CN210945492U - Coupling system between semi coke and low-rank coal time-phased modification and steel heat supply - Google Patents
Coupling system between semi coke and low-rank coal time-phased modification and steel heat supply Download PDFInfo
- Publication number
- CN210945492U CN210945492U CN201921182596.6U CN201921182596U CN210945492U CN 210945492 U CN210945492 U CN 210945492U CN 201921182596 U CN201921182596 U CN 201921182596U CN 210945492 U CN210945492 U CN 210945492U
- Authority
- CN
- China
- Prior art keywords
- rotary kiln
- coal
- low
- boiler
- coke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003245 coal Substances 0.000 title claims abstract description 48
- 239000000571 coke Substances 0.000 title claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 20
- 239000010959 steel Substances 0.000 title claims abstract description 20
- 230000004048 modification Effects 0.000 title claims abstract description 13
- 238000012986 modification Methods 0.000 title claims abstract description 13
- 230000008878 coupling Effects 0.000 title claims abstract description 12
- 238000010168 coupling process Methods 0.000 title claims abstract description 12
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000003546 flue gas Substances 0.000 claims abstract description 9
- 238000003860 storage Methods 0.000 claims abstract description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000779 smoke Substances 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 5
- 230000023556 desulfurization Effects 0.000 claims abstract description 5
- 239000000428 dust Substances 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 abstract description 16
- 239000004449 solid propellant Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000005245 sintering Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000000197 pyrolysis Methods 0.000 description 10
- 238000011161 development Methods 0.000 description 9
- 239000002994 raw material Substances 0.000 description 9
- 239000003034 coal gas Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 229910052717 sulfur Inorganic materials 0.000 description 7
- 239000011593 sulfur Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 239000006227 byproduct Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 238000004939 coking Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000012265 solid product Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 2
- 239000003830 anthracite Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011269 tar Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011027 product recovery Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Coke Industry (AREA)
Abstract
The utility model discloses a coupling system between semi-coke and low-rank coal time-sharing modification and steel heating, which comprises a coal storage bin, wherein the output end of the coal storage bin is connected with a first rotary kiln, the output end of the first rotary kiln is connected with a second rotary kiln through a material pipeline, and the discharge port of the second rotary kiln is connected with a cooling tower through a material pipeline; the smoke outlets of the first rotary kiln and the second rotary kiln are respectively connected with the smoke inlet of the boiler; the first rotary kiln and the second rotary kiln are respectively heated by a heat accumulating type hot gas furnace and a heat accumulating type burner; the steam outlet of the boiler is connected with a city heating system, and the flue gas outlet of the boiler is sequentially connected with a denitration device, a desulfurization tower, a bag-type dust remover, an induced draft fan and a chimney. The utility model discloses a system is at the in-process of the clean solid fuel of preparation, and energy utilization is rateed and is increased more, environmental protection more, and is pollution-free more.
Description
Technical Field
The utility model relates to a coupling system between blue charcoal and low order coal timesharing modification and steel heat supply.
Background
At present, low-rank coal is a coal type with low coalification degree, and at present, the quality improvement of the low-rank coal is mainly low-temperature pyrolysis, coal tar is extracted, coal gas is pyrolyzed to generate electricity, and a solid byproduct is semi-coke. Large-scale coal pyrolysis plants are built in parts of Shaanxi and inner Mongolia, a large amount of semi coke is generated, and the high-efficiency utilization, quality improvement and synergy of the semi coke have great significance.
Semi coke, the dry distillation temperature is about 600 ℃, the semi coke is produced by a single coal, the semi coke has fixed carbon of more than 82 percent, volatile components of less than 4 percent, ash of less than 6 percent, sulfur of less than 0.3 percent and water of less than 10 percent; specific resistance >3500 μ Ω M, particle size: 15-25 mm. The semi-coke has the advantages of high fixed carbon, high specific resistivity, high chemical activity, low ash content, low sulfur, low phosphorus and low moisture, but the strength and the crushing resistance of the semi-coke are poor, the coke product in general meaning is mainly used in metallurgical industries such as blast furnace iron making, casting and the like, the semi-coke can not be used for blast furnace production, and about 15 percent of the semi-coke can be used for replacing the coke in sintering production in part of steel mill experiments.
The conditions for the entry of solid fuel for sintering recommended in the handbook of sintering design: the ash content of the coke powder is less than 15 percent, the sulfur content is less than or equal to 1 percent, the ash content of the anthracite is less than or equal to 15 percent, the volatile matter is less than 8 percent, and the sulfur content is less than or equal to 1 percent.
Along with the NO in the sintering flue gasXThe emission standard of (A) is continuously improved, and most of the materials are sinteredPlants have used whole coke powder as a sintering solid fuel. The use of coke powder as fuel has the following problems: the coke production needs to consume high-quality coking coal, the temperature in the coke production process is high, the time is long, the energy consumption is high, the coking generates wastewater with high concentration of harmful substances in the coking, gas purification and chemical product recovery processes, and the cost of the coke powder is higher than that of anthracite.
The national coal deep processing industry demonstration plan indicates that: the coal processing and converting industry for producing various clean fuels and basic chemical raw materials by taking coal as a main raw material specifically comprises the fields of coal-to-oil, coal-to-natural gas, low-rank coal quality-based utilization, coal-to-chemical products, co-production of various products and the like. The method indicates the development direction for the quality-divided utilization of the low-rank coal, moderately develops the deep processing industry of the coal, is not only the requirement of the technical reserve and the capacity reserve of the national energy strategy, but also the important measure for promoting the clean and efficient utilization of the coal and guaranteeing the national energy safety, and particularly, the method really promotes the major breakthrough of the technical development of the Chinese low-rank coal in the thirteen-five period by taking the pyrolysis of the low-rank coal to be converted into a hand grip, taking the graded quality-divided utilization as the direction, taking the environmental-friendly energy efficiency recycling economy as the key point and taking the oil-gas electric.
In the country [ act plan for clean and efficient utilization of coal (2015-2020) ], the third section, the fifth section and development of graded utilization of coal according to quality and grade to improve the comprehensive utilization efficiency of coal resources include the following contents: …
And a novel coal utilization mode of quality classification, energy combination and integrated co-production is gradually realized. The coal-gasification-electric-heat integrated development is encouraged, and the coupling integration of all systems is enhanced. The coupling development between coal chemical industry and power generation, oil gas chemical industry, steel, building materials and other industries is promoted in the regions with the conditions, the cyclic utilization of substances and the gradient utilization of energy are realized, and the production cost, the resource consumption and the pollution emission are reduced.
Therefore, the development of a coupling development technology between the semi-coke and low-rank coal time-phased modification and steel heat supply is significant. In winter, low-rank coal is used as a raw material, a large amount of generated pyrolysis coal gas is supplied to a boiler, and steam is generated to supply heat for cities. In the non-heating period, semi-coke is used as a raw material, and a small amount of generated pyrolysis gas enters a gas pipe network of a steel mill for use in the whole field. The product is clean solid fuel for sintering to replace coke.
The clean solid fuel is a self-defined product, is formed by modifying semi coke or low-rank coal, has the characteristics of low sulfur, low ash and low volatile, and completely meets various requirements of the solid fuel for sintering.
A production line for producing clean solid fuel by modification by using semi-coke and low-rank coal as raw materials is built in a steel plant, the produced product provides low-sulfur, low-nitrogen and low-ash clean solid fuel for sintering, byproduct coal gas generated in the production process supplies heat for cities and fuel for the steel plant, and no wastewater pollution is generated in the modification process.
In view of the above, the development of the coupling development technology between the time-phased modification of semi-coke and low-rank coal and the steel heat supply is the pursuit of the goal of those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a coupling system between blue charcoal and low order coal timesharing modification and steel heat supply to the defect that prior art exists.
The utility model discloses a realize above-mentioned purpose, adopt following technical scheme: a coupling system between semi-coke and low-rank coal time-sharing modification and steel heating comprises a coal storage bin, wherein the output end of the coal storage bin is connected with a first rotary kiln, the output end of the first rotary kiln is connected with a second rotary kiln through a material pipeline, and the discharge port of the second rotary kiln is connected with a cooling tower through a material pipeline; the smoke outlets of the first rotary kiln and the second rotary kiln are respectively connected with the smoke inlet of the boiler; the first rotary kiln and the second rotary kiln are respectively heated by a heat accumulating type hot gas furnace and a heat accumulating type burner; the steam outlet of the boiler is connected with a city heating system, and the flue gas outlet of the boiler is sequentially connected with a denitration device, a desulfurization tower, a bag-type dust remover, an induced draft fan and a chimney.
Furthermore, a first metal radiation pipe is arranged on the first rotary kiln, and a second metal radiation pipe is arranged on the second rotary kiln
The utility model has the advantages that: the utility model discloses a system is at the in-process of the clean solid fuel of preparation, and energy utilization is rateed and is increased more, environmental protection more, and is pollution-free more.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The embodiment of the utility model discloses a coupling system between semi coke and low-rank coal time-sharing modification and steel heating, which comprises a coal storage bin 1, wherein the output end of the coal storage bin 1 is connected with a first rotary kiln 3, the output end of the first rotary kiln 3 is connected with a second rotary kiln 16 through a material pipeline 18, and the discharge port of the second rotary kiln 16 is connected with a cooling tower 14 through a material pipeline; the smoke outlets of the first rotary kiln 3 and the second rotary kiln 16 are respectively connected with the smoke inlet of the boiler 5; the first rotary kiln 3 and the second rotary kiln 16 are respectively heated by a heat accumulating type hot gas furnace 12 and a heat accumulating type burner 13; the steam outlet of the boiler 5 is connected with a city heating system, and the flue gas outlet of the boiler 5 is sequentially connected with a denitration device 6, a desulfurization tower 7, a bag-type dust remover 8, an induced draft fan 9 and a chimney 10.
In order to heat the rotary kiln better and to make the heating more uniform, a first metal radiant tube 2 is arranged on the first rotary kiln 3, and a second metal radiant tube 17 is arranged on the second rotary kiln 16.
During production, semi coke or low-price coal enters a coal storage bin 1 and then enters a first rotary kiln 3, high-temperature coal gas generated by a heat accumulating type hot gas furnace 12 heats a first metal radiation pipe 2 through a hot gas pipeline 11, the temperature of the high-temperature coal gas is heated to about 600 ℃ by the first metal radiation pipe 2, the heated semi coke or low-price coal enters a second rotary kiln 16 through a corresponding material pipeline 18, the temperature of the high-temperature coal gas is heated to 1000 ℃ by a second metal radiation pipe 17 heated by a heat accumulating type burner 13, the coal after pyrolysis enters a cooling cylinder 14 to be cooled to a temperature lower than 120 ℃, and finally the obtained special clean solid fuel 15 for sintering is discharged out of the cooling cylinder 14.
In the heating period, low-rank coal is used as a raw material, a large amount of pyrolysis coal gas is produced as a byproduct to be supplied to the boiler 5 for combustion, and the produced steam supplies heat for cities. The flue gas after burning realizes the ultra-clean emission, and the flue gas passes through denitrification facility 6, desulfurizing tower 7, sack cleaner 8, draught fan 9, chimney 10 back and discharges into the atmosphere, and its emission index reaches the standard of firing the emission of natural gas boiler.
In the non-heating period, semi coke is used as a raw material, a small amount of low-tar pyrolytic gas is generated and is converged into a gas pipe network of a steel mill for uniform allocation and use in the steel mill.
In this embodiment, the pyrolysis temperature exceeds 1000 ℃, the solid product has lower volatile components than semi-coke, the combustion performance of the solid product is closer to that of coke, and the solid product has the characteristics of low sulfur, low ash and low volatile components, completely meets various requirements of solid fuel for sintering, and is customized as the special clean solid fuel for sintering 15.
Blast furnace gas produced by a blast furnace of a steel mill is used as fuel, semi coke or low-rank coal is heated and modified into clean solid fuel, and the clean solid fuel is used for sintering to replace coke.
The heating process is two-stage heating, one stage adopts an indirect heating mode, and the materials are heated to about 600 ℃; the second stage adopts a heat accumulating type high-temperature oxygen-free heating mode, and the materials are heated to about 1000 ℃.
In the heating period, low-rank coal is used as a raw material, a large amount of pyrolysis coal gas is produced as a byproduct for combustion in a boiler, and the produced steam supplies heat for cities. The flue gas after burning realizes the ultra-clean emission, and the flue gas is discharged into the atmosphere after desulfurization, denitration and dust removal, and the emission index reaches the emission standard of a natural gas-fired boiler.
In the non-heating period, semi-coke is used as a raw material to generate a small amount of low-tar pyrolytic gas which is gathered into a gas pipe network of a steel mill for uniform allocation and use in the steel mill
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (1)
1. The coupling system for the semi-coke and low-rank coal time-sharing modification and the steel heat supply room is characterized by comprising a coal storage bin, wherein the output end of the coal storage bin is connected with a first rotary kiln, the output end of the first rotary kiln is connected with a second rotary kiln through a material pipeline, and the discharge port of the second rotary kiln is connected with a cooling tower through a material pipeline; the smoke outlets of the first rotary kiln and the second rotary kiln are respectively connected with the smoke inlet of the boiler; the first rotary kiln and the second rotary kiln are respectively heated by a heat accumulating type hot gas furnace and a heat accumulating type burner; the steam outlet of the boiler is connected with the urban heat supply system, and the flue gas outlet of the boiler is sequentially connected with the denitration device, the desulfurization tower, the bag-type dust remover, the induced draft fan and the chimney; the first rotary kiln is provided with a first metal radiation pipe, and the second rotary kiln is provided with a second metal radiation pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921182596.6U CN210945492U (en) | 2019-07-25 | 2019-07-25 | Coupling system between semi coke and low-rank coal time-phased modification and steel heat supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921182596.6U CN210945492U (en) | 2019-07-25 | 2019-07-25 | Coupling system between semi coke and low-rank coal time-phased modification and steel heat supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210945492U true CN210945492U (en) | 2020-07-07 |
Family
ID=71391009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921182596.6U Active CN210945492U (en) | 2019-07-25 | 2019-07-25 | Coupling system between semi coke and low-rank coal time-phased modification and steel heat supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210945492U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110628444A (en) * | 2019-07-25 | 2019-12-31 | 江苏凤谷节能科技有限公司 | Coupling system between semi coke and low-rank coal time-phased modification and steel heat supply |
-
2019
- 2019-07-25 CN CN201921182596.6U patent/CN210945492U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110628444A (en) * | 2019-07-25 | 2019-12-31 | 江苏凤谷节能科技有限公司 | Coupling system between semi coke and low-rank coal time-phased modification and steel heat supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103013576A (en) | IGCC (Integrated Gasification Combined Cycle) poly-generation device and method based on pyrolysis and gasification of low metamorphic powdered coal | |
| CN101624531B (en) | Device for preparing bio-oil by utilizing biomass spouted fluidized bed through pyrolysis and fractional condensation | |
| CN104501171B (en) | Garbage derivatived fuel (RDF) pyrolysis gasification system | |
| CN104877713B (en) | A kind of pyrolysis gas of biomass secondary high-temperature cracking and afterheat recycling system | |
| CN105295982B (en) | The Poly-generation utilization system and its technique of a kind of oil shale attendants | |
| CN101747943A (en) | Method by utilizing livestock manure to produce hydrogenous gas and other products in a step-by-step thermal decomposition way and device | |
| CN101250419B (en) | A kind of coal gas internal heat low-temperature dry distillation method | |
| CN105509059A (en) | Power generation system and power generation method | |
| CN202953993U (en) | Oil shale drying, heating, oil refining, semi-coke combustion integration device | |
| CN107022363A (en) | A kind of continuous biomass pyrolysis gas is reversely flowd back towards with charcoal gas cogeneration facility | |
| CN105733730A (en) | Biomass micron carbonized power high-temperature combustion method | |
| CN101665704A (en) | Rapid and large-scale method for producing biofuel | |
| CN205701817U (en) | One way of life rubbish and agriculture and forestry organic waste material carbonization circulation comprehensive processing system | |
| CN210945492U (en) | Coupling system between semi coke and low-rank coal time-phased modification and steel heat supply | |
| CN202401028U (en) | Multi-tube spiral device provided with air flue and utilizing carbonization and cracking of biomass to produce fuel gas | |
| CN105295983B (en) | A kind of oil shale utilizes system and its technique with the Poly-generation of organic solid castoff | |
| CN201851184U (en) | Waste heat power generation system for coke oven | |
| CN205874319U (en) | Biomass briquette fuel's heat, electricity, gas cogeneration system | |
| CN205258385U (en) | Fixed bed biological matter gasification - pyrolysis of coal coupling poly -generation device | |
| CN101789725B (en) | Sludge energy graded use and combined cycle generating process | |
| CN203295464U (en) | Biomass gasification drying system | |
| CN207756595U (en) | A kind of electricity generation system of debirs clean utilization | |
| CN101974351A (en) | Scale fixed bed biomass gasification power generation production technology and complete equipment | |
| CN102676189A (en) | Method adopting pyrolysis and formation for biomass carbon production | |
| CN202953992U (en) | Integrated device of oil shale gas-solid heat carrier retorting and semi-coke combustion electricity generation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |