CN116274277A - Method for preparing ultrafine silicon carbon filler by utilizing oil shale waste gas and waste residues - Google Patents
Method for preparing ultrafine silicon carbon filler by utilizing oil shale waste gas and waste residues Download PDFInfo
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- CN116274277A CN116274277A CN202310304147.9A CN202310304147A CN116274277A CN 116274277 A CN116274277 A CN 116274277A CN 202310304147 A CN202310304147 A CN 202310304147A CN 116274277 A CN116274277 A CN 116274277A
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- 239000004058 oil shale Substances 0.000 title claims abstract description 45
- 239000002699 waste material Substances 0.000 title claims abstract description 38
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 239000000945 filler Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000002912 waste gas Substances 0.000 title claims abstract description 23
- 239000007789 gas Substances 0.000 claims abstract description 31
- 238000000197 pyrolysis Methods 0.000 claims abstract description 22
- 239000008234 soft water Substances 0.000 claims abstract description 11
- 238000000227 grinding Methods 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 239000000428 dust Substances 0.000 claims description 24
- 239000002245 particle Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- 239000003546 flue gas Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 239000002910 solid waste Substances 0.000 abstract description 11
- 238000003763 carbonization Methods 0.000 abstract description 10
- 239000006227 byproduct Substances 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 description 10
- 239000003245 coal Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000010902 jet-milling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000003079 shale oil Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
- B09B3/35—Shredding, crushing or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
- B02C19/186—Use of cold or heat for disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
- B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
- B09B3/45—Steam treatment, e.g. supercritical water gasification or oxidation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G1/00—Steam superheating characterised by heating method
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Food Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Silicon Compounds (AREA)
Abstract
The invention provides a method for preparing ultrafine silicon carbon filler by utilizing waste gas and waste residues of oil shale, which belongs to a treatment method of oil shale and comprises the following steps: s1: the boiler prepares superheated steam by burning dry distillation waste gas generated during dry distillation of the oil shale; s2: introducing the superheated steam into a steam kinetic energy mill; s3: adding the dry distillation waste residue generated after the dry distillation of the oil shale into steam kinetic energy mill, and crushing by utilizing superheated steam; s4: extracting ultrafine silicon carbon filler formed after steam kinetic energy grinding by utilizing a cyclone collector, and collecting and discharging the ultrafine silicon carbon filler; s5: the gas discharged from the cyclone collector is introduced into the heat exchanger, soft water is preheated, and the preheated soft water is introduced into the boiler. The method improves the utilization rate of the oil shale carbonization byproducts, effectively reduces the cost of ultrafine processing of solid wastes such as the oil shale carbonization waste residues and the like, and realizes the utilization of the oil shale carbonization waste gas waste residues.
Description
Technical Field
The invention belongs to a treatment method of oil shale, and particularly relates to a method for preparing ultrafine silicon carbon filler by utilizing waste gas and waste residues of oil shale.
Background
At present, after shale oil is extracted from each large shale oil field annually, the generated oil shale solid waste is increased in the megaton, but at present, the oil shale solid waste is mainly used for batching in cement factories, the selling price is about 20-40 yuan/ton, the value is very low, the resource waste is serious, and a large amount of oil shale solid waste is piled up, so that land resources are occupied, destroyed and wasted. It is highly demanded to change waste into valuable through high-value utilization and reduce the emission of solid wastes.
Experimental research shows that the oil shale waste residue has great potential in the aspects of preparing carbon black, agricultural black mulching film, soil restoration agent, building materials and the like, and the benefit is very remarkable. Meanwhile, the industries of cables, rubber and plastics consume a large amount of reinforcing fillers such as calcium carbonate, carbon black and the like in the production process, the price is increased year by year, and substitutes are urgently needed to be searched. How to prepare the oil shale waste residue into the ultrafine silicon carbon filler in a large scale with low cost, expands the use way of the oil shale waste residue, improves the added value, becomes an urgent research subject, and has great economic benefit, environmental benefit and social benefit.
The existing physical process for processing superfine powder mainly comprises mechanical crushing and jet milling. The mechanical crushing equipment includes ball mill, impact mill, vibration mill, roll mill, etc. The mechanical crushing part is in direct contact with crushed materials, and the harder materials cause great abrasion to equipment; the jet milling has the advantages of no abrasion, high grading precision and narrow product particle size distribution, is widely applied to processing superfine powder, but has higher energy consumption and low yield, so that the preparation cost is too high, and the competitiveness of powder products is reduced. The oil shale dry distillation waste residue has higher water content, and dry distillation and dehydration are needed before the jet mill is used for crushing, so that the water content is less than 6%, and the use of the jet mill is limited.
The main component of the oil shale retorting waste gas is gas, which is also called as oil shale retorting residual gas. Gas is a clean energy source which is generally present in coal mines and has great threat to coal mine safety, and if released into the air, the gas can cause climate warming, but if the gas can be effectively developed and utilized, the gas can become clean natural gas energy source. The existing utilization method of residual gas resources of oil shale carbonization mainly comprises the steps of power generation by a gas power station, heating by using gas steam for life and the like, and direct emptying. The investment of the gas power station is large, the technical requirement is high, and the energy utilization rate is low due to energy conversion; the domestic heating is suitable for the north winter, and the utilization range limited by the air temperature is limited.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the method for preparing the ultrafine silicon carbon filler by utilizing the oil shale waste gas and waste residues, which improves the utilization rate of oil shale carbonization byproducts, effectively reduces the cost of ultrafine processing of solid wastes such as the oil shale carbonization waste residues and the like, and realizes the high-value recycling utilization of the solid wastes such as the oil shale carbonization waste residues and the like.
In order to achieve the object of the invention, the following scheme is adopted:
a method for preparing ultrafine silicon carbon filler by utilizing oil shale waste gas and waste residues comprises the following steps:
s1: the boiler prepares superheated steam by burning dry distillation waste gas generated during dry distillation of the oil shale;
s2: introducing the superheated steam into a steam kinetic energy mill;
s3: adding the dry distillation waste residue into steam kinetic energy mill, and crushing by using superheated steam;
s4: extracting ultrafine silicon carbon filler formed after steam kinetic energy grinding by utilizing a cyclone collector, and collecting and discharging the ultrafine silicon carbon filler;
s5: the gas discharged from the cyclone collector is introduced into the heat exchanger, soft water is preheated, and the preheated soft water is introduced into the boiler.
Further, after step S4, there is a step S41: dust removal, the dust remover carries out dust removal treatment on the gas discharged by the cyclone collector.
Further, the flue gas generated during the operation of the boiler in the step S1 is introduced into the dust remover.
Further, both the cyclone collector and the high-temperature dust collector are provided with heat insulation layers.
Further, the ultrafine silicon carbon filler has a particle size d90=3 to 20 μm and a water content of <0.5%.
Further, step S3 is followed by step S31: classifying, namely classifying the ultrafine silicon carbon filler formed by grinding steam kinetic energy into powder through a turbine classifier.
The invention has the beneficial effects that:
1. the method improves the utilization efficiency of oil shale carbonization byproducts, effectively reduces the cost of ultrafine processing of solid wastes such as oil shale carbonization waste residues, realizes high-value resource utilization of the solid wastes such as the oil shale carbonization waste residues, promotes the utilization of a large amount of solid waste resources, and increases the economic benefit of coal mine enterprises.
2. Compared with a pulverizer using compressed air as power and medium, the pulverizer using superheated steam as power and medium has the advantages of high air flow speed, large pulverizing kinetic energy, narrow particle size distribution, finer particle size of the produced product and larger yield, can greatly reduce the production cost of preparing fine silicon-carbon filler, greatly improve the utilization rate and additional value of the silicon-carbon filler, and improve the environmental pollution caused by waste such as oil shale waste residue.
Drawings
The drawings described herein are for illustration of selected embodiments only and not all possible implementations, and are not intended to limit the scope of the invention.
Fig. 1 shows a process flow diagram of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, but the described embodiments of the present invention are some, but not all embodiments of the present invention.
As shown in fig. 1, a method for preparing an ultrafine silicon carbon filler by using waste gas and waste residues of oil shale comprises the following steps:
s1: the boiler is used for preparing superheated steam by using the dry distillation waste gas generated during the dry distillation of the oil shale, the main component of the dry distillation waste gas is gas, the steam prepared by burning the gas is used as a power source, the huge investment of gas power generation is saved, the repeated conversion from electric energy to mechanical energy is omitted, and the utilization rate of energy is greatly improved. The gas is used as clean energy, is effectively utilized, and is not influenced by seasons, climate and the like. Specifically, the pressure of the superheated steam is 1.0-1.6 Mpa, and the temperature is 300-350 ℃;
s2: introducing the superheated steam into a steam kinetic energy mill;
s3: the method has the advantages that the dry distillation waste residues generated after the oil shale is dry distilled are put into steam kinetic energy mill to be crushed by utilizing superheated steam, the superheated steam is used as power and medium for crushing, and compared with an air jet mill, the method has the advantages of high air flow speed, large crushing kinetic energy, narrow particle size distribution, finer particle size of the produced product and larger yield, can greatly reduce the production cost of preparing the superfine silicon-carbon filler, greatly improve the utilization rate and the added value of the silicon-carbon filler, and improve the pollution of the silicon-carbon filler waste to the environment; the steam kinetic energy mill can dry and dehydrate the waste residues by utilizing superheated steam while crushing the dry distilled waste residues, so that the drying degree of raw materials can be reduced, the energy consumption is saved, and the drying link of a finished product is reduced, so that the working procedures are reduced;
s4: extracting ultrafine silicon carbon filler formed after steam kinetic energy grinding by utilizing a cyclone collector, and collecting and discharging the ultrafine silicon carbon filler;
s5: introducing the gas discharged by the cyclone collector into a heat exchanger to preheat soft water, introducing the preheated soft water into a boiler, preheating the soft water of the boiler by using the gas discharged by the cyclone collector through the heat exchanger, increasing the temperature of the water fed into the boiler, reducing heating energy consumption, recycling the gas with waste heat discharged by the cyclone collector, and realizing the maximization of energy utilization of the system; in addition, the step utilizes the low temperature of soft water to condense the gas discharged from the cyclone collector so as to discharge the gas in a liquid state, so that dust in the gas discharged from the cyclone collector is finally deposited at the bottom of the liquid collecting tank, and the dust in the gas discharged from the cyclone collector is prevented from being directly discharged into the atmosphere, thereby preventing the atmospheric pollution.
More specifically, the granularity of the ultrafine silicon carbon filler is d90=3-20 μm, the water content is less than 0.5%, and the main components of the ultrafine silicon carbon filler are silicon dioxide, aluminum oxide, ferric oxide and carbon-containing organic matters, wherein the content of the organic matters is about 25%.
According to the scheme, the oil shale dry distillation waste gas is used as fuel, the coal mine solid waste oil shale dry distillation waste residue is used as raw material, the ultra-micro silicon carbon filler is processed and prepared, the oil shale waste material is utilized in all aspects, the influence of the dry distillation waste gas on the environment is eliminated, the superheated steam is produced, the crushing efficiency of the dry distillation waste residue is improved, the coal mine waste is reduced, the accumulation is reduced, and the environmental pollution is prevented.
Preferably, after step S4, there is also step S41: the dust removal and dust removal device performs dust removal treatment on the gas discharged by the cyclone collector, so that the gas entering the heat exchanger is cleaner, and more particularly, the dust remover guides the gas in the cyclone collector to pass through the dust remover by using the induced draft fan and then enter the heat exchanger.
Preferably, the flue gas generated during the operation of the boiler in the step S1 is introduced into the dust remover, the dust remover is heated and insulated, so that the condensation of steam in the dust remover during the operation of equipment is avoided, the filter screen of the dust remover is prevented from being blocked by dust and dust liquid mixture, and meanwhile, the flue gas of the boiler is utilized to reheat and heat the gas exhausted by the air collector, so that the preheating stability of soft water is improved, the utilization rate of dry distillation waste gas is further improved, and the maximization of the energy utilization of the system is realized.
Preferably, both the cyclone collector and the high-temperature dust collector are provided with heat insulation layers so as to maintain the temperature of the internal gas and reduce heat dissipation.
Preferably, step S3 is further followed by step S31: classifying, namely classifying the ultrafine silicon carbon filler formed by grinding the steam kinetic energy into powder by a turbine classifier so that the ultrafine silicon carbon filler with qualified particle size enters a cyclone collector, and the ultrafine silicon carbon filler with overlarge particle size is continuously left in the steam kinetic energy mill for grinding.
The foregoing description of the preferred embodiments of the invention is merely exemplary and is not intended to be exhaustive or limiting of the invention. It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.
Claims (6)
1. The method for preparing the ultrafine silicon carbon filler by utilizing the waste gas and waste residues of the oil shale is characterized by comprising the following steps:
s1: the boiler prepares superheated steam by burning dry distillation waste gas generated during dry distillation of the oil shale;
s2: introducing the superheated steam into a steam kinetic energy mill;
s3: adding the dry distillation waste residue generated after the dry distillation of the oil shale into steam kinetic energy mill, and crushing by utilizing superheated steam;
s4: extracting ultrafine silicon carbon filler formed after steam kinetic energy grinding by utilizing a cyclone collector, and collecting and discharging the ultrafine silicon carbon filler;
s5: the gas discharged from the cyclone collector is introduced into the heat exchanger, soft water is preheated, and the preheated soft water is introduced into the boiler.
2. The method for preparing ultrafine silicon carbon filler using waste gas and waste residue of oil shale according to claim 1, wherein after step S4, there is further step S41: dust removal, the dust remover carries out dust removal treatment on the gas discharged by the cyclone collector.
3. The method for preparing ultrafine silicon carbon filler by utilizing waste gas and waste residue of oil shale according to claim 2, wherein flue gas generated during the operation of the boiler in the step S1 is introduced into a dust remover.
4. The method for preparing ultrafine silicon carbon filler by utilizing waste gas and waste residues of oil shale according to claim 3, wherein the cyclone collector and the high-temperature dust remover are provided with heat insulation layers.
5. The method for preparing the ultrafine silicon carbon filler by utilizing the waste gas and the waste residue of the oil shale according to claim 1, wherein the ultrafine silicon carbon filler has the particle size of d90=3-20 μm and the water content of <0.5%.
6. The method for preparing ultrafine silicon carbon filler by utilizing waste gas and waste residues of oil shale according to claim 1, wherein the step S3 is further followed by the step S31: classifying, namely classifying the ultrafine silicon carbon filler formed by grinding steam kinetic energy into powder through a turbine classifier.
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2023
- 2023-03-27 CN CN202310304147.9A patent/CN116274277A/en active Pending
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CN101117584A (en) * | 2007-05-09 | 2008-02-06 | 东北电力大学 | Integral process for oil shale retorting oil refining and coal-char combustion power generation |
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CN104232129A (en) * | 2014-09-11 | 2014-12-24 | 陈伟 | Method for preparing semicoke and tar by virtue of co-pyrolysis of organic waste and coal |
CN105238472A (en) * | 2015-09-12 | 2016-01-13 | 西南科技大学 | Method for producing clean coal by utilizing industrial waste heat |
CN105176552A (en) * | 2015-09-30 | 2015-12-23 | 东北电力大学 | Novel gas heat carrier retorting and gas power generation integrated device and technology |
CN106221837A (en) * | 2016-09-29 | 2016-12-14 | 西南科技大学 | A kind of method utilizing superheated steam to prepare water-coal-slurry |
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