CN205228005U - Coal dressing equipment - Google Patents
Coal dressing equipment Download PDFInfo
- Publication number
- CN205228005U CN205228005U CN201521075672.5U CN201521075672U CN205228005U CN 205228005 U CN205228005 U CN 205228005U CN 201521075672 U CN201521075672 U CN 201521075672U CN 205228005 U CN205228005 U CN 205228005U
- Authority
- CN
- China
- Prior art keywords
- coal
- microwave
- unit
- sodium
- cleaning unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003245 coal Substances 0.000 title claims abstract description 221
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 112
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000005406 washing Methods 0.000 claims abstract description 25
- 238000004140 cleaning Methods 0.000 claims description 32
- 238000010438 heat treatment Methods 0.000 claims description 32
- 238000013467 fragmentation Methods 0.000 claims description 21
- 238000006062 fragmentation reaction Methods 0.000 claims description 21
- 238000012546 transfer Methods 0.000 claims description 6
- 235000007164 Oryza sativa Nutrition 0.000 claims description 4
- 235000009566 rice Nutrition 0.000 claims description 4
- 240000007594 Oryza sativa Species 0.000 claims 1
- 239000011734 sodium Substances 0.000 abstract description 109
- 229910052708 sodium Inorganic materials 0.000 abstract description 106
- 238000012216 screening Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000009833 condensation Methods 0.000 abstract 3
- 230000005494 condensation Effects 0.000 abstract 3
- 230000018044 dehydration Effects 0.000 abstract 1
- 238000006297 dehydration reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000001035 drying Methods 0.000 description 11
- 239000002245 particle Substances 0.000 description 11
- 230000008569 process Effects 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 238000011109 contamination Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 241000209094 Oryza Species 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 2
- 239000005695 Ammonium acetate Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229940043376 ammonium acetate Drugs 0.000 description 2
- 235000019257 ammonium acetate Nutrition 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000009616 inductively coupled plasma Methods 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- -1 abundant K Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000007942 carboxylates Chemical group 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
Landscapes
- Constitution Of High-Frequency Heating (AREA)
Abstract
The utility model relates to a matter field is carried to coal, discloses a coal dressing equipment, and this coal dressing equipment includes that the broken unit (2) of raw coal material loading unit (1), raw coal, screening unit (3), microwave put forward matter and take off sodium unit (4), coal washing unit (5), condensation heat exchanger (6) and clean coal storehouse (7), just along the flow direction of coal charge, the broken unit (2) of raw coal material loading unit (1), raw coal, screening unit (3), microwave carry that sodium unit (4) are taken off to matter and coal washing unit (5) connect gradually through the conveyer belt, condensation heat exchanger (6) and microwave are put forward matter and are taken off sodium unit (4) and be connected, condensation heat exchanger (6) are connected with clean coal storehouse (7) through the pipeline, coal washing unit (5) are connected with clean coal storehouse (7). The utility model provides a when coal dressing equipment utilizes microwave technology to take off sodium to high sodium coal dry dehydration had both reduced and has used high sodium coal to the harm of boiler, had promoted the calorific value of product coal again.
Description
Technical field
The utility model relates to coal upgrading field, particularly, relates to a kind of cleaning unit.
Background technology
High sodium coal refers to the coal that Na content is greater than 2 % by weight, and it is mainly distributed in the countries such as China, Australia, the U.S., Germany.The high sodium coal of China is mainly distributed in area, accurate east, Xinjiang.The accurate eastern coal reactivity in Xinjiang is good, easy after-flame.But due to the special physical geographic environment of coal-forming history and locality, in accurate eastern coal, the content of sodium is overall all more than 2 % by weight, and far above other regional steam coals, some mining areas producing coal is even up to more than 10 % by weight.The geographical position economic condition special due to Xinjiang and transportation condition, coal cannot be transported outward on a large scale, Xinjiang part power plant has started to mix burns the high sodium coal of part, but, Xinjiang power plant mixes and burns high sodium coal, find that large-area coking appears in overall boiler, heating surface booster phenomenon takes place frequently, and serious has had influence on the safe operation of boiler.From the constituent analysis of the slag taken out, containing alkalinous metals such as abundant K, Na inside the ash content of tube wall side, boiler of power plant uses high sodium coal and often occurs water-cooling wall slagging scorification, problem such as the contamination of high temperature superheater high temperature reheater pipe burn into convection heating surface dust stratification and transducer wall ' s abrasion etc.
At present the utilization of high sodium coal is mainly adopted to the method for mixing and burning the weak coal of contamination, but this control method can only slow down contamination, cannot tackle the problem at its root.Burning, slagging scorification dust stratification is serious over time for the boiler of high sodium coal, cleaning of must stopping.Therefore, high sodium coal carry Quality Research for improve its burning utilize time contamination have important practical significance and economic worth.
The electromagnetic wave of microwave to be frequency be 300M ~ 300GMHz, its direction and size do cyclically-varying in time, are a kind of electromagnetic waves with through characteristic.Conventional microwave frequency is 915MHz and 2450MHz.What heating using microwave utilized is dielectric loss principle, and because water is the material of strong absorption microwave, thus the loss factor of water is more much bigger than dry.Hydrone in material is polar molecule, and under microwave action, its polarity orientation changes along with the change of external electromagnetic field.Such as, the microwave of 915MHz can make hydrone motion per second 18.3 hundred million times, causes molecule sharply to rub, collides, and makes material produce thermalization and a series of process such as expanded and reach heating using microwave object.
Utility model content
The purpose of this utility model uses high sodium coal can not carry out the defect of de-sodium to high sodium coal to the harm of boiler and existing cleaning unit to overcome prior art, provide a kind of cleaning unit, the sodium in coal can be removed, the moisture in coal can also be removed, while the harm produced when reducing sodium element burning in coal, improve the calorific value of coal.
The cleaning unit that the utility model provides comprises raw coal feeding unit material, raw coal fragmentation cell, sieve unit, microwave upgrading take off sodium unit, coal washing unit, condensing heat exchanger and cleaned coal storehouse, and along the flow direction of coal charge, described raw coal feeding unit material, raw coal fragmentation cell, sieve unit, microwave upgrading are taken off sodium unit and are connected successively by conveyer belt with coal washing unit, described condensing heat exchanger and microwave upgrading take off sodium unit and are connected, described condensing heat exchanger is connected with cleaned coal storehouse by pipeline, and described coal washing unit is connected with cleaned coal storehouse.
Preferably, described sieve unit is connected with raw coal feeding unit material by conveyer belt.
Preferably, described cleaning unit also comprises deduster, and described deduster is connected with described cleaned coal storehouse.
Preferably, described microwave upgrading takes off sodium unit is the microwave tunnel kiln that heating using microwave cavity is composed in series.
More preferably, the top of described heating using microwave cavity is provided with energy feed-in mouth, and this energy feed-in mouth is connected with microwave source.
Further preferably, described energy feed-in mouth is connected with microwave source by waveguide.
Preferably, each heating using microwave cavity is 2.5-3.5 rice along the length of direction of transfer.
Preferably, the part of pipeline in cleaned coal storehouse connecting described condensing heat exchanger and described cleaned coal storehouse is wind-distributing pipe road.
Preferably, described cleaning unit also comprises the exhaust device be connected with described microwave tunnel kiln.
Drying and dehydrating while the cleaning unit that the utility model provides utilizes microwave treatment to carry out de-sodium to high sodium coal, had both reduced and has used high sodium coal to the harm of boiler, improved again the calorific value of product coal.Particularly, take off the microwave irradiation of sodium unit and follow-up coal washing by microwave upgrading, carried out effectively removing to the sodium contained by the high sodium coal meeting Sieving and casing, made high sodium coal become de-sodium coal, moisture in coal decreases after microwave irradiation simultaneously, and the calorific value of coal is promoted to some extent.Microwave is taken off the steam latent heat produced in sodium process and is recycled by condensing heat exchanger, can carry out drying, reach the object of cascaded utilization of energy to the cleaned coal after coal washing.And the cleaning unit that the utility model provides can carry out de-sodium to high sodium coal, possible principle is the existence that material body heat source is brought up in heating using microwave, change some migration gesture and migration potential gradient direction in conventional heating dry run, define the unique mechanism of microwave drying.Because the moisture dielectric loss in material is comparatively large, can microwave energy be absorbed in a large number and be converted into heat energy.Therefore, the intensification of material and evaporation are carried out in whole material simultaneously.On material surface, due to transpiration-cooled cause, make material surface temperature a little less than nexine temperature, simultaneously because internal batch produces heat, so that steam inside produces rapidly, mineralization pressure gradient.Initial aqueous rate is higher, and the impact that barometric gradient is got rid of moisture is larger, namely has one " pump " effect, orders about water shunting to surface, accelerates rate of drying.
And the utility model proves by experiment, above-mentioned this " pump " effect can either moisture in fast eliminating coal, alkali metal in coal such as sodium etc. can be removed again, reach and both improve coal calorific value, the object of the harm produced when reducing again sodium element burning in coal.
Other features and advantages of the utility model are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for description, is used from explanation the utility model, but does not form restriction of the present utility model with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the schematic diagram of a kind of cleaning unit preferred embodiment that the utility model provides.
Description of reference numerals
1 raw coal feeding unit material 2 raw coal fragmentation cell
3 sieve unit 4 microwave upgradings take off sodium unit
5 coal washing unit 6 condensing heat exchangers
7 cleaned coal storehouse 8 dedusters
A height sodium raw coal B is no more than the high sodium coal of 100mm
The high sodium coal D that C is greater than 100mm takes off sodium coal
E coal slime F gangue
Coal H cleaned coal in G
I dehumidifier steam J air
K condensed water L hot-air
M used heat air
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
In the utility model, described high sodium coal refers to the coal that Na content is greater than 2 % by weight, and preferably, the Na content in described high sodium coal is 2-10 % by weight.The sodium content of high sodium coal herein obtains according to the method test of GB/T4634-1996 or MT/T1074-2008.
The utility model provides a kind of cleaning unit, as shown in Figure 1, this cleaning unit comprises raw coal feeding unit material 1, raw coal fragmentation cell 2, sieve unit 3, microwave upgrading takes off sodium unit 4, coal washing unit 5, condensing heat exchanger 6 and cleaned coal storehouse 7, and along the flow direction of coal charge, described raw coal feeding unit material 1, raw coal fragmentation cell 2, sieve unit 3, microwave upgrading is taken off sodium unit 4 and is connected successively by conveyer belt with coal washing unit 5, described condensing heat exchanger 6 and microwave upgrading take off sodium unit 4 and are connected, described condensing heat exchanger 6 is connected with cleaned coal storehouse 7 by pipeline, described coal washing unit 5 is connected with cleaned coal storehouse 7.
In the utility model, described raw coal feeding unit material 1, raw coal fragmentation cell 2, sieve unit 3 and coal washing unit 5 can be all that the routine of this area is selected.Such as, described raw coal feeding unit material 1 can be belt conveyor, and described raw coal fragmentation cell 2 can be disintegrating machine, and described sieve unit 3 can be vibrating screen classifier, and described coal washing unit 5 can be coal washer.
According to the utility model, high sodium raw coal A carries out fragmentation through raw coal feeding unit material 1 on raw coal fragmentation cell 2, and the high sodium coal after fragmentation sieves in sieve unit 3, the high sodium coal C being divided into particle diameter to be no more than the high sodium coal B of 100mm and particle diameter being greater than 100mm.Determining next step operation according to the particle diameter of high sodium coal, is to better be taken off sodium effect like this.
According to the utility model, described sieve unit 3 is connected with raw coal feeding unit material 1 by conveyer belt.The high sodium coal C that particle diameter is greater than 100mm needs to carry out fragmentation further, so again will carry out follow-up operation through raw coal feeding unit material 1.The high sodium coal B that particle diameter is no more than 100mm can enter microwave upgrading and take off sodium unit 4 and carry out de-sodium.
According to the utility model, described microwave upgrading takes off the microwave tunnel kiln that sodium unit 4 can be composed in series for microwave heating chamber body.The number that the length of each heating using microwave cavity is multiplied by heating using microwave cavity is the length of microwave tunnel kiln.The length of microwave tunnel kiln can be arranged according to the installed capacity of the cleaning unit of reality, and it is easy to assembly, be convenient to installation and the transport of cleaning unit of the present utility model, make Recognition Applied in Coal Preparation System of the present utility model can be applicable to more workplace and condition.
In the utility model, the top of described heating using microwave cavity is provided with energy feed-in mouth, and this energy feed-in mouth is connected with microwave source.Preferably, described energy feed-in mouth is connected with microwave source by waveguide.Described microwave source is not arranged in heating using microwave cavity, but is arranged on outside heating using microwave cavity.Microwave energy is introduced in heating using microwave cavity by waveguide by described microwave source.
According to one preferred embodiment, the top of heating using microwave cavity is provided with energy feed-in mouth, this energy feed-in mouth is connected with microwave source by waveguide, this microwave source comprises magnetron, microwave energy is produced by this magnetron, by waveguide, microwave energy is sent to the energy feed-in mouth of heating using microwave cavity again, in heating using microwave cavity, coal is heated to make microwave energy.
In the utility model, the operating frequency of microwave source can be 915MHz, and the power of microwave source can be 10-75kW, is preferably 75kW.
In the utility model, each heating using microwave cavity can be determined according to the power of microwave source along the length of direction of transfer.Such as, when the operating frequency of described microwave source is 915MHz, when the power of described microwave source is 10-75kW, each heating using microwave cavity can be 2.5-3.5 rice along the length of direction of transfer, is preferably 2.5-3 rice.
Preferably, described microwave tunnel kiln also comprises microwave leakage restraining device, and this microwave leakage restraining device is arranged along direction of transfer in the porch of described microwave tunnel kiln and exit.This microwave leakage device can select related device any suitable in prior art according to actual needs, and the microwave absorption bar be such as made up of graphite carbon plate, the pectination be made up of alloy aluminum suppress bar and suppress frid etc.
According to the utility model, the high sodium coal B that the particle diameter after screening is no more than 100mm is entered microwave upgrading and takes off in sodium unit 4 and accept microwave irradiation and carry out de-sodium by conveyer belt.The tiling thickness accepting the high sodium coal of microwave irradiation can be 100-200mm.The transporting velocity of the high sodium coal in microwave tunnel kiln can be determined according to the length of microwave tunnel kiln, and the principle determined is 20-40 minute by the time controling of whole irradiation process.The compound of the sodium in the high sodium coal after irradiation or sodium separates out the surface to coal, obtains the de-sodium coal D of preliminary upgrading.
That is, the condition of described de-sodium comprises: the tiling thickness of high sodium coal can be 100-200mm; Temperature can be 100-150 DEG C, is preferably 100-120 DEG C; Time can be 20-40 minute.
According to one preferred embodiment, take off in sodium unit 4 in microwave upgrading, the water that particle diameter is no more than in the high sodium coal of 100mm is heated and is present in microwave tunnel kiln as water vapor, in order to improve drying effect, cleaning unit of the present utility model also comprises the exhaust device be connected with described microwave tunnel kiln, and the steam in microwave tunnel kiln can be discharged by this exhaust device.
Preferably, exhaust device carries out collection to steam and forms dehumidifier steam I, and described dehumidifier steam I is to condensing heat exchanger 6 heat supply.Dehumidifier steam I is cooled to condensed water through condensing heat exchanger 6, collects the heat discharged in this process, and air J is through condensing heat exchanger 6 and become hot-air L after absorbing this heat, and this hot-air L is supplied to cleaned coal storehouse 7.The temperature of described hot-air L can be 70-85 DEG C.
According to the utility model, high sodium coal enters coal washing unit 5 after de-sodium upgrading unit 4, the de-sodium coal D of preliminary upgrading is reduced the content of water-soluble sodium in de-sodium coal in the process of washing by the mode of washing, and be divided into coal slime E, gangue F, middle coal G and cleaned coal H further.Wherein, cleaned coal H is transported to cleaned coal storehouse 7, and the hot-air L utilizing condensing heat exchanger 6 to export carries out drying process to cleaned coal H.Wherein, the condition of described drying process comprises: temperature can be 70-85 DEG C, and the time can be 6-8 hour.Dried cleaned coal such as can be delivered to stockyard.
In the utility model, the part of pipeline in cleaned coal storehouse 7 connecting described condensing heat exchanger 6 and described cleaned coal storehouse 7 is wind-distributing pipe road, and hot-air carries out drying process by wind-distributing pipe road to the cleaned coal in cleaned coal storehouse.
According to the utility model, preferably, this cleaning unit also comprises deduster 8, and described deduster 8 is connected with described cleaned coal storehouse 7.Due in the used heat air M that produces in dry run containing a lot of impurity and dust, this used heat air is discharged after the purification of deduster 8.The actual conditions of purification process and step are that the routine of this area is selected, and do not repeat them here.
The one of the cleaning unit that the utility model provides is described preferred embodiment according to Fig. 1 below.
As shown in Figure 1, high sodium raw coal A enters raw coal fragmentation cell 2 by raw coal feeding unit material 1, high sodium raw coal A enters sieve unit 3 after the fragmentation of raw coal fragmentation cell 2, the high sodium coal C being divided into particle diameter to be no more than the high sodium coal B of 100mm and particle diameter being greater than 100mm, high sodium coal C turns back to raw coal feeding unit material 1 and enters raw coal fragmentation cell 2 and carry out again broken, high sodium coal B enters microwave upgrading and takes off in sodium unit 4 and carry out de-sodium upgrading, particularly, take off in sodium unit 4 in microwave upgrading, microwave energy is sent to the energy feed-in mouth of heating using microwave cavity by the microwave source being positioned at heating using microwave containment portion by waveguide, high sodium coal B in heating using microwave cavity is heated, the power of microwave source is 75kW, operating frequency is 915MHz.The compound of the sodium in the high sodium coal B after irradiation or the sodium surface of separating out to coal forms the de-sodium coal D of preliminary upgrading, and meanwhile, the water in high sodium coal B is heated and is present in as water vapor in microwave tunnel kiln.Exhaust device carries out collection to steam and forms dehumidifier steam I, and this dehumidifier steam I forms condensed water K through condensing heat exchanger 6, collects the heat discharged in this process, and air J absorbs after this heat through condensing heat exchanger 6 becomes hot-air L.
Microwave upgrading takes off the de-sodium coal D that sodium unit 4 exports and enters in coal washing unit 5 and carry out washing process, and is divided into coal slime E, gangue F, middle coal G and cleaned coal H further.Cleaned coal H enters cleaned coal storehouse 7.Condensing heat exchanger 6 carries hot-air L to cleaned coal storehouse 7, and hot-air carries out drying process by wind-distributing pipe road to the cleaned coal in cleaned coal storehouse.7 pairs, cleaned coal storehouse deduster 8 exports the used heat air produced in dry cleaned coal H process, and this used heat air is discharged after the purification of deduster 8.Dried cleaned coal is delivered to stockyard.
Below will be described in detail the utility model by embodiment.
In following examples, the performance test of product adopts following methods to carry out:
1) in the utility model coal charge, the assay method of sodium content is chemical fractionation method, and instrument is inductively coupled plasma atomic emission spectrometer (ICP-OES, Agilent 5100);
Particularly, the inorganic sodium using water extraction sodium salt and exist with water and ionic species, the organic sodium using ammonium acetate extraction water dissolubility sodium and exist with carboxylate form, the extraction of use watery hydrochloric acid appears at the organic sodium in nitrogenous in texture of coal or oxygen functional group with coordination mode, use nitric acid to clear up to measure insoluble sodium content to the solid residue after extraction;
2) air-dried basis adopts the method for GB/T4634-1996 to obtain;
3) the slagging scorification experiment of sedimentation furnace adopts one dimension sedimentation furnace to test.
Embodiment 1
The cleaning unit that the present embodiment provides for illustration of the utility model.The present embodiment adopts the equipment shown in Fig. 1.
High sodium raw coal A is entered raw coal fragmentation cell 2 by raw coal feeding unit material 1, after the fragmentation of raw coal fragmentation cell 2, enter sieve unit 3 sieve, the high sodium coal C that particle diameter is greater than 100mm enters raw coal fragmentation cell 2 and carries out again broken, and the high sodium coal B that particle diameter is no more than 100mm enters microwave upgrading and takes off in sodium unit 4.Being positioned at the external power of microwave heating chamber is 75kW, and operating frequency is microwave energy is sent to heating using microwave cavity top by the microwave source of 915MHz energy feed-in mouth by waveguide, heats the high sodium coal B in heating using microwave cavity.Wherein, heating using microwave cavity is 3 meters along the length of direction of transfer, and the number of heating using microwave cavity is 2.High sodium coal B is 0.2m/min in the transporting velocity that microwave upgrading takes off in sodium unit 4, and tiling thickness is 150mm, and the time of whole microwave irradiation is 30 minutes, and temperature is 120 DEG C.High sodium coal B takes off after sodium unit 4 through microwave upgrading and forms de-sodium coal D, and de-sodium coal D enters coal washing unit 5 subsequently.In washing process, the water-soluble sodium in de-sodium coal D is removed through washing, and be divided into coal slime E, gangue F, middle coal G and cleaned coal H further.
The exhaust device steam collected in microwave tunnel kiln is used to form dehumidifier steam I, dehumidifier steam I is to condensing heat exchanger 6 heat supply and form condensed water, collect the heat discharged in this process, air is through condensing heat exchanger 6 and become hot-air I after absorbing this heat, and the temperature of hot-air is 85 DEG C.
Cleaned coal H is transported to cleaned coal storehouse 7, and the hot-air L utilizing condensing heat exchanger 6 to export carries out drying process by wind-distributing pipe road to cleaned coal H.Wherein, the condition of described drying process comprises: temperature is 80 DEG C, and the time is 8 hours.Dried cleaned coal is delivered to stockyard.The used heat air produced in this dry run is discharged after the purification of deduster 8.
Get the dried cleaned coal of 2g adopting method of the present utility model to obtain and carry out sodium content mensuration.Particularly, sample to be tested is added to 15ml distilled water, 60 DEG C of constant temperature water baths continue filter after 20 hours and filtrate be transferred in 100ml volumetric flask.To residual solids, the watery hydrochloric acid of the ammonium acetate of 1mol/L, 1mol/L is adopted to repeat above-mentioned steps.Clear up after final residue dried with nitric acid.And digestion solution and above filtered fluid inductively coupled plasma atomic emission spectrometer (ICP-OES) are carried out the measuring and analysis of sodium content.
In the cleaned coal adopting method of the present utility model to obtain, total sodium content is 1400 μ g/g.By the slagging scorification experimental analysis of sedimentation furnace, this coal sample is shown as weak adhesive aggregation characteristic.
Comparative example 1
Get the coal sample of the air-dried basis of 2g height sodium raw coal, measure according to the assay method of sodium content in embodiment 1.
Total sodium content of the coal sample of high sodium raw coal is 2400 μ g/g.By the slagging scorification experimental analysis of sedimentation furnace, this coal sample is shown as strong adhesive aggregation characteristic.
As can be seen from the result of embodiment and comparative example, adopt the cleaning unit that the utility model provides, the sodium in high sodium coal effectively can be removed, sodium content is reduced to 1400 μ g/g by 2400 μ g/g.The result that coal sample carries out boiler scaling experiment shows, relative to the high sodium coal not carrying out de-sodium, the coal sample adopting equipment of the present utility model to obtain has lower adhesive aggregation characteristic.
Below preferred embodiment of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (9)
1. a cleaning unit, it is characterized in that, this cleaning unit comprises raw coal feeding unit material (1), raw coal fragmentation cell (2), sieve unit (3), microwave upgrading takes off sodium unit (4), coal washing unit (5), condensing heat exchanger (6) and cleaned coal storehouse (7), and along the flow direction of coal charge, described raw coal feeding unit material (1), raw coal fragmentation cell (2), sieve unit (3), microwave upgrading is taken off sodium unit (4) and is connected successively by conveyer belt with coal washing unit (5), described condensing heat exchanger (6) and microwave upgrading take off sodium unit (4) and are connected, described condensing heat exchanger (6) is connected with cleaned coal storehouse (7) by pipeline, described coal washing unit (5) is connected with cleaned coal storehouse (7).
2. cleaning unit according to claim 1, is characterized in that, described sieve unit (3) is connected with raw coal feeding unit material (1) by conveyer belt.
3. cleaning unit according to claim 1, is characterized in that, this cleaning unit also comprises deduster (8), and described deduster (8) is connected with described cleaned coal storehouse (7).
4. cleaning unit according to claim 1, is characterized in that, described microwave upgrading takes off the microwave tunnel kiln that sodium unit (4) is composed in series for heating using microwave cavity.
5. cleaning unit according to claim 4, is characterized in that, the top of described heating using microwave cavity is provided with energy feed-in mouth, and this energy feed-in mouth is connected with microwave source.
6. cleaning unit according to claim 5, is characterized in that, described energy feed-in mouth is connected with microwave source by waveguide.
7. the cleaning unit according to claim 5 or 6, is characterized in that, each heating using microwave cavity is 2.5-3.5 rice along the length of direction of transfer.
8. cleaning unit according to claim 1, is characterized in that, the part of pipeline in cleaned coal storehouse (7) connecting described condensing heat exchanger (6) and described cleaned coal storehouse (7) is wind-distributing pipe road.
9. cleaning unit according to claim 4, is characterized in that, described cleaning unit also comprises the exhaust device be connected with described microwave tunnel kiln.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521075672.5U CN205228005U (en) | 2015-12-22 | 2015-12-22 | Coal dressing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521075672.5U CN205228005U (en) | 2015-12-22 | 2015-12-22 | Coal dressing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205228005U true CN205228005U (en) | 2016-05-11 |
Family
ID=55903062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521075672.5U Active CN205228005U (en) | 2015-12-22 | 2015-12-22 | Coal dressing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205228005U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109127022A (en) * | 2018-09-03 | 2019-01-04 | 陈婧琪 | A kind of coal mine wash coaling equipment and its control circuit |
-
2015
- 2015-12-22 CN CN201521075672.5U patent/CN205228005U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109127022A (en) * | 2018-09-03 | 2019-01-04 | 陈婧琪 | A kind of coal mine wash coaling equipment and its control circuit |
| CN109127022B (en) * | 2018-09-03 | 2020-10-16 | 淮北市菲美得环保科技有限公司 | Coal washing equipment for coal mine and control circuit thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105402998A (en) | Coal dressing method | |
| CN203890292U (en) | Oilfield waste industrial treatment device co | |
| RU2659924C1 (en) | Solid carbon-containing waste pyrolysis utilization method and waste treatment system for its implementation | |
| CN105273733B (en) | A kind of coupling multi-stage subtracts the small particle low order pyrolytic process of coal and equipment of dirt | |
| TWI735346B (en) | Fly ash treatment method, methods for obtaining metal hydroxides and methods for the preparation of industrial salts | |
| CN105157399B (en) | The segmentation dehydration drying system of high humidity coal and using method thereof | |
| CN108503247A (en) | Industry by-product gypsum produces the method and apparatus of high temperature gypsum | |
| CN104762120B (en) | A kind of high sodium coal method for removing sodium and equipment | |
| CN104310318A (en) | Method for recovering sulphur through carrying out liquid-phase catalytic reduction on sulfur dioxide smoke | |
| CN104152163A (en) | Crushed coal pyrolysis and coke dry quenching method and device | |
| CN205228005U (en) | Coal dressing equipment | |
| CN102372410A (en) | Method for sludge dehydration and drying | |
| CN107663002A (en) | A kind of sludge method for cracking treatment and equipment | |
| CN108298796A (en) | A kind of oily sludge incineration treatment process | |
| CN202744434U (en) | Treatment device for sludge drying | |
| CN206244619U (en) | A kind of sludge treating system based on hydrothermal carbonization | |
| CN104197684B (en) | Can the superheat steam drying brown coal system of Water Sproading and process thereof | |
| CN201825832U (en) | Sludge dewatering-drying device system | |
| CN202968346U (en) | Conducting tube type sludge drying machine | |
| CN104789246B (en) | A kind of low order fine coal rotary drying process with dedusting | |
| CN209602363U (en) | A kind of device using brickkiln smoke residual heat to dry sludge | |
| CN209343792U (en) | Handle the process system of radioactivity debirs | |
| CN104774631B (en) | Dedusting technique of rotary furnace for producing blind coal from powder coal | |
| Krot et al. | The use of heat from the incineration of municipal solid waste for processing of phosphogypsum | |
| CN204944131U (en) | The segmentation dehydration drying system of high humidity coal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 100011 Beijing Dongcheng District, West Binhe Road, No. 22 Patentee after: CHINA ENERGY INVESTMENT Corp.,Ltd. Patentee after: CHINA ENERGY CONSERVATION AND EMISSION REDUCTION Co.,Ltd. Address before: 100011 Beijing, Dongcheng District Anwai Binhe West Road No. 22 Shenhua building Patentee before: SHENHUA GROUP Corp.,Ltd. Patentee before: CHINA ENERGY CONSERVATION AND EMISSION REDUCTION Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210425 Address after: 100011 Beijing Dongcheng District, West Binhe Road, No. 22 Patentee after: CHINA ENERGY INVESTMENT Corp.,Ltd. Patentee after: CHINA ENERGY CONSERVATION AND EMISSION REDUCTION Co.,Ltd. Patentee after: JINCI TECHNOLOGY INDUSTRIAL DEVELOPMENT Co.,Ltd. Address before: 100011 Beijing Dongcheng District, West Binhe Road, No. 22 Patentee before: CHINA ENERGY INVESTMENT Corp.,Ltd. Patentee before: CHINA ENERGY CONSERVATION AND EMISSION REDUCTION Co.,Ltd. |