CN111187634B - Intelligent forming, stacking and coking production method - Google Patents
Intelligent forming, stacking and coking production method Download PDFInfo
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- CN111187634B CN111187634B CN201911161465.4A CN201911161465A CN111187634B CN 111187634 B CN111187634 B CN 111187634B CN 201911161465 A CN201911161465 A CN 201911161465A CN 111187634 B CN111187634 B CN 111187634B
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- 238000004939 coking Methods 0.000 title claims abstract description 57
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 239000003245 coal Substances 0.000 claims abstract description 294
- 239000000571 coke Substances 0.000 claims abstract description 88
- 238000000034 method Methods 0.000 claims abstract description 71
- 230000008569 process Effects 0.000 claims abstract description 59
- 238000010791 quenching Methods 0.000 claims abstract description 37
- 230000000171 quenching effect Effects 0.000 claims abstract description 37
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 238000011049 filling Methods 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims description 57
- 239000004484 Briquette Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 14
- 229910052717 sulfur Inorganic materials 0.000 claims description 14
- 239000011593 sulfur Substances 0.000 claims description 14
- 239000003818 cinder Substances 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 239000003034 coal gas Substances 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 7
- 238000012216 screening Methods 0.000 claims description 7
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 239000000084 colloidal system Substances 0.000 claims 1
- 238000010248 power generation Methods 0.000 claims 1
- 230000008961 swelling Effects 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000007493 shaping process Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 238000000265 homogenisation Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000003028 elevating effect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
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- 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
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G57/00—Stacking of articles
- B65G57/32—Stacking of articles characterised by stacking during transit
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Coke Industry (AREA)
Abstract
The invention relates to an intelligent forming, stacking and coking production method, which comprises the steps of coal sample pretreatment, forming, stacking, coal charging and coke quenching, wherein the forming and stacking process is intelligent; the shaping in the intelligence shaping specifically includes raw materials measurement feed, homogenization, die-filling, shaping and drawing of patterns, forms one set of intelligent control system, and the shaping coal block size is long: width: the height is 500-1000 mm respectively: 400-600 mm: 400-650 mm, and the accuracy of the size of the molded coal block is within +/-2 mm; the intelligence pile up neatly adopts planer-type pile up neatly, and the planer-type pile up neatly comprises pile up neatly support, pile up neatly elevating platform and multiunit pile up neatly tongs, and the size of pile up neatly into the coal wall is long: width: the height is 12000-25000 mm respectively: 400-3400 mm: 1000-10000 mm; the invention has the characteristics of simple process flow and high automation degree, and has obvious energy, environmental, social and economic benefits of energy conservation, yield increase and emission reduction compared with the prior art.
Description
Technical Field
The invention belongs to the technical field of coal coking, and particularly relates to an intelligent forming, stacking and coking production method.
Background
The coke is a product formed by heating bituminous coal to a certain temperature under the condition of isolating air, and drying, melting, bonding, solidifying, shrinking and the like, wherein the process is called a coking process, and coke oven gas generated in the coking process after recovery and purification is a high-calorific-value fuel and an important organic synthesis industrial raw material.
China has relatively abundant coal resources, but the coal resources only account for 36.78% of the total coal reserves, wherein the reserve of main coking coal for single coking is only 6.21%. In addition, the coal sources and the coal types are distributed unevenly in provinces of the whole country, and the coal reserves in some provinces, particularly in some regions in the south are very small and mainly non-coking coal. Therefore, how to greatly expand the utilization of the non-coking coal is an important subject for the development of the coking industry in China at present. Besides a large amount of coke needed in blast furnace iron making, the coke needed by other industries is not less, such as foundry coke, gasification coke, electric coke and the like. The foundry coke is the main fuel for melting iron in cupola furnace, and is used to melt furnace charge, overheat molten iron, support material column, maintain good air permeability and supply carbon.
The method is an important method for enlarging coking coal source. The coal blending proportion of non-caking and weakly caking coal can be enlarged as well as the coal blending proportion of long flame coal, anthracite and the like can be adopted for coking. The existing coke production process generally uses some strong caking coal with scarce resources, and has low production efficiency and poor thermal efficiency. The invention patent with patent number 201710608272.3 discloses a production process of preheated coal palletized coke, but does not disclose specific characteristic technology, does not fundamentally solve the problems, and simultaneously has the problems of environmental pollution caused by coal gas leakage and the like. Therefore, there is a need to develop new coking processes to innovate existing processes.
The problems of large consumption of main coking coal, high coking cost, low degree of mechanization, high labor intensity of workers and serious environmental pollution in the coking process in the prior art are solved, along with increasingly strict environmental protection pressure, shortage of high-quality main coking coal, gradual improvement of the degree of mechanization and labor liberation, and the prior coking needs to be optimized and upgraded to solve the problems.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides an intelligent forming stacking coking production method, which specifically comprises the processes of coal sample pretreatment, forming, stacking, coal charging, coke quenching and coke quenching, wherein the forming and stacking process is intelligent forming and intelligent stacking, and a fully automatic operation is adopted, and the method specifically comprises the following steps:
1) pretreatment: the coal is crushed to be less than 3mm, the coal sample is uniformly supported according to the water content, ash content, volatile matter, sulfur content, bonding index, colloidal layer thickness, expansion degree and granularity parameters in the coal in proportion and is conveyed to a coal bunker for standby, the granularity of the pretreated coal sample is less than 3mm and accounts for more than 85%, the standard requirement in the prior art is more than 90%, compared with the prior art, the technical scheme has lower requirement, the preparation process of the raw material coal is simple, the prepared coal sample has the water content of 9-15%, the ash content of 8-12%, the volatile matter of 22-32%, the sulfur content of 0.8-1.2%, the bonding index of 55-65 and the colloidal layer thickness of 8-14. (ii) a
2) Intelligent forming: the method specifically comprises the steps of raw material metering feeding, homogenizing, mold filling, molding and demolding, wherein a programmed control system is adopted in 5 processes to form a set of intelligent control system, and the density of molded coal blocks in molding is 1.1-1.4t/m3The compressive strength is 2.0-3.5 MPa, and the rupture strength is 1.5-2.5 MPa, and the coal briquette intensity of formation is high, stable, do not have the floating dust for do not have coal dust, smoke and dust production in the coal-charging process, environmental aspect is showing and is improving, the length of intelligent control shaping coal briquette: width: the height is 500-3000 mm respectively: 400-600 mm: 400-1000 mm, the accuracy of the size of the formed coal block is controlled within +/-2 mm, and initial pressure, exhaust and stop are set in the processReserving, draining, performing static pressure and final pressure, wherein the whole process needs 20-30 s;
3) intelligent stacking: after the coal cinder comes out from system coal cinder professional equipment, place the coal cinder on the coal cinder transport bed via the coal pusher, through putting the coal cinder on the special layer board of coal cinder in advance the sign indicating number system, the pile up neatly becomes the length of coal wall: width: the height is 12000-25000 mm respectively: 400-3400 mm: 1000-10000 mm, or a plurality of groups according to the length, and then combining into a coal wall with the length of 12000-25000 mm, wherein the stacking device adopts gate type stacking, and the time for stacking once is between 5-8 minutes.
4) Coal charging: the coal piled up into the coal wall is integrally loaded into a coke oven to be coked for 18 to 80 hours through a coal loading vehicle, coal gas generated in the coking process is recycled or used for generating power, red coke is used for removing coke quenching, and the density of the coal after the coal loading is molded is 1.1 to 1.4t/m3The coal wall has good stability, and can not hang feet and collapse; the formed coal wall is uniform, no smoke is generated in the coal charging process, no floating dust is generated, the operation environment is friendly, the environment-friendly benefit is remarkable, the gaps among coal particles become small, the heat and mass transfer effect is remarkable, and meanwhile, the moisture in the pressed and formed coal is reduced by 10-20%, so that the heat consumption of coking is reduced by 8-15%, wherein the coking time of the whole coal wall in the coke oven is 18-80 hours, the coking temperature is 1100 ℃, and the heating medium is coke oven gas or blast furnace gas or the combination of the coke oven gas and the blast furnace gas;
5) quenching coke: and pushing the red coke into a coke quenching car, and screening and storing the red coke after quenching to obtain coke products with different grades.
Further, the usage amount of the non-caking coal in the coal sample pretreated in the step 1) is increased by 15-25%, precious main coking coal resources are saved, the coal blending cost is obviously reduced, the coal blending cost is generally saved by 16-20%, the cost is saved by about 45-60 yuan according to the current 300 yuan/t, and the economic benefit is obvious.
Furthermore, the forming pressure in the intelligent forming in the step 2) is between 40 and 120MPa, the compression ratio of the raw coal is between 1.6 and 1.9, so that the moisture of the coal as fired is maintained at about 8.5 percent, the moisture of the formed coal briquette is reduced by 15 to 30 percent compared with the raw coal, the water in the forming process has no oil, dust and ammonia nitrogen, the requirement of recycling the reclaimed water is completely met after the simple decoloring treatment, in addition, the coal loading density is increased by 15 to 25 percent after the technology, which means that 15 to 25 percent of coal can be loaded into the same coke oven each time, and the productivity is improved by 15 to 25 percent.
Further, the forming process in the intelligent forming in the step 2) comprises a low-pressure forming stage, a first pressurization forming stage, an exhaust stage, a drainage stage, a high-pressure forming stage, a stay stage and a quick return stage, wherein the low-pressure forming speed is 240mm/s, the first pressurization forming speed is 30-50mm/s, the high-pressure forming speed is 10-30mm/s, the return speed is 200mm/s, the 7 stages are controlled in a programmed mode, and the time for completing one period is 15-30 seconds.
Furthermore, the intelligent stacking in the step 3) adopts gantry type stacking and comprises a stacking support, a stacking lifting table and a plurality of groups of stacking grippers, wherein the stacking grippers adopt cylinders to provide holding force, anti-slip rubber is embedded in the inner sides of the stacking grippers to increase friction force, certain protection is formed on coal briquettes, in addition, in order to ensure the safety of the coal briquettes in the moving process, a pair of protection auxiliary hands are arranged on the outer sides of the grippers, and when the coal briquettes are gripped, the protection auxiliary hands are closed, so that the coal briquettes in the moving process are prevented from falling.
Further, the moving speed of the intelligent gripper in the intelligent stacking in the step 3) comprises an up-down moving speed and a horizontal moving speed, wherein the up-down moving speed is 500mm/s, the in-place speed of the stacked coal blocks is 20-50mm/s, the horizontal moving speed is 500mm/s, and the moving speed of the stacking gripper carrying the coal blocks is 50-150mm/s when starting and stopping.
Furthermore, the intelligent stacking device in the step 3) is also provided with a movable side plate mechanism, so that the stacking precision and the stability of a coal wall when the coal charging car moves are ensured, and the stacking precision is within +/-3 mm.
The invention has the beneficial effects that:
compared with the prior art, the invention has remarkable environmental, social and economic benefits of energy conservation, emission reduction and yield increase, and specifically comprises the following steps:
1) under the condition that the quality of coke is not reduced, the using amount of non-caking coal is increased, 15% -25% of non-caking coal is increased on the basis of the existing coal blending ratio, precious main coking coal resources are saved, the coking coal blending cost is reduced, and the coal blending cost per ton is reduced by 50-80 yuan.
2) When the same coal blending is adopted for coking, the strength of the produced coke after reaction is improved by 1-3%, the reactivity of the coke is reduced by 1-3%, and the quality of the coke is improved; meanwhile, the coke powder is reduced by 3-5%, and the coke yield is increased.
3) In a coking device with the same scale, the invention increases the yield of coke by 10-30%, increases the yield of coke oven gas by 10-30%, increases the chemical production by 10-30%, reduces coking wastewater by 30-50%, reduces coke powder with the particle size of less than 10mm by 3-5%, reduces the heat consumption of coke per ton by 8-15%, and has the functions of remarkably increasing the yield, reducing the discharge of wastewater and waste gas, improving the product quality and reducing the energy consumption.
4) The invention solves the environmental problems of smoke and large dust in the existing coking coal charging process, avoids the problems of corner falling and cake collapse of a tamping coal charging wall, increases the production stability, realizes the intelligent and modular production of coking coal charging and reduces the labor intensity of workers.
Detailed Description
For a better illustration of the invention, the invention is further illustrated with reference to the following examples:
example 1
An intelligent forming and stacking coking production method comprises the specific processes of coal sample pretreatment, forming, stacking, coal charging, coking, coke pushing and coke quenching, wherein the forming and stacking processes are intelligent forming and intelligent stacking, and the specific steps are as follows:
1) pretreatment: crushing a coal sample to be less than 3mm, uniformly configuring according to water, ash content, volatile matter, sulfur content, bonding index, colloidal layer thickness, expansion degree and granularity parameters in coal in proportion, conveying the coal sample to a coal bunker for later use, optimally increasing the usage amount of non-caking coal in the pretreated coal sample, and increasing the usage amount by 15%, wherein the granularity of the pretreated coal sample is less than 3mm and accounts for more than 85%, and the standard requirement in the prior art is more than 90%, compared with the prior art, the technical scheme has lower requirement, the preparation process of raw material coal is simple, the prepared coal sample obtained by pretreatment has the water content of 9-15%, the ash content of 8-12%, the volatile matter of 22-32%, the sulfur content of 0.8-1.2%, the bonding index of 55-65 and the colloidal layer thickness of 8-14;
2) intelligent forming: the method specifically comprises the steps of raw material metering feeding, homogenizing, mold filling, molding and demolding, wherein a programmed control system is adopted in 5 processes to form a set of intelligent control system, wherein the molding process comprises a low-pressure molding stage, a first pressurization molding stage, an exhaust stage, a drainage stage, a high-pressure molding stage, a stay stage and a quick return stage, the low-pressure molding speed is 120mm/s, the first pressurization molding speed is 30mm/s, the high-pressure molding speed is 10mm/s, the return speed is 120mm/s, 7 stages are programmed and controlled, the time for completing one period is 28 seconds, the molding pressure is 40MPa, the compression ratio of raw material coal is 1.6, the moisture content of the molded coal is reduced by 15.1%, and the density is 1.1t/m3The compression strength is 2.0MPa, and the breaking strength is 1.5 MPa; length of molded coal: width: height is 3000mm respectively: 600 mm: 1000mm, the size precision of the molded coal block is within +/-2 mm.
3) Intelligent stacking: after the coal blocks come out of the coal block manufacturing special equipment, the coal blocks are placed on a coal block conveying bed through a coal pushing device, the coal blocks are placed on a coal block special supporting plate through a pre-stacking system, intelligent stacking adopts gantry stacking and consists of a stacking support, a stacking lifting table and 8 stacking grippers, wherein the stacking grippers adopt air cylinders to provide holding force, anti-slip rubber is inlaid in the stacking supports to increase friction force and form certain protection for the coal blocks, in addition, in order to ensure the safety of the coal blocks in the moving process, a pair of protection auxiliary hands are arranged on the outer sides of the stacking grippers, when the coal blocks are gripped, the protection auxiliary hands are closed to avoid the coal blocks from falling off in the moving process, the moving speed of the stacking grippers comprises an up-and-down moving speed and a horizontal moving speed, the up-down moving speed is 150mm/s, the stacking coal blocks are in-place speed is 20mm/s, the horizontal moving speed is 160mm/s, and the stacking grippers carry the coal blocks to start and stop, piling to form the length of the coal wall: width: height is 21000 mm: 3600 mm: 10000mm, the stacking precision is less than 3mm, the intelligent stacking device is provided with a movable side plate mechanism, the stacking precision and the stability of a coal wall when the coal charging car moves are ensured, and the stacking precision is less than 3 mm;
4) coal charging: the coal piled into the coal wall is integrally loaded into a coke oven through a coal charging car for coking for 19 hours, coal gas generated in the coking process is recycled or generates electricity, and red coke is removed for coke quenching;
5) quenching coke: and pushing the red coke into a coke quenching car, and screening and storing the red coke after quenching to obtain coke products with different grades.
Example 2
An intelligent forming stacking coking production method comprises the specific processes of coal sample pretreatment, forming, stacking, coal charging and coke quenching, wherein the forming and stacking process comprises intelligent forming and intelligent stacking, and the specific steps are as follows:
1) pretreatment: the coal is crushed to be less than 3mm, the coal is uniformly prepared according to the water content, ash content, volatile matter, sulfur content, bonding index, colloidal layer thickness, expansion degree and granularity parameters in the coal and is conveyed to a coal bunker for standby, the usage amount of non-caking coal can be increased by a pretreated coal sample, the usage amount is increased by 25 percent, the granularity of the pretreated coal sample is less than 3mm and accounts for more than 85 percent, the standard requirement in the prior art is more than 90 percent, compared with the prior art, the technical scheme has lower requirement, the preparation process of raw material coal is simple, the prepared coal sample obtained by pretreatment has the water content of 9-15 percent, the ash content of 8-12 percent, the volatile matter of 22-32 percent, the sulfur content of 0.8-1.2 percent, the bonding index of 55-65 and the colloidal layer thickness of 8-14 percent;
2) intelligent forming: the method specifically comprises the steps of raw material metering feeding, homogenizing, mold filling, molding and demolding, wherein a programmed control system is adopted in 5 processes to form a set of intelligent control system, wherein the molding process comprises a low-pressure molding stage, a first pressurization molding stage, an exhaust stage, a drainage stage, a high-pressure molding stage, a stay stage and a quick stage, the low-pressure molding speed is 220mm/s, the first pressurization molding speed is 40mm/s, the high-pressure molding speed is 25mm/s, the return speed is 200mm/s, 7 stages are programmed and controlled, the time for completing one period is 30 seconds, the molding pressure is 80MPa, the compression ratio of raw material coal is 1.9, the moisture content of the molded coal is reduced by 30%, and the density is 1.4t/m3The compressive strength is 3.5MPa, and the flexural strength is 2.5 MPa; the size of the formed coal briquette is long: width: the height is 2000 mm: 450 mm: 800mm, the size precision of the molded coal block is within +/-2 mm;
3) intelligent stacking: after the coal blocks come out of the coal block making special equipment, the coal blocks are placed on a coal block conveying bed through a coal pushing device, the coal blocks are placed on a coal block special supporting plate through a pre-stacking system, intelligent stacking adopts gantry stacking and consists of a stacking support, a stacking lifting table and 3 stacking grippers, wherein the stacking grippers adopt air cylinders to provide holding force, anti-slip rubber is inlaid in the stacking supports to increase friction force and form certain protection for the coal blocks, in addition, in order to ensure the safety of the coal blocks in the moving process, a pair of protection auxiliary hands are arranged on the outer sides of the grippers, when the coal blocks are gripped, the protection auxiliary hands are closed to avoid the coal blocks from falling off in the moving process, the moving speed of the intelligent stacking grippers comprises an up-down moving speed and a horizontal moving speed, the up-down moving speed is 300mm/s, the stacking coal blocks are in-place moving speed is 45mm/s, the horizontal moving speed is 300mm/s, and the moving speed of the stacking grippers when the coal blocks are, piling to form the length of the coal wall: width: height 18000 mm: 900 mm: 2400mm, the intelligent stacking device is provided with a movable side plate mechanism, so that the stacking precision and the stability of a coal wall when the coal charging car moves are ensured, and the stacking precision is less than 3 mm;
4) coal charging: the coal piled into the coal wall is integrally loaded into a coke oven through a coal charging car for coking for 60 hours, coal gas generated in the coking process is recycled or generates electricity, and red coke is removed for coke quenching;
5) quenching coke: and pushing the red coke into a coke quenching car, and screening and storing the red coke after quenching to obtain coke products with different grades.
Example 3
An intelligent forming stacking coking production method comprises the specific processes of coal sample pretreatment, forming, stacking, coal charging and coke quenching, wherein the forming and stacking process comprises intelligent forming and intelligent stacking, and the specific steps are as follows:
1) pretreatment: the coal is crushed to be less than 3mm, the coal is uniformly prepared according to the water content, ash content, volatile matter, sulfur content, bonding index, colloidal layer thickness, expansion degree and granularity parameters in the coal and is conveyed to a coal bunker for standby, the usage amount of non-caking coal can be increased by 20% by a pretreated coal sample, the granularity of the pretreated coal sample is less than 3mm and accounts for more than 85%, the standard requirement in the prior art is more than 90%, compared with the prior art, the technical scheme has lower requirement, the preparation process of raw material coal is simple, the prepared coal sample obtained by pretreatment has the water content of 9-15%, the ash content of 8-12%, the volatile matter content of 22-32%, the sulfur content of 0.8-1.2%, the bonding index of 55-65 and the colloidal layer thickness of 8-14%;
2) intelligent forming: the method specifically comprises the steps of raw material metering feeding, homogenizing, mold filling, molding and demolding, wherein a programmed control system is adopted in 5 processes to form an intelligent control system for control, wherein the molding pressure is 80MPa, the compression ratio of raw material coal is 1.7, the molding process comprises a low-pressure molding stage, a first pressurization molding stage, an exhaust stage, a drainage stage, a high-pressure molding stage, a retention stage and 7 rapid return stages, the low-pressure molding speed is 160mm/s, the first pressurization molding speed is 38mm/s, the high-pressure molding speed is 25mm/s, the return speed is 180mm/s, the 7 stages are programmed and controlled, the time for completing one cycle is 19 seconds, the moisture content of a molded coal briquette is reduced by 18%, and the density is 1.25t/m3The compression strength is 2.7MPa, the breaking strength is 1.8MPa, and the length of the molded coal block is as follows: width: the height is 500mm respectively: 400 mm: 400mm, the size precision of the molded coal block is within +/-2 mm;
3) intelligent stacking: after the coal briquette comes out from the special coal briquette making equipment, the coal briquette is placed on a coal briquette conveying bed through a coal pushing device, the coal briquette is placed on a special coal briquette supporting plate through a pre-stacking system, intelligent stacking adopts gantry stacking, and the stacking device consists of a stacking support, a stacking lifting table and 6 stacking grippers, wherein the stacking grippers adopt cylinders to provide clamping force, anti-skid rubber is inlaid on the inner sides of the stacking grippers, friction force is increased, certain protection is formed on the coal briquette, in addition, in order to ensure the safety of the coal briquette in the moving process, a pair of protection auxiliary handles are arranged on the outer sides of the grippers, and when the coal briquette is gripped, the protection auxiliary handles are closed, so that the coal briquette in the moving process is prevented from falling. The moving speed of the intelligent stacking gripper comprises an up-down moving speed and a horizontal moving speed, the up-down moving speed is 490mm/s, the coal stacking arrival speed is 48mm/s, the horizontal moving speed is 490mm/s, and the moving speed of the stacking gripper is 80mm/s when the stacking gripper carries the coal to start and stop. Piling to form the length of the coal wall: width: height 18000 mm: 400 mm: 7000mm, the intelligent stacking device is provided with a movable side plate mechanism, so that the stacking precision and the stability of a coal wall when the coal charging car moves are ensured, and the stacking precision is less than 3 mm;
4) coal charging: the coal piled into the coal wall is integrally loaded into a coke oven through a coal charging car for coking for 19 hours, coal gas generated in the coking process is recycled or generates electricity, and red coke is removed for coke quenching;
5) quenching coke: and pushing the red coke into a coke quenching car, and screening and storing the red coke after quenching to obtain coke products with different grades.
Example 4
An intelligent forming and stacking coking production method comprises the specific processes of coal sample pretreatment, forming, stacking, coal charging and coke quenching, wherein the forming and stacking process comprises intelligent forming and intelligent stacking, and the specific steps are as follows:
1) pretreatment: crushing coal to be less than 3mm, uniformly configuring according to water, ash content, volatile matter, sulfur content, bonding index, colloidal layer thickness, expansion degree and granularity parameters in the coal in proportion, conveying the coal to a coal bunker for later use, wherein the usage amount of non-caking coal can be increased by 20% in a pretreated coal sample, the granularity of the pretreated coal sample is less than 3mm and accounts for more than 85%, the standard requirement in the prior art is more than 90%, compared with the prior art, the technical scheme has lower requirement, the preparation process of raw material coal is simple, the prepared coal sample obtained by pretreatment has water content of 9-15%, ash content of 8-12%, volatile matter of 22-32%, sulfur content of 0.8-1.2%, bonding index of 55-65 and colloidal layer thickness of 8-14;
2) intelligent forming: the method specifically comprises the steps of raw material metering feeding, homogenizing, mold filling, molding and demolding, wherein a programmed control system is adopted in 5 processes to form a set of intelligent control system, wherein the molding pressure in molding is 120MPa, the compression ratio of raw material coal is 1.8, the molding process comprises a low-pressure molding stage, a first pressurization molding stage, an exhaust stage, a drainage stage, a high-pressure molding stage, a stay stage and a quick return stage, the low-pressure molding speed is 180mm/s, the first pressurization molding speed is 45mm/s, the high-pressure molding speed is 25mm/s, the return speed is 180mm/s, the 7 stages are programmed and controlled, the time for completing one cycle is 22 seconds, the moisture content of a molded coal block is reduced by 28%, and the density is 1.25t/m3The compression strength is 2.8MPa, the breaking strength is 2.2MPa, and the size of the formed coal briquette is long: width: the height is 800mm respectively: 500 mm: 620mm, the size precision of the molded coal block is within +/-2 mm;
3) intelligent stacking: after the coal blocks come out of the coal block manufacturing special equipment, the coal blocks are placed on a coal block conveying bed through a coal pushing device, the coal blocks are placed on a coal block special supporting plate through a pre-stacking system, intelligent stacking adopts gantry type stacking, and the stacking type coal block stacking comprises a stacking support, a stacking lifting table and a stacking gripper which is composed of a stacking support and a stacking lifting table 2, wherein the stacking gripper adopts an air cylinder to provide a holding force, and is embedded with anti-slip rubber on the inner side of the stacking support to increase friction force and form certain protection for the coal blocks, in addition, in order to ensure the safety of the coal blocks in the moving process, a pair of protection auxiliary handles are arranged on the outer side of the gripper, when the coal blocks are gripped, the protection auxiliary handles are closed to avoid the coal blocks from falling in the moving process, the moving speed of the intelligent stacking gripper comprises up-down movement and horizontal movement, the up-down moving speed is 400mm/s, the in-place speed of the stacking coal blocks is, piling to form the length of the coal wall: width: height 13600 mm: 3000 mm: 2480mm, the intelligent stacking device is provided with a movable side plate mechanism to ensure the stacking precision and the stability of a coal wall when the coal charging car moves, and the stacking precision is less than 3 mm;
4) coal charging: the coal piled into the coal wall is integrally loaded into a coke oven through a coal charging car for coking for 76 hours, coal gas generated in the coking process is recycled or used for generating electricity, and red coke is used for quenching coke;
5) quenching coke: and pushing the red coke into a coke quenching car, and screening and storing the red coke after quenching to obtain coke products with different grades.
Example 5
An intelligent forming, stacking and coking production method comprises the steps of coal sample pretreatment, forming, stacking, coal charging and coke quenching, wherein the forming and stacking process comprises intelligent forming and intelligent stacking, and the method comprises the following specific steps:
1) pretreatment: the coal is crushed to be less than 3mm, the coal is uniformly prepared according to the water content, ash content, volatile matter, sulfur content, bonding index, colloidal layer thickness, expansion degree and granularity parameters in the coal and is conveyed to a coal bunker for standby, the usage amount of non-caking coal can be increased by a pretreated coal sample, the usage amount is increased by 18 percent, the granularity of the pretreated coal sample is less than 3mm and accounts for more than 85 percent, the standard requirement in the prior art is more than 90 percent, compared with the prior art, the technical scheme has lower requirement, the preparation process of raw material coal is simple, the prepared coal sample obtained by pretreatment has the water content of 9-15 percent, the ash content of 8-12 percent, the volatile matter of 22-32 percent, the sulfur content of 0.8-1.2 percent, the bonding index of 55-65 and the colloidal layer thickness of 8-14 percent;
2) intelligent forming: the method specifically comprises the steps of raw material metering feeding, homogenization, mold filling, molding and demolding, wherein a programmed control system is adopted in 5 processes to form a set of intelligent control system, wherein the molding pressure in molding is 65MPa, the compression ratio of raw material coal is 1.7, the molding process comprises a low-pressure molding stage, a first pressure molding stage, an exhaust stage, a drainage stage, a high-pressure molding stage, a retention stage and a quick return stage, the low-pressure molding speed is 220mm/s, the first pressure molding speed is 42mm/s, the high-pressure molding speed is 23mm/s, the return speed is 160mm/s, the 7 stages are programmed and controlled, the time for completing one cycle is 26 seconds, the moisture content of a molded coal briquette is reduced by 22.5 percent in molding, and the density is 1.26t/m3The compression strength is 3.1MPa, the breaking strength is 1.8MPa, and the length of the molded coal block is as follows: width: the height is 800mm respectively: 500 mm: 520mm, and the size precision of the molded coal block is within +/-2 mm;
3) intelligent stacking: after the coal blocks come out of the coal block manufacturing special equipment, the coal blocks are placed on a coal block conveying bed through a coal pushing device, the coal blocks are placed on a coal block special supporting plate through a pre-stacking system, intelligent stacking adopts gantry stacking and consists of a stacking bracket, a stacking lifting table and a stacking gripper 6, wherein the stacking gripper adopts an air cylinder to provide holding force, antiskid rubber is inlaid in the stacking bracket, friction force is increased, and certain protection is formed on the coal blocks, in addition, in order to ensure the safety of the coal blocks in the moving process, a pair of protection auxiliary handles are arranged on the outer side of the gripper, when the coal blocks are gripped, the protection auxiliary handles are closed to avoid the coal blocks from falling in the moving process, the moving speed of the intelligent stacking gripper comprises up-down movement and horizontal movement, the up-down movement speed is 320mm/s, the coal block in-place movement speed is 23mm/s, the horizontal movement speed is 260mm/s, the moving speed of the stacking gripper carrying the coal blocks when starting, piling to form the length of the coal wall: width: the heights are 19200 mm: 500 mm: 5200mm, the intelligent stacking device is provided with a movable side plate mechanism to ensure the stacking precision and the stability of a coal wall when the coal charging car moves, and the stacking precision is less than 3 mm;
4) coal charging: the coal piled into the coal wall is integrally loaded into a coke oven through a coal charging car for coking for 32 hours, coal gas generated in the coking process is recycled or used for generating electricity, and red coke is used for quenching the coke;
5) quenching coke: and pushing the red coke into a coke quenching car, and screening and storing the red coke after quenching to obtain coke products with different grades.
The foregoing examples are to be understood as merely illustrative of the present invention in more detail and not restrictive thereof, and although some of the materials and acts used in the practice of the present invention are known in the art, the invention is described herein in as much detail as possible, unless otherwise specified.
Claims (6)
1. An intelligent forming, stacking and coking production method comprises the steps of coal sample pretreatment, forming, stacking, coal charging and coke quenching, and is characterized in that: the forming and stacking process is intelligent, a fully automatic operation process is adopted, and the method comprises the following specific steps:
1) pretreatment: crushing raw coal to be less than 3mm, uniformly preparing coal samples according to water, ash content, volatile matters, sulfur content, bonding index, colloid layer thickness, swelling degree and granularity parameters in proportion, and conveying the coal samples to a coal bunker for later use;
2) intelligent forming: the forming process specifically comprises the steps of raw material metering feeding, homogenizing, mold filling, forming and demolding to form an intelligent control system, wherein the length of the formed coal briquette is as follows: width: the height is 500-3000 mm respectively: 400-600 mm: 400-1000 mm, the size precision of the formed coal block is within +/-2 mm, the moisture of the formed coal block is reduced by 15-30%, and the density is 1.1-1.4t/m3Compressive strength of 2.0-3.5 MPa, and fracture resistanceThe strength is 1.5-2.5 MPa;
3) intelligent stacking: after the coal cinder comes out from system coal cinder professional equipment, place the coal cinder on the coal cinder conveying bed via the coal pusher, through intelligent pile up neatly device, sign indicating number system in advance with the coal cinder pendulum on the special layer board of coal cinder, the pile up neatly becomes the length of coal wall: width: the height is 12000-25000 mm respectively: 400-3400 mm: 1000-10000 mm; the intelligent stacking device is provided with a movable side plate mechanism, so that the stacking precision and the stability of a coal wall when the coal charging car moves are ensured, and the stacking precision is less than 3 mm;
4) coal charging: the coal piled into the coal wall is integrally loaded into a coke oven through a coal charging car, the coking time is 18-80 hours, coal gas generated in the coking process is recycled or used for power generation, and red coke is used for coke quenching;
5) quenching coke: and pushing the red coke into a coke quenching car, and screening and storing the red coke after quenching to obtain coke products with different grades.
2. The intelligent forming and stacking coking production method as claimed in claim 1, wherein: the usage amount of the non-caking coal is increased by 15-25% in the coal sample pretreated in the step 1), the water content of the pretreated coal sample is 9-15%, the ash content is 8-12%, the volatile components are 22-32%, the sulfur content is 0.8-1.2%, the caking index is 55-65, and the thickness of the gelatinous layer is 8-14.
3. The intelligent forming, stacking and coking production method as claimed in claim 1, wherein the forming pressure in the intelligent forming in the step 2) is between 40 and 120MPa, and the compression ratio of the raw material coal is between 1.6 and 1.9.
4. The intelligent forming and stacking coking production method as claimed in claim 1, wherein: the molding in the step 2) comprises a low-pressure molding stage, a first pressurization molding stage, an exhaust stage, a drainage stage, a high-pressure molding stage, a retention stage and a quick return stage, wherein the low-pressure molding speed is 240mm/s, the first pressurization molding speed is 30-50mm/s, the high-pressure molding speed is 10-30mm/s, the return speed is 200mm/s, the 7 stages are controlled in a programmed mode, and the time for completing one period is 15-30 seconds.
5. The intelligent forming and stacking coking production method as claimed in claim 1, wherein: the intelligent stacking device in the step 3) adopts gantry type stacking and comprises a stacking support, a stacking lifting table and a plurality of groups of stacking grippers, wherein the stacking grippers adopt cylinders to provide holding force, antiskid rubber is embedded in the inner sides of the stacking grippers to increase friction force and protect coal blocks, a pair of protection auxiliary hands are arranged on the outer sides of the grippers, and when the coal blocks are gripped, the protection auxiliary hands are closed to avoid the coal blocks from falling off in the moving process.
6. The intelligent forming and stacking coking production method as claimed in claim 5, wherein the method comprises the following steps: the moving speed of the stacking gripper in the step 3) comprises an up-down moving speed and a horizontal moving speed, the up-down moving speed is 150 plus 500mm/s, the in-place speed of the stacked coal blocks is 20-50mm/s, the horizontal moving speed is 150 plus 500mm/s, and the moving speed of the stacking gripper is 50-150mm/s when the stacking gripper carries the coal blocks to start and stop.
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