CN110358597A - A kind of the clean solid fuel preparation process and its system modified based on semi-coke - Google Patents
A kind of the clean solid fuel preparation process and its system modified based on semi-coke Download PDFInfo
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- CN110358597A CN110358597A CN201910563783.7A CN201910563783A CN110358597A CN 110358597 A CN110358597 A CN 110358597A CN 201910563783 A CN201910563783 A CN 201910563783A CN 110358597 A CN110358597 A CN 110358597A
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- coke
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Classifications
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- 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
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
-
- 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
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
- C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
-
- 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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/30—Pressing, compressing or compacting
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention discloses a kind of the clean solid fuel preparation processes and its system modified based on semi-coke, wherein the technique includes the following steps: using the semi-coke block of semicoke as raw material: semi-coke block being put into preheating furnace indirect heating to 450 DEG C or so first, semi-coke block after heating immediately enters high temperature anaerobic heating process and is heated to 1000 DEG C or so, it completes the volatilization of vaporization at high temperature point and expects the high temperature miniature of block, super-low sulfur clean solid fuel finally can be generated after steam desulfurization is handled.With semi-coke (semicoke) for primary raw material, blocky semi-coke is directly handled the present invention, and powdery semi-coke adds binder, and cold moudling post-processing has been saved valuable high-quality coking coal, reduced costs；Semi-coke block, cold pressing block are carbonized by the way of the heating of direct high temperature anaerobic, and the time for generating clean solid fuel greatly shortens, and process energy consumption is low；Semi-coke (semicoke) modifying process does not generate contaminated wastewater；Byproduct combination sintering production directly obtains utilization.
Description
Technical field
The present invention relates to a kind of the clean solid fuel preparation processes and its system modified based on semi-coke.
Background technique
Currently, semi-coke is also known as semicoke, it is made of using quality fine coal block low temperature distillation, fixed carbon is high, specific resistance is high, changes
The characteristic that activity is high, low containing ash, aluminium is low, sulphur is low, phosphorus is low is learned, is now widely used in calcium carbide, iron to replace partial metallurgical burnt
The production of the products such as alloy, ferrosilicon, silicon carbide becomes a kind of good carbon material.Semi-coke the key technical indexes: fixed carbon >
82%, fugitive constituent < 4%, ash < 6%, sulphur < 0.3%, moisture content < 10%；Specific resistance > 3500 μ Ω M, granularity: 15-25mm.Semi-coke and coke
Charcoal difference: coke product production, pyrolysis temperature usually requires to reach 1000 DEG C or so, and semi-coke produces, and pyrolysis temperature generally exists
600 DEG C or so；General coke product raw material is mainly to have compared with based on the coking coals such as coking coal, the rich coal of strong cohesive property, semi-coke
Generally with the production of single coal, coal blending is not needed in process of production；Compared to the coke product of general significance, semi-coke, which has, is fixed
The advantages of " three high four is low " such as charcoal are high, specific resistance rate is high, chemical activity is high, ash content is low, sulphur is low, phosphorus is low, moisture is low, but it is blue simultaneously
The intensity of charcoal is compared poor with crush resistance；The coke product of general significance is chiefly used in the metallurgy industries such as blast furnace ironmaking and casting, and
Since intensity and crush resistance are relatively poor, semi-coke cannot be used for blast fumance, and the experiment of part steel mill can make in sintering production
Coke is replaced with 15% or so semi-coke.
Sintering production is one of the important process unit of modern steel production, and sintering process requires solid fuel as follows:
(1) effective component is high: fixed carbon is heater, and the higher the better, coke powder C >=80% that actual production uses, anthracite C >=75%.
(2) ash content is low: the increase of ash content will reduce the grade of sinter, generally require coke powder ash content < 13%, smokeless ash content of coal < 15%.
(3) volatile matter is few: the increase of volatile matter will deteriorate permeability of sintering material bed, reduce sintering output, while being adhered to fan rotor
On, fan life is reduced, and influence dust removing effects, it is desirable that the best < 5% of coke powder, anthracitic volatile matter.(4) S, N etc. are miscellaneous in coal
Matter content reduces to the greatest extent.It is sintered the solid fuel used at present are as follows: coke powder and anthracite.That recommends in " sintering process design handbook " consolidates
Fluid fuel enters field condition: ash content < 15%, sulphur≤1% of coke powder, anthracitic ash content≤15%, volatile matter < 8%, sulphur≤1%.
With to NO in sintering flue gasXDischarge standard be continuously improved, most sintering plants are made using full coke powder
For sintering solid fuel.Use coke powder to have following problem as fuel: coke production need to consume high-quality coking coal, coke production
Temperature is high, the time is long, energy consumption is high, and it is high that coking generates concentration of harmful substance in coking, gas purification, chemical products removal process
Waste water, coke powder cost are higher than anthracite.
As it can be seen that if can be developed a kind of using semi-coke as raw material, low pollution, energy-efficient with semi-coke (semicoke) distinctive performance
Technique, it is meaningful for producing clean sintering special solid fuel.If sintering production use is produced by raw material of semi-coke
Clean solid fuel be fuel, be greatly expanded the use scope of semi-coke；Clean solid fuel replaces sintering coke, subtracts
The pollutant, environmental-friendly that production equivalent coke generates is lacked.
Clean solid fuel is a kind of customized product, is formed by semi-coke (semicoke) modification, has low-sulfur, low ash, low
The characteristic of volatile matter fully meets the requirements of sintering solid fuel.
One is built near sintered production line with semi-coke (semicoke) as raw material, is modified the production of production clean solid fuel
Line, the product of production for be sintered provide low-sulfur, low nitrogen, low ash clean solid fuel, the byproduct knot generated in production process
Sintering production process is closed, is comprehensively utilized, semi-coke modifying process does not generate contaminated wastewater.
In view of above-mentioned reason, seeks exploitation semi-coke (semicoke) and be modified to the technique of clean solid fuel as the field skill
Art personnel's pursues a goal.
Summary of the invention
Object of the present invention is to provide a kind of clean solid fuel modified based on semi-coke in view of the defects existing in the prior art
Preparation process and its system.
The present invention to achieve the above object, adopts the following technical scheme that a kind of clean solid fuel modified based on semi-coke
Preparation process, which comprises the steps of:
Using the semi-coke block of semicoke as raw material: semi-coke block being put into orchid of the preheating furnace indirect heating to 450 DEG C or so, after heating first
Carbon block immediately enters high temperature anaerobic heating process and is heated to 1000 DEG C or so, completes the volatilization of vaporization at high temperature point and expects the height of block
Super-low sulfur clean solid fuel finally can be generated in warm miniature after steam desulfurization is handled.
A kind of clean solid fuel preparation process modified based on semi-coke, includes the following steps:
Using the powdery semi-coke of semicoke as raw material: first by semi-coke powder with binder mixing cold moudling, cold pressing block is in preheating furnace
Indirect heating completes the curable type of cold pressing block and the volatilization of low temperature volatile matter to 450 DEG C or so under middle low temperature, completes pretreated
Cold pressing block immediately enters anaerobic heating process and is heated to 1000 DEG C or so, completes the volatilization of vaporization at high temperature point and expects the height of block
Super-low sulfur clean solid fuel can be generated in warm miniature after steam desulfurization is handled.
A kind of clean solid fuel preparation system modified based on semi-coke, including semi-coke storehouse, the output end in the semi-coke storehouse
It is connect with heat accumulating type indirect heating rotary furnace, the output end of the heat accumulating type indirect heating rotary furnace connects by hot material Guan Yure sieve
It connects, the output end of the heat sieve is connect by carrier chain with anaerobic heating rotary furnace, the output end of the anaerobic heating rotary furnace
It is connect with desulfuring furnace, the output end of the desulfuring furnace is connect by hot finished product carrier chain with vertical cooling furnace.
Further, the anaerobic heating rotary furnace and desulfuring furnace are arranged using integral structure.
Further, anaerobic high temperature gas generator is provided on the anaerobic heating rotary furnace.
Further, the desulfuring furnace side is provided with high-temperature steam generator.
Further, the vertical cooling furnace side is additionally provided with cooling boiler, the input terminal of the cooling boiler and institute
Vertical cooling furnace upper gas outlet connection is stated, the output end of the cooling boiler passes through under circulating fan and vertical cooling furnace
The connection of portion's gas input.
Beneficial effects of the present invention: with semi-coke (semicoke) for primary raw material, blocky semi-coke is directly handled the present invention, and powdery is blue
Charcoal adds binder, and cold moudling post-processing has been saved valuable high-quality coking coal, reduced costs；Semi-coke block, cold pressing block use
The mode of direct high temperature anaerobic heating is carbonized, and the time for generating clean solid fuel greatly shortens, and process energy consumption is low；Semi-coke (half
It is burnt) modifying process do not generate contaminated wastewater；Byproduct combination sintering production directly obtains utilization.
Detailed description of the invention
Fig. 1 is the present invention using semi-coke block as the process flow chart of raw material.
Fig. 2 is the present invention using semi-coke powder as the process flow chart of raw material.
Fig. 3 is the flow sheet that semi-coke of the present invention (semicoke) is modified to clean solid fuel.
Specific embodiment
As shown in Figure 1, the present invention is using semi-coke block as the process flow chart of raw material.
To prevent semi-coke block from bursting, semi-coke (semicoke) initially enters preheating furnace indirect heating to 450 DEG C or so, after heating
Semi-coke (semicoke) immediately enters high temperature anaerobic heating process and is heated to 1000 DEG C or so, completes volatilization and the material of vaporization at high temperature point
The high temperature miniature of block is heated to 1000 DEG C of material block, super-low sulfur clean solid fuel can be generated after steam desulfurization is handled.
As shown in Fig. 2, the present invention is using semi-coke powder as the process flow chart of raw material.
Semi-coke (semicoke) powder is heated to 450 DEG C or so with binder mixing cold moudling, cold pressing block indirectly in preheating furnace,
The curable type of cold pressing block and the volatilization of low temperature volatile matter are completed under middle low temperature, are completed pretreated cold pressing block, are immediately entered nothing
Oxygen heating process is heated to 1000 DEG C or so, completes the volatilization of vaporization at high temperature point and expects the high temperature miniature of block, is heated to 1000 DEG C
Material block, super-low sulfur clean solid fuel can be generated after steam desulfurization is handled.
Shown in Fig. 3, in production, semi-coke block or cold pressing block enter heat accumulating type indirect heating rotary furnace 2 from semi-coke storehouse 1；
Semi-coke or cold pressing block are heated to 450 DEG C or so in heat accumulating type indirect heating rotary furnace 2, and the hot material block come out of the stove passes through hot material pipe
3 enter in heat sieve 4, and hot material is discharged through 4 screening of overheat sieve, powder by powder discharge pipe 5, and block is sealed by hot material block carrier chain 6
It is transported in anaerobic heating rotary furnace 8, the nothing that the heat source of anaerobic heating rotary furnace 8 is generated from anaerobic high temperature gas generator 9
Oxygen high-temperature gas, hot material block are heated to 1000 DEG C or so in anaerobic heating rotary furnace 8, generate high temperature cabonization block, heating
The coal gas that the pyrolysis of hot material block generates in the process is discharged by coal gas discharge pipe 7；The same desulfurization of anaerobic heating rotary furnace 8 in the present embodiment
Furnace 10 uses integral structure, and 1000 DEG C or so of high temperature cabonization block enters directly into desulfuring furnace 10, when needing to produce lightweight
High-temperature steam generator 12 generates 1000 DEG C or so of high-temperature steam when clean solid fuel, and high-temperature steam enters in desulfuring furnace 10
Desulfurization process is carried out to high-temp solid, high-temperature steam generator 12 provides a small amount of high temperature and steams when producing heavy clean solid fuel
Vapour stops working, and the processed gas that desulfurization process generates is discharged by sweet gas discharge pipe 13；It is clear by being discharged in desulfuring furnace 10
Clean solid fuel is transported in vertical cooling furnace 14 by the sealing of hot finished product carrier chain 11, and hot finished product is same in vertical cooling furnace 14 to follow
Ring cooling air 15 carries out countercurrent heat exchange, and vertical cooling furnace 14 is discharged in clean solid fuel after cooling, in vertical cooling furnace 14
The circulating cooling gas 15 of top discharge, into after crossing the cooling of cooling boiler 16, by vertical cooling furnace 14 after being pressurizeed by circulating fan 17
Lower part blasts in furnace, cools down again to hot finished product.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of clean solid fuel preparation process modified based on semi-coke, which comprises the steps of:
Using the semi-coke block of semicoke as raw material: semi-coke block being put into orchid of the preheating furnace indirect heating to 450 DEG C or so, after heating first
Carbon block immediately enters high temperature anaerobic heating process and is heated to 1000 DEG C or so, completes the volatilization of vaporization at high temperature point and expects the height of block
Super-low sulfur clean solid fuel finally can be generated in warm miniature after steam desulfurization is handled.
2. a kind of clean solid fuel preparation process modified based on semi-coke, which comprises the steps of:
Using the powdery semi-coke of semicoke as raw material: first by semi-coke powder with binder mixing cold moudling, cold pressing block is in preheating furnace
Indirect heating completes the curable type of cold pressing block and the volatilization of low temperature volatile matter to 450 DEG C or so under middle low temperature, completes pretreated
Cold pressing block immediately enters anaerobic heating process and is heated to 1000 DEG C or so, completes the volatilization of vaporization at high temperature point and expects the height of block
Super-low sulfur clean solid fuel can be generated in warm miniature after steam desulfurization is handled.
3. a kind of clean solid fuel preparation system being modified as claimed in claim 1 or 2 based on semi-coke, which is characterized in that
Including semi-coke storehouse, the output end in the semi-coke storehouse is connect with heat accumulating type indirect heating rotary furnace, and the heat accumulating type indirect heating is returned
The output end of converter is connected by hot material Guan Yure sieve connection, the output end of the heat sieve by carrier chain and anaerobic heating rotary furnace
It connects, the output end of the anaerobic heating rotary furnace is connect with desulfuring furnace, and the output end of the desulfuring furnace passes through hot finished product carrier chain
It is connect with vertical cooling furnace.
4. a kind of clean solid fuel preparation system modified based on semi-coke as claimed in claim 3, which is characterized in that described
Anaerobic heating rotary furnace and desulfuring furnace are arranged using integral structure.
5. a kind of clean solid fuel preparation system modified based on semi-coke as claimed in claim 3, which is characterized in that described
Anaerobic high temperature gas generator is provided on anaerobic heating rotary furnace.
6. a kind of clean solid fuel preparation system modified based on semi-coke as claimed in claim 3, which is characterized in that described
Desulfuring furnace side is provided with high-temperature steam generator.
7. a kind of clean solid fuel preparation system modified based on semi-coke as claimed in claim 3, which is characterized in that
The vertical cooling furnace side is additionally provided with cooling boiler, on the input terminal and the vertical cooling furnace of the cooling boiler
The output end of the connection of portion's gas discharge outlet, the cooling boiler is connected by circulating fan and vertical cooling furnace lower gas input terminal
It connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910563783.7A CN110358597A (en) | 2019-06-26 | 2019-06-26 | A kind of the clean solid fuel preparation process and its system modified based on semi-coke |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910563783.7A CN110358597A (en) | 2019-06-26 | 2019-06-26 | A kind of the clean solid fuel preparation process and its system modified based on semi-coke |
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| CN110358597A true CN110358597A (en) | 2019-10-22 |
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| CN201910563783.7A Withdrawn CN110358597A (en) | 2019-06-26 | 2019-06-26 | A kind of the clean solid fuel preparation process and its system modified based on semi-coke |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2792824C1 (en) * | 2022-07-06 | 2023-03-24 | Акционерное общество "Фирма "ПЕРМАНЕНТ К&М" | Method for producing fuel briquettes from coke breeze |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106635220A (en) * | 2016-11-16 | 2017-05-10 | 北京神雾环境能源科技集团股份有限公司 | Specific system for improving strength of pyrolytic semi-coke molded pellet of lignite and application thereof |
| CN207102615U (en) * | 2017-07-20 | 2018-03-16 | 西安建筑科技大学 | A kind of device with microwave irradiation regenerated modified semicoke |
| CN107974302A (en) * | 2017-12-15 | 2018-05-01 | 浙江天禄环境科技有限公司 | One kind gasification reduction high-temperature oil gas dedusting cooling tar reduction and refining separator |
-
2019
- 2019-06-26 CN CN201910563783.7A patent/CN110358597A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106635220A (en) * | 2016-11-16 | 2017-05-10 | 北京神雾环境能源科技集团股份有限公司 | Specific system for improving strength of pyrolytic semi-coke molded pellet of lignite and application thereof |
| CN207102615U (en) * | 2017-07-20 | 2018-03-16 | 西安建筑科技大学 | A kind of device with microwave irradiation regenerated modified semicoke |
| CN107974302A (en) * | 2017-12-15 | 2018-05-01 | 浙江天禄环境科技有限公司 | One kind gasification reduction high-temperature oil gas dedusting cooling tar reduction and refining separator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2792824C1 (en) * | 2022-07-06 | 2023-03-24 | Акционерное общество "Фирма "ПЕРМАНЕНТ К&М" | Method for producing fuel briquettes from coke breeze |
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Application publication date: 20191022 |