CN103059889B - Microwave pretreatment desulfurization coking method and device - Google Patents
Microwave pretreatment desulfurization coking method and device Download PDFInfo
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- CN103059889B CN103059889B CN201310024082.9A CN201310024082A CN103059889B CN 103059889 B CN103059889 B CN 103059889B CN 201310024082 A CN201310024082 A CN 201310024082A CN 103059889 B CN103059889 B CN 103059889B
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Abstract
The invention discloses a microwave pretreatment desulfurization coking device, and particularly provides a device for coking coal. The device comprises a coal blending process, a coal charging process and a coking process; and the method further comprises a microwave pretreatment process between the coal blending process and the coal charging process. The microwave pretreatment process adopts a microwave pretreatment device with the microwave frequency ranged from 300MHz to 300GHz for irradiating, dewatering and desulfurizing the blended coal; and the temperature of the pretreated coal sample is controlled between 150 and 250 DEG C; and then coal is prepared to be charged into a stove and coked. The microwave pretreatment device comprises a microwave reaction chamber body, a connecting device, a conveyor, an exhaust duct and a detection control system, wherein the connecting device, the conveyor, the exhaust duct and the detection control system are arranged among the microwave reaction chamber body, a coke stove coal tower and a coal charging trolley or a material bin. The device is simple; after being quickly preheated, dewatered and desulfurized, the blended coal can be coked so as to improve the bulk density, shorten the coking time and promote the yield of a single furnace as well as the coal quality; and clean and effective utilization of energy can be realized.
Description
Technical field
The present invention relates to a kind of device of carbonization of coal, particularly a kind of Microwave Pretreatment desulfurization coking device.
Background technology
Coking also claims high temperature carbonization, refers to that coking coal is heated to 900 DEG C ~ 1100 DEG C under the condition of isolated air, carries out thermolysis, generates the process of the products such as coke, coal tar, crude benzol, coal gas.Coal charge adds after stove, and temperature rises to 200 DEG C, the free water in coal and discharging in conjunction with water; 350 DEG C ~ 450 DEG C time, coal starts to soften, and generation gas and a large amount of plastic masss occur to decompose; 450 DEG C ~ 550 DEG C time, semicoke is decomposed, solidify to form to plastic mass; 550 DEG C ~ 750 DEG C time, semicoke divides and parses a large amount of gas, and Semicoke Contraction cracks; More than 750 DEG C, semicoke further decomposes generation gas, and constantly polycondensation, constantly increases aromatic carbon net simultaneously, and structural unit is arranged ordering and further strengthened, and last semicoke transforms into coke.
Product coke is important blast furnace ironmaking raw material, also can be for production fields such as gas making, casting, calcium carbide and non-ferrous metal metallurgies, the coke of most countries more than 90% for blast furnace ironmaking; Coal tar can also be used through separating-purifying, is high added value product; Its quality of coke-oven gas accounts for 16% ~ 20% of shove charge coal, is the important gas fuel in Steel Complex, and its main component is hydrogen and methane, separable go out for the hydrogen of chemosynthesis with replace the methane of Sweet natural gas.
In current coking technology, coal blending directly joins coking in coke oven, and thermal technology and the stove brick life-span of moisture in coal to coke oven can produce detrimentally affect, and can produce a large amount of remained ammonias; The evaporation of moisture, the rising of coal temperature consume a large amount of heats, increase coking time, have affected single oven coke output; Simultaneously a large amount of existence of the element such as S, P in coal, also can affect coke quality.
Summary of the invention
The defect and the deficiency that exist for existing coking technology, the object of the invention is to provide a kind of Microwave Pretreatment desulfurization coking device, solves the initial temperature, the dump density that in present process of coking, exist, the problem of coking time.
For achieving the above object, the present invention takes following technical scheme: this coking process comprises method and device;
A kind of Microwave Pretreatment coking process, comprise coal blending operation, the operation of coalingging, coking process, also be included in coal blending operation and coaling the Microwave Pretreatment operation of setting up between operation, described Microwave Pretreatment operation adopts Microwave Pretreatment device, microwave frequency, at 300MHz ~ 300GHz, is carried out irradiation, dehydration, desulfurization to coal blending, and pretreated coal sample temperature is controlled at 150 DEG C ~ 250 DEG C, prepare shove charge, enter coking process.
Described Microwave Pretreatment device comprises: coal tower, Microwave Pretreatment device, coal charger or feed bin, feeding machine, flow control valve, hopper, transfer roller, microwave waveguide, Temperature Detector, discharge bucket, gas exhaust duct, microwave reaction chamber body of wall, shell, microwave reaction chamber and material distributing machine; Coal tower enters Microwave Pretreatment device by first flow variable valve, feeding machine and hopper, Microwave Pretreatment device enters coal charger or feed bin by second adjustable valve, there is gas exhaust duct upper end at Microwave Pretreatment device, hopper is positioned at the top of Microwave Pretreatment device transfer roller, has material distributing machine at the front end of hopper position; In Microwave Pretreatment device, have microwave reaction chamber body of wall, microwave reaction chamber body of wall forms microwave reaction chamber, and in microwave reaction chamber, body of wall has shell outward, has downward discharge bucket at the front end of shell, on the body of wall of microwave reaction chamber, has microwave waveguide and Temperature Detector.
Beneficial effect, owing to having adopted such scheme, coupling device, transfer roller, gas exhaust duct and detection Controlling System between microwave reaction cavity, microwave reaction cavity and coke-oven coal tower and coal charger or feed bin.Microwave reaction cavity 15 is tunnel like, upper and lower both sides microwave exposure, and microwave waveguide is symmetrical or is evenly interspersed; Occasionally hot resistance, infrared thermometer of thermoelectricity all installed in microwave reaction cavity middle part, discharge port top, and multiple spot detects temperature of charge in real time.Hopper is connected with coal tower discharge port, and hopper can change by controlling coal blending flow the load of transfer roller, and installing inner material distributing machine can be layered on coal blending on the belt of transfer roller uniformly; Discharge bucket is connected with the feed bin that has the coal charger of heat insulation function or have a heat insulation function, prepares shove charge coking.Transfer roller can, by controlling rotating speed, change thickness of coal seam and the residence time of coal blending in microwave reaction cavity, and transfer roller can operate continuously or intermittently.Air-bleed system is installed on gas exhaust duct, can in time the water vapour in cavity and other gas be derived, be beneficial to mass transfer, the heat transfer of coal blending.Detect Controlling System and comprise temperature control module, transfer roller module, exhaust module, mass flow module, each module can automatization control also can manual shift.Between the cavity and shell of Microwave Pretreatment device, hopper, discharge bucket be all filled with thermal insulation and antiradiation material.Microwave Pretreatment device can single or multiplely be connected with coal tower and coal charger, realize modularization running is installed, and device angle of inclination is adjustable.Solved the initial temperature, the dump density that in present process of coking, exist, the problem of coking time, reaches object of the present invention.
Advantage:
1, the present invention is by setting up Microwave Pretreatment operation, can carry out Quick Pretreatment to coal blending, pretreated coal blending temperature is controlled at 150 DEG C ~ 250 DEG C, and the temperature of coal blending is effectively raise and can not have a negative impact to the coking behavior of coal in this temperature range; Microwave exposure can act on sulfur content in coal component, reduces coke sulphur content; Quick Pretreatment can be deviate from large quantity of moisture in coal, reduces heat consumption, reduces the treatment capacity such as remained ammonia, extends coke oven work-ing life.
2, the present invention is by setting up Microwave Pretreatment operation, coal blending is carried out rapidly pre-warming, dewatered, falls coking after sulphuring treatment, can shorten coking time, improve bulk density, promote single furnace output and coke quality, be conducive to the application of low-quality coal in coal blending, thereby the cleaning that realizes the energy effectively utilizes simultaneously.
3, Microwave Pretreatment device of the present invention adopts tunnel like, and microwave waveguide is evenly installed up and down, can ensure the abundance of the residence time and the intensity of irradiation and homogeneity.The air-bleed system of device gas exhaust duct, can derive the water vapour in cavity and other gas in time, is beneficial to mass transfer, the heat transfer of coal blending.
4, can automatically control also can manual shift for Microwave Pretreatment device of the present invention, convenient operation; Install airtight continuous operation, production efficiency is high, and dust discharge is few; Apparatus structure is simple, normal pressure operation, and cost is low, is applicable to the modularization installations such as single or multiple; Device input and output material position and wall part are filled with adiabatic antiradiation material, safe and reliable.
Brief description of the drawings
Fig. 1 is Microwave Pretreatment production line side-looking structure iron.
Fig. 2 is Microwave Pretreatment production line plan structure figure.
Fig. 3 is Microwave Pretreatment device sectional structure chart.
In figure, 1, coal tower; 2, Microwave Pretreatment device; 3, coal charger or feed bin; 4, feeding machine; 5, flow control valve; 5-1, second adjustable valve; 6, hopper; 7, transfer roller; 8, coal seam; 9, microwave waveguide; 10, Temperature Detector; 11, discharge bucket; 12, gas exhaust duct; 13, microwave reaction chamber body of wall; 14, shell; 15, microwave reaction chamber; 16, material distributing machine.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described in detail.
Embodiment 1: this coking process comprises method and device;
A kind of Microwave Pretreatment coking process, comprise coal blending operation, the operation of coalingging, coking process, also be included in coal blending operation and coaling the Microwave Pretreatment operation of setting up between operation, described Microwave Pretreatment operation adopts Microwave Pretreatment device, microwave frequency, at 300MHz ~ 300GHz, is carried out irradiation, dehydration, desulfurization to coal blending, and pretreated coal sample temperature is controlled at 150 DEG C ~ 250 DEG C, prepare shove charge, enter coking process.
The device of realizing coking process comprises: coal tower 1, Microwave Pretreatment device 2, coal charger or feed bin 3, feeding machine 4, flow control valve 5, hopper 6, transfer roller 7, microwave waveguide 9, Temperature Detector 10, discharge bucket 11, gas exhaust duct 12, microwave reaction chamber body of wall 13, shell 14, microwave reaction chamber 15 and material distributing machine 16; Coal tower 1 enters Microwave Pretreatment device 2 by first flow variable valve 5, feeding machine 4 and hopper 6, Microwave Pretreatment device 2 enters coal charger or feed bin 3 by second adjustable valve 5-1, there is gas exhaust duct 12 in the upper end of Microwave Pretreatment device 2, hopper 6 is positioned at the top of Microwave Pretreatment device 2 transfer rollers 7, has material distributing machine 16 at the front end of hopper 6 positions; In Microwave Pretreatment device 2, there is microwave reaction chamber body of wall 13, microwave reaction chamber body of wall 13 forms microwave reaction chamber 15, outside microwave reaction chamber body of wall 13, there is shell 14, have downward discharge bucket 11 at the front end of shell 14, on microwave reaction chamber body of wall 13, have microwave waveguide 9 and Temperature Detector 10.
Coupling device, transfer roller, gas exhaust duct and detection Controlling System between microwave reaction cavity, microwave reaction cavity and coke-oven coal tower and coal charger or feed bin.
Described microwave reaction cavity 15 is tunnel like, upper and lower both sides microwave exposure, and microwave waveguide is symmetrical or is evenly interspersed; Occasionally hot resistance, infrared thermometer of thermoelectricity all installed in microwave reaction cavity middle part, discharge port top, and multiple spot detects temperature of charge in real time.
Described hopper is connected with coal tower discharge port, and hopper can change by controlling coal blending flow the load of transfer roller, and installing inner material distributing machine can be layered on coal blending on the belt of transfer roller uniformly; Discharge bucket is connected with the feed bin that has the coal charger of heat insulation function or have a heat insulation function, prepares shove charge coking.
Described transfer roller can, by controlling rotating speed, change thickness of coal seam and the residence time of coal blending in microwave reaction cavity, and transfer roller can operate continuously or intermittently.
On described gas exhaust duct, air-bleed system is installed, can in time the water vapour in cavity and other gas be derived, be beneficial to mass transfer, the heat transfer of coal blending.
Described detection Controlling System comprises temperature control module, transfer roller module, exhaust module, mass flow module, each module can automatization control also can manual shift.
Between the cavity and shell of described Microwave Pretreatment device, hopper, discharge bucket be all filled with thermal insulation and antiradiation material.
Described Microwave Pretreatment device can single or multiplely be connected with coal tower and coal charger, realize modularization running is installed, and device angle of inclination is adjustable.
In Fig. 1, Fig. 2 and Fig. 3, open flow control valve 5, the coal blending in coal tower 1 is through feeding machine 4, enter the hopper 6 of Microwave Pretreatment device 2, coal blending is evenly distributed on transfer roller 7 by certain thickness by material distributing machine 16, the wide 1m of the long 4m of transfer roller 7, and transfer roller 7 is with certain speed operation.Under the microwave exposure that transmit at microwave waveguide 9 in coal seam 8, pass through continuously, the gas producing is derived by gas exhaust duct 12 in time, coal seam 8 out enters coal charger or feed bin 3 by discharge bucket 11 from microwave reaction chamber 15, drop temperature is controlled at 150 DEG C ~ 250 DEG C, adopt three groups of Microwave Pretreatment devices 2, be connected with coal charger or feed bin 3 as a module, prepare shove charge coking.
In present embodiment, microwave waveguide 9 is evenly distributed on the both sides up and down of microwave reaction chamber body of wall 13, can realize multiple spot, tow sides irradiation, better effects if.Temperature Detector 10 is evenly distributed on front end, centre, the rear end of microwave reaction chamber body of wall 13, and multiple spot detects the temperature in coal seam 8 in real time.For insulation with prevent microwave radiation, between microwave reaction chamber body of wall 13 and shell 14, hopper 6, discharge bucket 11 be all filled with thermal insulation and antiradiation material.The temperature Real-time Feedback that Temperature Detector 10 detects, to Controlling System, regulates transfer roller 7 travelling speed and coal seam 8 thickness in time.
Embodiment 2: the size of what present embodiment was different from embodiment one is transfer roller 7 can be adjusted according to need of production.Microwave Pretreatment device 2 can singly organize also can many groups as a module, be connected with coal tower 1 and coal charger or feed bin 3.
Above embodiment is not all the restriction to the present invention program, and any only pro forma but not substantial equivalent transformation of having done according to the present invention design all should be considered as the category of technical solution of the present invention, all in protection domain of the present invention.
Claims (1)
1. a Microwave Pretreatment desulfurization coking device, comprises transfer roller, feeding machine, flow control valve, hopper, microwave waveguide, Temperature Detector, discharge bucket, gas exhaust duct, microwave reaction chamber body of wall, microwave reaction chamber and material distributing machine; It is characterized in that: also comprise: coal tower, coal charger or feed bin, shell, coal tower enter Microwave Pretreatment device by first flow variable valve, feeding machine and hopper, Microwave Pretreatment device enters coal charger or feed bin by second adjustable valve, there is gas exhaust duct upper end at Microwave Pretreatment device, hopper is positioned at the top of Microwave Pretreatment device transfer roller, has material distributing machine at the front end of hopper position; In Microwave Pretreatment device, have microwave reaction chamber body of wall, microwave reaction chamber body of wall forms microwave reaction chamber, and in microwave reaction chamber, body of wall has shell outward, has downward discharge bucket at the front end of shell, on the body of wall of microwave reaction chamber, has microwave waveguide and Temperature Detector;
Described microwave reaction cavity (15) is tunnel like, upper and lower both sides microwave exposure, and microwave waveguide is symmetrical or is evenly interspersed; Occasionally hot resistance, infrared thermometer of thermoelectricity all installed in microwave reaction cavity middle part, discharge port top, and multiple spot detects temperature of charge in real time; Described hopper is connected with coal tower discharge port, and hopper can change by controlling coal blending flow the load of transfer roller, installs inner material distributing machine and coal blending is layered on uniformly on the belt of transfer roller; Discharge bucket is connected with the feed bin that has the coal charger of heat insulation function or have a heat insulation function; On described gas exhaust duct, air-bleed system is installed; Between the cavity and shell of described Microwave Pretreatment device, hopper, discharge bucket be all filled with thermal insulation and antiradiation material; Described Microwave Pretreatment device can single or multiplely be connected with coal tower and coal charger, realize modularization running is installed, and device angle of inclination is adjustable;
Adopt the method for Microwave Pretreatment desulfurization coking device, comprise coal blending operation, the operation of coalingging, coking process, microwave frequency is at 300MHz ~ 300GHz, pretreated coal blending temperature is controlled at 150 DEG C ~ 250 DEG C, it is characterized in that, is also included in coal blending operation and coalings the Microwave Pretreatment operation of setting up between operation, described Microwave Pretreatment operation adopts Microwave Pretreatment device, coal blending is carried out to irradiation, dehydration, desulfurization, then prepare shove charge, enter coking process.
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| CN201310024082.9A CN103059889B (en) | 2013-01-23 | 2013-01-23 | Microwave pretreatment desulfurization coking method and device |
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| CN201310024082.9A CN103059889B (en) | 2013-01-23 | 2013-01-23 | Microwave pretreatment desulfurization coking method and device |
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| CN105542899B (en) * | 2015-12-24 | 2018-08-03 | 青海盛鸿能源科技有限公司 | A kind of coal desulfurization method |
| CN107312553B (en) * | 2017-07-05 | 2023-09-19 | 南京三乐微波技术发展有限公司 | 60kg microwave coking test furnace and coking method thereof |
| CN116333771B (en) * | 2023-05-10 | 2023-10-20 | 中国矿业大学 | Device and method for improving light oil yield of oil shale |
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