CN116622429A - Preparation method of smokeless environment-friendly regenerated briquette - Google Patents
Preparation method of smokeless environment-friendly regenerated briquette Download PDFInfo
- Publication number
- CN116622429A CN116622429A CN202310707885.8A CN202310707885A CN116622429A CN 116622429 A CN116622429 A CN 116622429A CN 202310707885 A CN202310707885 A CN 202310707885A CN 116622429 A CN116622429 A CN 116622429A
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- briquette
- coal
- preparation
- environment
- friendly regenerated
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- 239000004484 Briquette Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000003245 coal Substances 0.000 claims abstract description 38
- 239000000843 powder Substances 0.000 claims abstract description 16
- 239000010920 waste tyre Substances 0.000 claims abstract description 16
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 13
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 13
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 13
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 13
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 13
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 13
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000010902 straw Substances 0.000 claims abstract description 13
- 239000010881 fly ash Substances 0.000 claims abstract description 11
- 239000006227 byproduct Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000005406 washing Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 13
- 238000000197 pyrolysis Methods 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 230000004913 activation Effects 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 239000002956 ash Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 4
- 239000012190 activator Substances 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- 238000004134 energy conservation Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000004939 coking Methods 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 claims description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052815 sulfur oxide Inorganic materials 0.000 claims description 2
- 239000002893 slag Substances 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 12
- 239000000779 smoke Substances 0.000 abstract description 3
- 150000003568 thioethers Chemical class 0.000 abstract 1
- 239000002910 solid waste Substances 0.000 description 12
- 239000007789 gas Substances 0.000 description 8
- 238000001994 activation Methods 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000005336 cracking Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 231100000481 chemical toxicant Toxicity 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/48—Solid fuels essentially based on materials of non-mineral origin on industrial residues and waste materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a preparation method of smokeless environment-friendly regenerated briquette. The method is characterized by comprising the following steps of: the environment-friendly regenerated briquette consists of 5-10% of waste tire powder, 5-10% of kaolin, 5-10% of straw, 5-10% of power plant fly ash, 1-5% of slaked lime and the balance of coal slime which is a byproduct of a coal washing plant. The coal is regenerated by utilizing waste materials, is used for burning coal, is easy to ignite, does not discharge sulfides, has less smoke, saves energy and protects environment.
Description
Technical Field
The invention relates to a preparation method of smokeless environment-friendly regenerated briquette.
Background
With the rapid development of the industry in China, the discharge amount of solid waste, waste residues and the like is increased year by year, so that a large amount of waste and waste residues are piled up for a long time, resources are wasted, a large amount of land is occupied, and water sources, soil and surrounding air are polluted. If the waste water cannot be effectively treated and utilized, serious energy waste and environmental pollution are caused, and particularly toxic chemical substances in the waste water can cause harm to human bodies and other organisms. Therefore, finding a way to solve the environmental pollution problem of solid waste and convert huge industrial waste into available renewable resources for economic sustainable development has become a general concern and urgent need to be solved.
In order to better protect the environment and improve the comprehensive recycling of industrial wastes, the technology research and development is carried out, the solid wastes, even the waste straws, are utilized in a high-grade way, the process technology for producing the environment-friendly briquette by replacing part of raw coal is developed step by step, and a new technical route is opened up for coal development and comprehensive utilization of the solid wastes. The application number 202010922927.6 discloses a method for preparing industrial briquette by using combustible solid waste, which takes gangue and slime as raw materials and adds 50-70% crushed coal to prepare industrial briquette; the 202110503736.0 patent prepares the industrial environment-friendly briquette by gangue, slime, 30-50% raw coal and additives; 201910104413.7 the environment-friendly briquette is prepared by using biomass waste and a product obtained after low-temperature pyrolysis of raw coal.
In the existing briquette preparation process, the usage amount of solid wastes (coal gangue, coal slime, straw, electric lime and the like) is still small, and the briquette is high in cost and greatly influenced by regional conditions. Some briquette has low conversion rate and discharges harmful gas during combustion. In order to further reduce the production cost of the briquette and improve the utilization rate of solid wastes, a new preparation method of the environment-friendly briquette needs to be researched and developed.
Disclosure of Invention
The invention provides a preparation method of smokeless environment-friendly regenerated briquette. Solid waste is used as main raw material, and sulfur-fixing agent and adhesive are mixed according to a certain proportion to prepare the smokeless environment-friendly briquette. The method is beneficial to solving the problem of environmental pollution caused by solid waste, realizing the recycling of resources and reducing the waste of resources; meanwhile, the waste is changed into valuable, the harm is changed into benefit, and the prepared molded coal has high combustion rate and good sulfur fixing effect. The production process is not limited by areas, and has great promotion effect on the development of circular economy and the promotion of sustainable development of economy and society.
The key points of the invention are as follows:
the invention provides a preparation method of smokeless environment-friendly regenerated molded coal, which consists of 5-10% of waste tire powder, 5-10% of kaolin, 5-10% of straw, 5-10% of fly ash of a power plant, 1-5% of slaked lime and the balance of byproduct coal slime of a coal washing plant.
The preparation method of the briquette is characterized by comprising the following steps:
putting various solid raw materials into a fine crusher for crushing and screening;
delivering the waste tire powder with the particle size less than or equal to 10mm to a feeding groove, entering a cracking furnace, and passing through N 2 Flushing and cleaning O 2 And then, insulating air for heating, enabling the product pyrolysis oil to enter an oil-gas separation tank from an oil-gas outlet, condensing by circulating water, and storing the product pyrolysis oil in a pyrolysis oil storage tank at the lower part of a condenser.
Mixing the fly ash, the straw and the coal slime of the power plant according to a certain proportion, and sending the mixture into a high-pressure mill for mixing and grinding to 300-400 meshes;
adding kaolin, slaked lime and low-temperature pyrolysis product fuel oil into the materials according to the proportion, and uniformly mixing;
the mixed materials are sent into an activator for activation for 4 hours and then cooled, and are put into a stirrer for uniform stirring until forming;
the prepared materials are sent into a molding press for molding treatment, and waste materials generated in the extrusion molding process are recycled to a stirrer for reuse;
and (5) demolding, standing, and drying to proper moisture to obtain the smoke-free environment-friendly regenerated briquette.
In the preparation method of the briquette, the slaked lime is used as a sulfur-fixing agent to remove sulfur oxides (including SO 2 And SO 3 ) The binder is kaolin, so that the coal is not broken after being molded, and the coal is kept unchanged for a long time.
In the preparation method of the molded coal, the low-temperature pyrolysis of the waste tire rubber powder is a reaction process of utilizing high temperature (450-500 ℃) to break chemical bonds of organic polymers in the waste rubber under the anaerobic condition and releasing various volatile matters, and the products are condensable liquid (pyrolysis oil and the like) and pyrolysis gas (H) 2 、CH 4 CO, etc.) and carbides. The pyrolysis gas is conveyed to the storage tank, and is supplied to the pyrolysis furnace for heating through the booster pump in a pressurized mode, so that multi-stage utilization is achieved, and energy conservation and environmental protection are achieved.
In the preparation method of the molded coal, physical activation is adopted for material mixing activation, the heat source used is 780 ℃ steam, and the pressure is 0.1-10Mpa.
After the component materials are subjected to high-pressure mixed grinding and physical activation, the specific surface area is increased in geometric multiplying power, and the pores are rich. On the one hand, the activation process is a process that steam is used as an activator to perform oxidation-reduction reaction with carbon to remove tar substances and non-carbonized substances, so that the original closed pores of the material are opened, and the original pores are enlarged to form new pores. On the other hand, through activation, the mixture molecules cross-permeate, the molecules are tightly combined, and the coactive activity is enhanced. Coal molecular oxidation and CO 2 The reduction reaction is continuously carried out, and the fixed carbon in the coal is converted into CO and H 2 The secondary combustion is carried out on the gas, the conversion rate is improved, the full utilization of volatile and fixed carbon is realized, and the purpose of energy conservation is achieved.
The smokeless environment-friendly regenerated briquette fixed carbonHigh content and low volatile yield. The high-position heating value is 6800 kcal/kg, the low-position heating value is more than 6200 kcal/kg, the carbon content is 87-89%, the volatile component is 6-8%, the ash content is 3-4%, the moisture content is 1-2%, and the compressive strength is 10-12 kg/cm 2 The combustion is easy, the coking is avoided, the carbon content of ash is less than 2%, the combustion is complete, the smoke is less, the heat efficiency is high, sulfide is not discharged after the combustion, the generated toxic gas is relatively reduced, the environment-friendly capability is greatly improved compared with the existing molded coal, the heat value of high-quality coal can be achieved, and the economic value is high.
The preparation method of the smokeless environment-friendly regenerated briquette utilizes solid waste as aggregate, and adopts recycling processing, and adds fillers such as sulfur-fixing agent, binder and the like, so that the solid waste is turned into wealth, and the smokeless environment-friendly regenerated briquette with good combustion activity and less pollutant emission can be prepared, can replace fire coal, and creates a new fuel path, thereby completely conforming to the basic policy of national resource utilization and realizing the concrete implementation of the national policy of resource recovery and reuse. Meanwhile, the production and manufacturing technology adopted by the invention is advanced, the process technology is mature, the material sources are inexhaustible, the materials can be obtained locally and are not influenced by regional conditions, and a powerful technical support is provided for the effective utilization of wastes and the large-scale production of the smokeless environment-friendly briquette preparation.
Detailed Description：
Examples
The invention provides a smokeless environment-friendly regenerated briquette which is prepared from 7% of waste tire powder and 8% of waste tire powder by mass percent
The coal-cleaning plant comprises straw, 7% of fly ash of a power plant, 7% of kaolin, 3% of slaked lime and the balance of coal slime which is a byproduct of a coal-cleaning plant.
Example 2:
the smokeless environment-friendly regenerated briquette consists of 10% of waste tire powder, 10% of straw, 10% of power plant fly ash, 8% of kaolin, 5% of slaked lime and the balance of coal slime which is a byproduct of a coal washing plant.
Example 3:
the invention provides a smokeless environment-friendly regenerated briquette which is prepared from 5% of waste tire powder by mass and 5% of waste tire powder by mass
The coal-cleaning plant comprises straw, 5% of fly ash of a power plant, 8% of kaolin, 5% of slaked lime and the balance of coal slime which is a byproduct of a coal-cleaning plant.
Example 4:
the smokeless environment-friendly regenerated briquette consists of 10% of waste tire powder, 8% of straw, 5% of power plant fly ash, 7% of kaolin, 3% of slaked lime and the balance of coal slime which is a byproduct of a coal washing plant.
Example 5:
the invention provides a smokeless environment-friendly regenerated briquette which is prepared from 5% of waste tire powder and 8% of waste tire powder by mass percent
The coal-cleaning plant comprises straw, 10% of fly ash of a power plant, 7% of kaolin, 3% of slaked lime and the balance of coal slime which is a byproduct of a coal-cleaning plant.
Example 6:
the smokeless environment-friendly regenerated briquette consists of 7% of waste tire powder, 10% of straw, 7% of power plant fly ash, 7% of kaolin, 5% of slaked lime and the balance of coal washery byproduct coal slime.
The preparation method of the smokeless environment-friendly regenerated briquette accords with the invention: and (3) putting various solid raw materials into an inlet groove of a fine crusher to carry out crushing processing. Waste tire powder with the particle size less than or equal to 10mm is sent to a feeding groove, enters a cracking furnace for low-temperature cracking, and product cracking oil enters an oil-gas separation tank from an oil-gas outlet, is condensed by circulating water and is stored in the storage tank.
The fly ash, the straw and the coal slime of the power plant are sent into a high-pressure mill according to the mass fraction and mixed and ground to 300-400 meshes; adding the kaolin, the slaked lime and the product fuel oil with the mass fraction into the materials and uniformly mixing; after the activation for 4 hours and cooling, putting the mixture into a stirrer for stirring uniformly until the mixture is molded; feeding into a molding press, and extrusion molding; finally, demolding, standing and drying to obtain the smokeless environment-friendly regenerated briquette.
The smokeless environment-friendly regenerated briquette provided by the invention is inflammable, high in heat value, and capable of enabling ash volatile matters and smoke to reach standards. Advanced production process, reasonable component structure, high utilization rate of solid waste, low cost, high production efficiency and wide practical value.
Claims (5)
1. A preparation method of smokeless environment-friendly regenerated briquette is characterized by comprising the following steps: the briquette consists of 5-10% of waste tire powder, 5-10% of kaolin, 5-10% of straw, 5-10% of power plant fly ash, 1-5% of slaked lime and the balance of coal slime which is a byproduct of a coal washing plant.
2. The method for preparing the smokeless environment-friendly regenerated briquette according to claim 1, which is characterized in that: slaked lime as sulfur-fixing agent for removing sulfur oxides (including SO 2 And SO 3 ) The kaolin is used as a binder to ensure that the coal is not broken after being molded.
3. The preparation method according to claim 1 or 2, wherein the mixed material is sent into an activator for activation, the heat source is 780 ℃ steam, the pressure is 0.1-10Mpa, the mixed material is cooled after being activated for 4 hours, and the mixed material is put into a stirrer for uniform stirring until the mixed material is formed.
4. According to the preparation method of claim 1, after the waste tire rubber powder is subjected to low-temperature pyrolysis, the byproduct pyrolysis gas is used as combustible gas to be supplied to a pyrolysis furnace for heating, so that multistage recycling is realized, and the energy conservation and the environmental protection are realized.
5. The smoke-free environment-friendly regenerated briquette according to claim 1, wherein the high calorific value is 6800 kcal/kg, the low calorific value is 6200 kcal/kg or more, the carbon content is 87-89%, the volatile matter is 6-8%, the ash content is 3-4%, the moisture content is 1-2%, and the compressive strength is 10-12 kg/cm 2 Easy to burn, not coking, ash slag carbon content less than 2%。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310707885.8A CN116622429A (en) | 2023-06-15 | 2023-06-15 | Preparation method of smokeless environment-friendly regenerated briquette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310707885.8A CN116622429A (en) | 2023-06-15 | 2023-06-15 | Preparation method of smokeless environment-friendly regenerated briquette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116622429A true CN116622429A (en) | 2023-08-22 |
Family
ID=87590632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310707885.8A Pending CN116622429A (en) | 2023-06-15 | 2023-06-15 | Preparation method of smokeless environment-friendly regenerated briquette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116622429A (en) |
-
2023
- 2023-06-15 CN CN202310707885.8A patent/CN116622429A/en active Pending
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