燕
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HENAN JINKAI CHEMICAL INVESTMENT HOLDING GROUP Co Ltd
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HENAN JINKAI CHEMICAL INVESTMENT HOLDING GROUP Co Ltd
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Abstract

The utility model provides a dusting of dry process fine sizing and equipment that changes coal ash melting characteristic, belongs to the coal technology field, including coal pulverizer, coal dust classifier and high -temperature gas generator, being equipped with import of raw materials coal and the export of raw materials coal on the coal pulverizer, being located raw materials coal export below and being equipped with the high -temperature gas import, the raw materials coal export of coal pulverizer is connected with the material inlet piping of coal dust classifier, and the gas feed of coal pulverizer and the export pipeline of high -temperature gas generator are connected. The separation of high ash content, low ash content raw materials has been realized to this equipment, has changed the raw materials ash composition and then has changed the melting characteristic of coal ash, also is favorable to the hierarchical utilization of raw materials simultaneously, full play economic benefits, and equipment is simple, convenient to use, rational in infrastructure and area is little, realizes effective stage treatment to the raw materials, and application prospect is wide.

Description

The equipment of the ash disposal of a kind of dry method fine sizing and change coal ash
Technical field
The utility model belongs to colliery engineering field, is specifically related to the equipment of the ash disposal of a kind of dry method fine sizing and change coal ash.
Background technology
Small grain size, high ash content, the application of high-ash-fusion coal in the industry such as chemical industry, electric power are difficult points always, and its main cause is: (1) granularity is little, often need the corollary equipment such as pneumatic convey, drier just can be employed; (2) ash content is high, is difficult to make equipment reach design production capacity, and heat loss is large, and utilization rate of equipment and installations is low, and energy resource consumption is high, and lime-ash carbon residue is high; (3) ash fusion point is high, is difficult to application in the chemical industry equipment of slag tap.
Summary of the invention
The purpose of this utility model is to provide the ash disposal of a kind of dry method fine sizing and changes the equipment of coal ash.
Based on above-mentioned purpose, the utility model takes following technical scheme: the equipment of the ash disposal of a kind of dry method fine sizing and change coal ash, it is characterized in that, comprise coal pulverizer, coal dust classifier and gas heater, coal pulverizer is provided with feed coal import and feed coal outlet, described feed coal outlet is connected with the material inlet of coal dust classifier by hot blast conveying pipe, and feed coal outlet is provided with hot wind inlet with the junction of hot blast conveying pipe, and hot wind inlet connects the gas outlet of gas heater.
The top of described coal dust classifier is provided with exhaust outlet, and this exhaust outlet imports the air inlet of gas heater after being connected successively by pipeline and bag filter, circulating fan.
Connecting pipe between described bag filter and circulating fan is provided with relief valve.
Second level coal dust classifier is in series with between described coal dust classifier and bag filter, the material inlet of second level coal dust classifier connects the exhaust outlet of previous stage coal dust classifier by pipeline, the exhaust outlet of second level coal dust classifier is connected with bag filter by pipeline.
The bottom of described coal dust classifier, bag filter, second level coal dust classifier is equipped with material outlet, and the below of its material outlet is equipped with metering tank.
The object arranging circulating fan is reheated by the gas of separation to recycle on the one hand, device interior conduit is made to produce negative pressure on the one hand, namely the feed coal outlet of coal pulverizer forms negative pressure with the connecting pipe of the material inlet of coal dust classifier is interior, thus is delivered to smoothly in coal dust classifier by the feed coal after pulverizing.
The object arranging coal dust classifier is that the feed coal of pulverizing is carried out classification separation, the number of times of concrete classification can adjust according to the situation of feed coal, according to separation of material because granularity is different, contained ash content is different, thus realize ash separation, each grade of isolated gas-solid mixture enters next stage and is separated further, more down classification, the granularity of the raw material obtained can be thinner, the effect of classification is also better, and preferably two, cyclone separator in the utility model, reaches the effect of classification on the one hand, also save equipment on the other hand, cost-saving.
In the utility model, gas heater comprises direct heating (as electrical heating) equipment, also comprises the firing equipment utilizing industrial high temperature waste gas to carry out indirect heat exchange.
Compared with prior art, the beneficial effects of the utility model are:
1) this equipment achieves the separation of high ash content, low ash content raw material, changes raw material ash composition and then changes coal ash, realizes effective classification process simultaneously, be also conducive to the classified utilization of raw material, give full play to economic benefit raw material;
2) this equipment can make full use of waste gas, low grade heat energy, realizes the cascade utilization of resource, achieves raw material drying simultaneously, improves raw material grade and value; Compared with wet ash removal, do not need water, water-saving result is obvious;
3) this equipment is simple, easy to use, rational in infrastructure and floor space is little, has a extensive future.
Accompanying drawing explanation
Fig. 1 structural representation of the present utility model;
Fig. 2 is the structural representation of coal dust classifier in the utility model.
Detailed description of the invention
The equipment of the ash disposal of a kind of dry method fine sizing and change coal ash, as shown in Figure 1, comprise coal pulverizer 1, coal dust classifier 2 and gas heater 4, coal pulverizer 1 is provided with feed coal import 101 and feed coal outlet 102, feed coal outlet 102 is connected with the material inlet of coal dust classifier 2 by hot blast conveying pipe 9, feed coal outlet 102 is provided with hot wind inlet 103 with the junction of hot blast conveying pipe 9, and hot wind inlet 103 connects the gas outlet of gas heater 4.
The top of coal dust classifier 2 is provided with exhaust outlet, and this exhaust outlet imports the air inlet of gas heater after being connected successively by pipeline and bag filter 5, circulating fan 6.Connecting pipe between bag filter 5 and circulating fan 6 is provided with relief valve 8.
Second level coal dust classifier 3 is in series with between described coal dust classifier 2 and bag filter 5, the material inlet of second level coal dust classifier 3 connects the exhaust outlet of previous stage coal dust classifier 2 by pipeline, the exhaust outlet of second level coal dust classifier 3 is connected with bag filter 5 by pipeline.The bottom of described coal dust classifier 2, second level coal dust classifier 3, bag filter 5 is equipped with material outlet, and the below of its material outlet is equipped with metering tank 7.
The coal dust classifier 2 adopted in the utility model and coal dust classifier 3 are efficient cyclone, the structure of efficient cyclone as shown in Figure 2, the cyclonic separation cone 3-2 comprising cylindrical shell 3-1 and be communicated with cylindrical shell 3-1 bottom, cyclonic separation cone 3-2 bottom is provided with discharging opening 3-15, is provided with collector 3-3 below discharging opening 3-15.
Cylindrical shell is provided with air inlet 3-4 and gas outlet 3-8, central row tracheae 3-12 is provided with in cylindrical shell, the gas outlet of central row tracheae 3-12 arranges upper conical bucket 3-13 along cylindrical shell axially spaced-apart, inferior pyramidal bucket 3-14, diffuser casing 3-7 is formed between two cone tanks, the lower pyramid mouth of inferior pyramidal bucket 3-14 is connected with the gas outlet of central row tracheae 3-12, the top of upper conical bucket 3-13 is provided with rotary separator, rotary separator comprises rotating separation impeller 3-6, rotating shaft 3-5, meshing gear 3-11, shaft coupling 3-10 and motor 3-9, rotating separation impeller 3-6 is by rotating shaft 3-5, meshing gear 3-11 is connected with motor 3-9 with shaft coupling 3-10, rotating separation impeller 3-6 stretches out the lower pyramid mouth of upper conical bucket 3-13, be positioned at diffuser casing 3-7.
This efficient cyclone separation process is: first granularity larger particles enters in lower tank 3-3 after centrifugation, and less particle enters diffuser casing 3-7 with air-flow; In diffuser casing 3-7, be entrained with the air-flow of granule (medium size and small grain size) through uniform reduction of speed, a part (small grain size) is taken away by air-flow and is entered rotary separator, and (medium size) is separated falls into rotary separator lower cone section for a part; Can discharging-material size be controlled by the rotating speed adjusting rotary separator, effectively realize the grading of material.
The groundwork process of this equipment is:
1) feed coal adopts coal pulverizer to be milled to the coal grain that granularity is 50 μm ~ 1.0mm;
2) the coal grain adopting the air-flow of 150 ~ 350 DEG C step 1) to be obtained blows to coal grain and is carried out the second-order separation by a coal dust classifier for airflow blow to two series connection;
3) material of discharging from coal dust classifier is collected, and adopt bag filter to filter to the air-flow of overflowing from coal dust classifier, gas part emptying after filtration, the air inlet that another part imports gas heater 4 enters step 2 after gas heater 4 heats) middle circulation.

Claims (5)

1. the equipment of dry method fine sizing ash disposal and change coal ash, it is characterized in that, comprise coal pulverizer, coal dust classifier and gas heater, coal pulverizer is provided with feed coal import and feed coal outlet, described feed coal outlet is connected with the material inlet of coal dust classifier by hot blast conveying pipe, feed coal outlet is provided with hot wind inlet with the junction of hot blast conveying pipe, and hot wind inlet connects the gas outlet of gas heater.
2. the equipment of dry method fine sizing ash disposal as claimed in claim 1 and change coal ash, it is characterized in that, the top of described coal dust classifier is provided with exhaust outlet, and this exhaust outlet imports the air inlet of gas heater after being connected successively by pipeline and bag filter, circulating fan.
3. the equipment of dry method fine sizing ash disposal as claimed in claim 2 and change coal ash, it is characterized in that, the connecting pipe between described bag filter and circulating fan is provided with relief valve.
4. the equipment of dry method fine sizing ash disposal as claimed in claim 3 and change coal ash, it is characterized in that, second level coal dust classifier is in series with between described coal dust classifier and bag filter, the material inlet of second level coal dust classifier connects the exhaust outlet of previous stage coal dust classifier by pipeline, the exhaust outlet of second level coal dust classifier is connected with bag filter by pipeline.
5. the equipment of dry method fine sizing ash disposal as claimed in claim 4 and change coal ash, it is characterized in that, the bottom of described coal dust classifier, bag filter, second level coal dust classifier is equipped with material outlet, and the below of its material outlet is equipped with metering tank.
CN201520446803.XU 2015-06-26 2015-06-26 Dusting of dry process fine sizing and equipment that changes coal ash melting characteristic Active CN204853531U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520446803.XU CN204853531U (en) 2015-06-26 2015-06-26 Dusting of dry process fine sizing and equipment that changes coal ash melting characteristic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520446803.XU CN204853531U (en) 2015-06-26 2015-06-26 Dusting of dry process fine sizing and equipment that changes coal ash melting characteristic

Publications (1)

Publication Number Publication Date
CN204853531U true CN204853531U (en) 2015-12-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104976633A (en) * 2015-06-26 2015-10-14 河南晋开化工投资控股集团有限责任公司 Method and device for conducting dry process fine grain screening dusting and changing melting characteristic of coal ash

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104976633A (en) * 2015-06-26 2015-10-14 河南晋开化工投资控股集团有限责任公司 Method and device for conducting dry process fine grain screening dusting and changing melting characteristic of coal ash
CN104976633B (en) * 2015-06-26 2017-08-29 河南晋开化工投资控股集团有限责任公司 A kind of dry method fine sizing ash disposal and the method and apparatus for changing coal ash

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