CN114214082A - Method for efficiently recycling fallen leaves - Google Patents
Method for efficiently recycling fallen leaves Download PDFInfo
- Publication number
- CN114214082A CN114214082A CN202111436319.5A CN202111436319A CN114214082A CN 114214082 A CN114214082 A CN 114214082A CN 202111436319 A CN202111436319 A CN 202111436319A CN 114214082 A CN114214082 A CN 114214082A
- Authority
- CN
- China
- Prior art keywords
- fallen leaves
- coking
- crushing
- efficiently recycling
- leaves
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004064 recycling Methods 0.000 title claims abstract description 13
- 238000004939 coking Methods 0.000 claims abstract description 55
- 239000003245 coal Substances 0.000 claims abstract description 24
- 239000000571 coke Substances 0.000 claims description 25
- 239000000126 substance Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 10
- 238000012216 screening Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 2
- 239000005416 organic matter Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 239000003337 fertilizer Substances 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
-
- 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
- Y02E50/10—Biofuels, e.g. bio-diesel
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The invention belongs to the technical field of coking, and particularly relates to a method for efficiently recycling fallen leaves. Meanwhile, the fallen leaves can replace part of coking coal after being used for coking, so that the effect of reducing the usage amount of the coking coal is achieved, and the coking cost is reduced.
Description
Technical Field
The invention belongs to the technical field of coking, and particularly relates to a method for efficiently recycling fallen leaves.
Background
Fallen leaves are a biomass material and contain abundant organic components and inorganic mineral components, and after being collected, the fallen leaves are treated by direct incineration, incineration for power generation, decomposition for fertilizer making and the like. The direct burning of fallen leaves not only wastes resources, but also pollutes the environment. The fallen leaves are incinerated to generate electricity, and organic matters in the leaves cannot be recovered. The process for preparing the fertilizer by rotting the fallen leaves is complex, long in time and wide in occupied area, and the heat of the fallen leaves cannot be effectively utilized.
Therefore, there is a need to develop a method for efficiently recycling fallen leaves, which can simultaneously realize the heat utilization of fallen leaves and the recovery of organic matters.
Disclosure of Invention
The invention aims to provide a method for efficiently recycling fallen leaves, which can simultaneously realize the utilization of fallen leaf heat and the recovery of organic matters.
The technical problem to be solved by the invention is realized by adopting the following technical scheme: a method for efficiently recycling fallen leaves comprises the following steps:
screening in step 1: screening the collected fallen leaves to separate the leaves from other substances, wherein the other substances are impurities except the fallen leaves and mainly are non-combustible substances such as stones, soil and the like, and the specific screening method is not the protection content of the invention and is not repeated herein;
step 2, crushing: crushing the sieved fallen leaves;
step 3, proportioning: mixing the crushed fallen leaves with other coking coals according to a proportion, wherein the proportion of the fallen leaves is less than or equal to 1 percent of the total weight; because the fallen leaf bulk density is less than the coking coal bulk density, in order to avoid the risks of coal loading density reduction and coke strength reduction caused by the falling leaf bulk density, the proportion of the fallen leaves is less than or equal to 1 percent of the total weight according to daily production experience;
and step 4, crushing: crushing a mixture of fallen leaves and coking coal;
step 5, coking: charging the crushed fallen leaves and coking coal mixture into a coke oven for coking;
step 6, organic matter recovery: and (4) recovering chemical products step by step from the coke oven raw gas.
In the coking process, the fallen leaves are converted into coke meeting the production requirement of the blast furnace along with coking coal, high-heat-value coke oven gas and byproducts such as tar, crude benzene and the like which can be used as chemical raw materials are generated, and the fallen leaves organic matters and heat are fully recycled.
Preferably, the screening in the step 1 adopts a mesh screen, the aperture of the mesh screen is 20 mm-50 mm, and small stones and soil mixed in fallen leaves are mainly screened out.
Preferably, in the step 2, the fallen leaves are coarsely crushed to facilitate subsequent blending, and the size of the crushed fallen leaves is less than 20 mm.
Preferably, the crushing in the step 4 is carried out according to the original crushing process of a coking plant.
Preferably, in the step 5, the fallen leaves are pyrolyzed in the coke oven, so that the utilization of the heat of the fallen leaves and the separation of volatile matters are realized. The fallen leaves are rich in carbon and can be oxidized to generate heat, the utilization of the fallen leaves heat is reflected in that the fallen leaves are converted into coke, the coke is a conventional fuel, and the coke is heated to about 1000 ℃ under the condition of air isolation, so that the fallen leaves are subjected to high-temperature dry distillation, and the heat utilization rate is improved.
Preferably, in the step 6, the volatile matters in the fallen leaves enter the raw gas and are recycled with the raw gas step by step chemical products, so that the organic substances in the fallen leaves are recycled. The coking chemical products comprise coke, crude tar, crude benzene, ammonia and other products, wherein the ammonia can be processed into ammonium sulfate, anhydrous ammonia, concentrated ammonia water or ammonium chloride, and can be used as fertilizer for agricultural production, leaves are rich in nitrogen, and the nitrogen in the fallen leaves after coking is converted into the ammonia.
The invention has the beneficial effects that: according to the invention, the fallen leaves are screened and crushed, and then enter a coking process by using a coking raw material, and the existing coking technical equipment is utilized, so that the fallen leaf heat and organic matters can be simultaneously recovered. Meanwhile, the fallen leaves can replace part of coking coal after being used for coking, so that the effect of reducing the usage amount of the coking coal is achieved, and the coking cost is reduced.
Drawings
FIG. 1 is a flow chart of the method for efficiently utilizing fallen leaves as resources.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1
Screening the collected fallen leaves by using a vibrating screen, wherein the screen aperture of the vibrating screen is 20 mm; crushing the screened fallen leaves by using a jaw crusher, wherein the size of the crushed fallen leaves is less than 20 mm; mixing the crushed fallen leaves with other coking coals, wherein the ratio of the fallen leaves is 1 percent of the total weight; crushing the mixture of the fallen leaves and the coking coal by using an original crusher of a coking plant; and charging the crushed fallen leaves and the coking coal mixture into a coke oven for coking.
In the coking process, the fallen leaves are converted into coke meeting the production requirement of the blast furnace along with coking coal, and coke oven gas with high heat value and byproducts such as tar, crude benzene and the like which can be used as chemical raw materials are generated, so that the fallen leaves organic matters and heat are fully recycled, and the consumption of the coking coal can be reduced by 1 kg-2 kg per ton of coke. The heat value of the fallen leaves can float along with the difference of the types and the qualities of the fallen leaves, so the consumption of the fallen leaves which can replace coking coal also can float.
Example 2
Screening the collected fallen leaves by using a vibrating screen, wherein the screen aperture of the vibrating screen is 40 mm; crushing the screened fallen leaves by using a jaw crusher, wherein the size of the crushed fallen leaves is less than 20 mm; mixing the crushed fallen leaves with other coking coals, wherein the ratio of the fallen leaves is 0.5 percent of the total weight; crushing the mixture of the fallen leaves and the coking coal by using an original crusher of a coking plant; and charging the crushed fallen leaves and the coking coal mixture into a coke oven for coking.
In the coking process, the fallen leaves are converted into coke meeting the production requirement of the blast furnace along with coking coal, coke oven gas with high heat value and byproducts such as tar, crude benzene and the like which can be used as chemical raw materials are generated, the fallen leaves organic matters and heat are fully recycled, and the consumption of the coking coal can be reduced by 0.5 kg-1 kg per ton of coke.
Example 3
Screening the collected fallen leaves by using a vibrating screen, wherein the screen aperture of the vibrating screen is 50 mm; crushing the screened fallen leaves by using a jaw crusher, wherein the size of the crushed fallen leaves is less than 20 mm; mixing the crushed fallen leaves with other coking coals, wherein the ratio of the fallen leaves is 0.2 percent of the total weight; crushing the mixture of the fallen leaves and the coking coal by using an original crusher of a coking plant; and charging the crushed fallen leaves and the coking coal mixture into a coke oven for coking.
In the coking process, the fallen leaves are converted into coke meeting the production requirement of the blast furnace along with coking coal, coke oven gas with high heat value and byproducts such as tar, crude benzene and the like which can be used as chemical raw materials are generated, the fallen leaves organic matters and heat are fully recycled, and the consumption of the coking coal can be reduced by 0.2 kg-0.5 kg per ton of coke.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. A method for efficiently recycling fallen leaves is characterized by comprising the following steps: the method comprises the following steps:
screening in step 1: screening the collected fallen leaves to separate the leaves from other substances;
step 2, crushing: crushing the sieved fallen leaves;
step 3, proportioning: mixing the crushed fallen leaves with other coking coals according to a proportion, wherein the proportion of the fallen leaves is less than or equal to 1 percent of the total weight;
and step 4, crushing: crushing a mixture of fallen leaves and coking coal;
step 5, coking: charging the crushed fallen leaves and coking coal mixture into a coke oven for coking;
step 6, organic matter recovery: and (4) recovering chemical products step by step from the coke oven raw gas.
2. The method for efficiently recycling fallen leaves according to claim 1, wherein: the screening in the step 1 adopts a mesh screen, and the aperture of the mesh screen is 20 mm-50 mm.
3. The method for efficiently recycling fallen leaves according to claim 1, wherein: and 2, the step 2 of crushing is to coarsely crush the fallen leaves so as to facilitate subsequent material preparation, and the size of the crushed fallen leaves is less than 20 mm.
4. The method for efficiently recycling fallen leaves according to claim 1, wherein: and (4) crushing according to the original crushing process of the coking plant.
5. The method for efficiently recycling fallen leaves according to claim 1, wherein: in the step 5, the fallen leaves are pyrolyzed in the coke oven, so that the utilization of the heat of the fallen leaves and the separation of volatile components are realized.
6. The method for efficiently recycling fallen leaves according to claim 1, wherein: and (6) allowing the volatile components of the fallen leaves in the step (6) to enter the raw gas, and recovering chemical products step by step along with the raw gas to realize the recovery of organic substances in the fallen leaves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111436319.5A CN114214082A (en) | 2021-11-29 | 2021-11-29 | Method for efficiently recycling fallen leaves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111436319.5A CN114214082A (en) | 2021-11-29 | 2021-11-29 | Method for efficiently recycling fallen leaves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114214082A true CN114214082A (en) | 2022-03-22 |
Family
ID=80698805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111436319.5A Pending CN114214082A (en) | 2021-11-29 | 2021-11-29 | Method for efficiently recycling fallen leaves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114214082A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB373241A (en) * | 1931-01-19 | 1932-05-19 | Gustav Hilger | Process of and apparatus for recovering and improving the distillation gases produced in the manufacture of coke |
| CN1465655A (en) * | 2002-07-04 | 2004-01-07 | 首钢总公司 | High temp. dry distillation treatment method for urban domestic refuse |
| CN101643656A (en) * | 2009-08-20 | 2010-02-10 | 韩大海 | Coke making method by adding biomass energy to mixed coal |
| CN105238421A (en) * | 2015-10-21 | 2016-01-13 | 云南煤业能源股份有限公司 | Tamping coking method with biomass mixed |
| CN105316013A (en) * | 2014-07-31 | 2016-02-10 | 宝山钢铁股份有限公司 | Method for producing coke by replacing part of coal by sawdust |
| CN106929045A (en) * | 2015-12-30 | 2017-07-07 | 北京三聚环保新材料股份有限公司 | A kind of coking process of biomass |
| CN108795463A (en) * | 2017-04-28 | 2018-11-13 | 宝山钢铁股份有限公司 | The method that coking production is carried out as part coking raw material using Wooden Biomass |
| KR20210035525A (en) * | 2019-09-24 | 2021-04-01 | 현대제철 주식회사 | Reduction method of the reducing agents ratio and co2 gas of the blast furnace |
-
2021
- 2021-11-29 CN CN202111436319.5A patent/CN114214082A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB373241A (en) * | 1931-01-19 | 1932-05-19 | Gustav Hilger | Process of and apparatus for recovering and improving the distillation gases produced in the manufacture of coke |
| CN1465655A (en) * | 2002-07-04 | 2004-01-07 | 首钢总公司 | High temp. dry distillation treatment method for urban domestic refuse |
| CN101643656A (en) * | 2009-08-20 | 2010-02-10 | 韩大海 | Coke making method by adding biomass energy to mixed coal |
| CN105316013A (en) * | 2014-07-31 | 2016-02-10 | 宝山钢铁股份有限公司 | Method for producing coke by replacing part of coal by sawdust |
| CN105238421A (en) * | 2015-10-21 | 2016-01-13 | 云南煤业能源股份有限公司 | Tamping coking method with biomass mixed |
| CN106929045A (en) * | 2015-12-30 | 2017-07-07 | 北京三聚环保新材料股份有限公司 | A kind of coking process of biomass |
| CN108795463A (en) * | 2017-04-28 | 2018-11-13 | 宝山钢铁股份有限公司 | The method that coking production is carried out as part coking raw material using Wooden Biomass |
| KR20210035525A (en) * | 2019-09-24 | 2021-04-01 | 현대제철 주식회사 | Reduction method of the reducing agents ratio and co2 gas of the blast furnace |
Non-Patent Citations (2)
| Title |
|---|
| 干勇 主编: "《烧结球团节能减排先进技术》", 31 October 2020, 冶金工业出版社, pages: 97 * |
| 张建良等: "《非高炉炼铁》", 31 March 2015, 冶金工业出版社, pages: 312 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110218826B (en) | Method for blast furnace injection of biomass hydrothermal carbon | |
| Finney et al. | The reuse of spent mushroom compost and coal tailings for energy recovery: comparison of thermal treatment technologies | |
| CN102352273B (en) | Biomass carbon for iron ore sintering, preparation thereof and application thereof | |
| CN106185938B (en) | A kind of system and method for Waste ammunition processing | |
| CN100535090C (en) | Method for one-step producing biomassfuel, biological haydite and active carbon using high wet mixed city garbage as raw material | |
| CN108424037B (en) | Raw material for producing carbon and graphite products by using aluminum electrolysis waste cathode and preparation method thereof | |
| CN102500607A (en) | Method for performing pyrolysis uniting building-material utilization to rubbish oversize products | |
| CN102504843B (en) | Heat accumulation type fuel gas radiation pipe rotary hearth furnace domestic garbage dry distillation method | |
| CN113817521A (en) | Preparation method of biomass charcoal composite fuel for blast furnace injection | |
| CN100534650C (en) | Method for one step preparing biomass fuel raw material, biological haydite raw material and active carbon raw material using high wet mixed city garbage as raw material | |
| CN104357119A (en) | Biomass carbon particle and preparation method thereof | |
| CN113025388B (en) | Method for co-resource utilization of urban solid waste and carbon dioxide | |
| CN114214082A (en) | Method for efficiently recycling fallen leaves | |
| CN112280577A (en) | Preparation and processing method of blast furnace injection biomass coke | |
| CN105733623B (en) | A kind of coking process of the low-order coal moulded coal raw material containing biomass | |
| CN115958041A (en) | Multi-source solid waste cooperative treatment and utilization method and system | |
| CN108130153A (en) | A kind of environmental friendly regenerated fuel of house refuse and its manufacturing method | |
| CN114752720B (en) | Hydrogen-rich thermal reduction blowing gas, preparation method thereof and application thereof in blast furnace iron making | |
| CN105733624B (en) | A kind of coking process of the moulded coal including biomass and low-order coal | |
| CN216521682U (en) | Gardens are useless admittedly and are useless device of coprocessing admittedly with building | |
| CN113088311B (en) | Reuse method of waste cathode carbon blocks in electrolytic aluminum industry and coking agent | |
| CN110723935B (en) | Method for treating sludge in plastic particle production line | |
| CN102827663A (en) | Preparation method for jointly processed mineralized refuse derived fuel suitable for cement kiln | |
| CN113736501B (en) | Coke production method based on coking area dust removal ash and coal co-coking | |
| CN105733633B (en) | A kind of moulded coal including biomass and low-order coal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |