CN102796539B - Continuous coaling method of coal as fired - Google Patents
Continuous coaling method of coal as fired Download PDFInfo
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- CN102796539B CN102796539B CN201210279059.XA CN201210279059A CN102796539B CN 102796539 B CN102796539 B CN 102796539B CN 201210279059 A CN201210279059 A CN 201210279059A CN 102796539 B CN102796539 B CN 102796539B
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Abstract
The invention discloses a continuous coaling method of coal as fired. The method comprises the following steps of: (1) inputting a certain amount of dehydrated coal as fired in a bunker for coal as fired; (2) turning on a blanking control valve to enable the coal as fired to enter a preheater through a coal dust distributor chamber and a blanking pipe of the bunker for coal as fired and fall into a small coal bunker after preheating, and turning off the blanking control valve to stop coaling the small coal bunker when a loading level gauge of the coal bunker detects that the small coal bunker has been coaled fully; (3) when a carbonization chamber requires to be coaled, turning on a blanking valve of the small coal bunker to fill coal as fired in the carbonization chamber; (4) when the carbonization chamber requires to stop coaling, turning off the blanking valve of the small coal bunker to stop filling coal as fired in the carbonization chamber; (5) when the blanking level gauge of the coal bunker detects that the coal as fired in the small coal bunker is insufficient, turning on the blanking control valve to coal the small coal bunker; and when the loading level gauge of the coal bunker detects that the small coal bunker has coaled fully, turning off the blanking control valve to stop coaling the small coal bunker.
Description
Technical field
The present invention relates to a kind of coal method, particularly a kind of to coal method continuously in the coking chamber of coal heat decomposition stove.
Background technology
Coal heat decomposition stove (pit kiln) in the market mostly adopts intermittent type coking, enter stove coal proportioning, to dewater, enter each processing steps such as coal, preheating, charing relatively independent, in the coking chamber to coal heat decomposition stove, carry out coal while doing industry, can not be according to the situation of the discharging of the coke of the coal carbonization in the coking chamber of coal heat decomposition stove and coal heat decomposition stove, in the coking chamber of subtend coal heat decomposition stove, controllably add continuously and inject stove coal.
This impels the inventor to think deeply to develop and a kind ofly can controllably add continuously the method for injecting stove coal.
Summary of the invention
The invention provides one and enter the continuous coal method of stove coal, the method can be according to the situation of the discharging of the coke of the coal carbonization in the coking chamber of coal heat decomposition stove and coal heat decomposition stove, controllably adds continuously and inject stove coal in the coking chamber of subtend coal heat decomposition stove.
The present invention is achieved through the following technical solutions:
One enters the continuous coal method of stove coal, and the related equipment of present method comprises into device for coal, primary heater unit, enters stove coal surge bunker, and present method performing step is:
(1), open stove cuttings conveyer and a certain amount ofly after dehydration, enter stove coal to entering to input in stove coal bunker;
(2), open blanking control valve, enter entering stove coal through coal dust distribution chamber and entering stove coal bunker tremie pipe in stove coal bunker and enter into preheater preheating, enter stove coal and after preheating, fall into coal pocket, when detecting the coal in coal pocket, level gage on coal bunker fills it up with, close blanking control valve, stop to coal pocket coal, enter stove coal and first store away in advance at coal pocket;
(3), when needs are in coking chamber when coal, open coal pocket baiting valve and inject stove coal to adding in coking chamber;
(4), in the time that needs stop coal to coking chamber, close coal pocket baiting valve, stop adding stove coal in coking chamber;
(5), in coal pocket, enter stove coal when not enough when level gage under coal bunker detects, open blanking control valve, give coal in coal pocket, fill it up with when level gage on coal bunker detects the coal in coal pocket, close blanking control valve, stop to coal pocket coal.
Preferably, the related equipment of present method also comprises industry control center, industry control center with enter the electrical connection of stove cuttings conveyer and blanking control valve, with monitoring preheating chamber thermometer with exhaust air chamber thermometer is electric is used in conjunction in temperature monitoring; Be electrically connected with the upper and lower material level meter of coal bunker, coal pocket thermometer, coal pocket baiting valve, for to entering, stove cuttings conveyer, blanking control valve, coal pocket baiting valve are directly controlled and to monitoring the monitoring of preheating chamber thermometer, exhaust air chamber thermometer, coal pocket thermometer, present method performing step is preferably:
(1), industry control center is opened stove cuttings conveyer and a certain amount ofly after dehydration, is entered stove coal to entering to input in stove coal bunker;
(2), blanking control valve is opened at industry control center, enter entering stove coal through coal dust distribution chamber and entering stove coal bunker tremie pipe in stove coal bunker and enter into preheater preheating, enter stove coal and after preheating, fall into coal pocket, in the time that industry control center receives that level gage on coal bunker detects that coal in coal pocket has been filled it up with signal, industry control closed center blanking control valve, stop to coal pocket coal, enter stove coal and first store away in advance at coal pocket;
(3), when needs are in coking chamber when coal, industry control center is opened coal pocket baiting valve and is injected stove coal to adding in coking chamber;
(4), in the time that needs stop coal to coking chamber, industry control closed center coal pocket baiting valve, stops adding stove coal in coking chamber;
(5), when industry control center receive level gage under coal bunker detect in coal pocket enter stove coal shortage signal time, blanking control valve is opened at industry control center, give coal in coal pocket, in the time that industry control center receives that level gage on coal bunker detects that coal in coal pocket has been filled it up with signal, industry control closed center blanking control valve, stops to coal pocket coal.
The present invention a kind of enter the continuous coal method of stove coal can be according to the situation of the discharging of the coke of the coal carbonization in the coking chamber of coal heat decomposition stove and coal heat decomposition stove, continuously controllably to adding and inject stove coal in the coking chamber of coal heat decomposition stove, the technical process such as coal, preheating, adjusting of entering that enter stove coal are connected in series, coal efficiency is efficient, has greatly reduced the production cost of coke.
Brief description of the drawings
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is that the involved in the present invention stove coal dewatering device that enters is assembled schematic diagram;
Fig. 2 is A place enlarged view in Fig. 1;
Fig. 3 is the involved in the present invention water trap one embodiment schematic top plan view in stove coal dewatering device that enters;
Fig. 4 is involved in the present invention another embodiment schematic top plan view of water trap in stove coal dewatering device that enters;
Fig. 5 is that the stove coal that enters in the inventive method enters the device such as coal, preheating assembling cross-sectional schematic;
Fig. 6 is C place enlarged view in Fig. 5;
Fig. 7 is the preheater sectional view in stove coal primary heater unit that enters in the inventive method;
Fig. 8 is a-a place sectional view in Fig. 6;
Fig. 9 be of the present invention enter stove coal refrigerating unit schematic diagram;
Figure 10 is b-b place sectional view in Fig. 9;
Figure 11 is electrical connection schematic diagram involved in the present invention.
Embodiment
The present invention a kind of enter the specific embodiment of the continuous coal method of stove coal mainly amount in four chapters and sections and introduce in detail at following Part III.
First part enters stove coal proportioning and preparation
A kind of coal heat decomposition stove involved in the present invention, can enter stove coal proportioning according to different, obtains the coke that grade is different.
Following steps: 1) select 5 kinds of different coals, they are respectively bottle coal, rich coal, coking coal, 1/3rd coking coal, lean coal.2) bottle coal 20%～40% wherein; Rich coal 10%～20%; Coking coal 10%～20%; / 3rd coking coal 15%～30%; Lean coal 10%～15%, first mix the fragmentation of then sieving, until reaching 5mm, crushed particles is formed into below stove coal, certainly coal heat decomposition stove of the present invention to other proportioning and granular size to enter stove coal applicable equally, do not form to coal heat decomposition stove of the present invention required enter the restriction of stove coal dust, just lifted enter stove coal proportioning and can reach more than 40% the weakly caking coal amount of allocating into by above, reduced the cost that enters stove coal and can obtain again the coke of better quality, on market, there is fine competitive power simultaneously.
Second section enters stove coal dewatering
Pit kiln in the market mostly adopts intermittent type coking, enters stove coal charge for wet coal, so power consumption has increased the cost of coking, enters dewatering of stove coal in advance to what enter this coal heat decomposition stove, plays energy-saving and cost-reducing effect.
As shown in Figure 1: the described stove coal dewatering device 1 that enters comprises dehydration support body 10, bucket elevator 11, waste gas water trap 12, coal fine filter 13, feed bin 14, fly-ash separator 15, chimney 16, enters stove coal transfer roller 17.
As Fig. 1, shown in Fig. 2: waste gas water trap 12 comprises dehydrator shell 121, hot waste gas master enters pipe 122, the main discharge tracheae 123 of dehydration waste gas, feeder 124, waste gas radiator element 125, above dehydrator shell 121, be provided with feeder 124, below the inner feeder 124 of dehydrator shell 121, be provided with at least one group of waste gas radiator element 125, the inside of waste gas radiator element 125 is provided with hot waste gas admission passage 1251, dehydration waste gas exhaust channel 1252, hot waste gas admission passage 1251 and dehydration waste gas exhaust channel 1252 enter pipe 122 with hot waste gas master respectively, the main discharge tracheae 123 of dehydration waste gas communicates, hot waste gas admission passage 1251 and dehydration waste gas exhaust channel 1252 are and are arranged above and below in the inside of waste gas radiator element 125, be beneficial to the drying and dehydrating into stove coal.
As shown in Figure 2: feeder 124 includes hopper 1241, pan feeding vibratory screening apparatus 1242, blanking channel 1243, blanking vibratory screening apparatus 1244, pan feeding vibratory screening apparatus 1242 is set in material bin 1241, scattered and be provided with multiple blanking channels 1243 by middle part in material bin 1241 belows, below blanking channel 1243, be provided with again blanking vibratory screening apparatus 1244, blanking vibratory screening apparatus 1244 belows arrange waste gas radiator element 125, and the object of design is more even in order to allow stove coal distribute above waste gas radiator element 125 like this.
As shown in Figure 2: the arrangement of three groups of 125 one-tenth upper, middle and lower of waste gas radiator element, waste gas radiator element 125 profiles are made acute triangle upward, between upper group of waste gas radiator element 125 and middle group of waste gas radiator element 125, shift to install, the waste gas radiator element 125 in group is just in time arranged between two adjacent waste gas radiator element 125 in group, in like manner, lower group of waste gas radiator element 125 is just in time arranged between two adjacent waste gas radiator element 125 in middle group, and object is drying area in order to be added to stove coal, is beneficial to into coal and disperses landing.
As Fig. 1, Fig. 2, shown in Fig. 3: coal bunker 14 is set below waste gas radiator element 125, on coal bunker 14, put and be provided with coal fine filter 13, our image is called coal dust respiratory organ, coal fine filter 13 mainly comprises filter body 131, in off-air, enter siphunculus 132, dust funnel 133, in off-air, discharge siphunculus 134, off-air is discharged siphunculus 135 outward, be provided with and in the off-air that leads to top from bottom, enter siphunculus 132 in filter body 131 periphery settings, be provided with dust funnel 133 in filter body inside, dust funnel 133 leads to coal bunker 14, above dust funnel 133, be provided with and in off-air, discharge siphunculus 134, in off-air, enter the entrance 1321 of siphunculus 132 higher than the entrance 1341 of discharging siphunculus 134 in off-air, in off-air, discharging siphunculus 134 is arranged on strainer internal head cover 137, off-air is discharged siphunculus 135 outward and is arranged on the outer top cover 138 of strainer, outside strainer internal head cover 137 and strainer, between top cover 138, be provided with steel fiber filtering net 136.
As shown in Figure 3: in off-air, enter siphunculus 132 and be arranged in filter body 131, in off-air, enter siphunculus 132 and in off-air, discharge 134 one-tenth vertical angles of siphunculus at the interior formation cyclone structure of filter body 131.
As shown in Figure 1: fly-ash separator 15 connects the main discharge tracheae 123 of dehydration waste gas, fly-ash separator 15 is existing dedusting technologies, fly-ash separator 15 comprises shell of dust remover 151, dust settling chamber 152, the main discharge tracheae 123 of dehydration waste gas leads to dust settling chamber 152, dust settling chamber 152 communicates with chimney 16 by induced draft fan 18 again, dust settling chamber 152 belows arrange flyash delivery pipe 153, described dust settling chamber 152 can be wet dedusting, also can adopt dry-method bag-type dust collecting, introduce wet dedusting herein, above the interior dust settling chamber of shell of dust remover 151, be provided with sprinkler head 154, in the water that the main discharge tracheae 123 of dehydration waste gas submerges in dust settling chamber 152.
As Fig. 1, shown in Fig. 2: hot waste gas is entered tracheae 122 and entered the waste gas admission passage 1251 of waste gas radiator element 125 inside by hot waste gas master, enter the main discharge tracheae 123 of dehydration waste gas by the dehydration waste gas exhaust channel 1252 of waste gas radiator element 125 inside again, after cleaning through the water layer in dust settling chamber 152 again, discharge from chimney 16, in hot waste gas, flyash is stayed in water layer and is regularly discharged by flyash delivery pipe 153, both played hot waste gas was purified, can reduce again hot waste gas exhaust temperature, be beneficial to air draft, protection induced draft fan 18, reach the object of clean environment protection emission, the current country of response advocates the requirement of waste gas environment protection emission.
As shown in Figure 1 and Figure 2: the hot waste gas after burning enters tracheae 122 typical temperatures at 700 DEG C～800 DEG C entering hot waste gas master, utilize the waste heat of hot waste gas self to heat waste gas radiator element 125, can lower the temperature to the hot waste gas after burning, thereby to dewatering through the stove coal that enters of waste gas radiator element 125, can allow again the water ratio of stove coal below 1%, reach the effective utilization to the hot waste gas after burning, save energy consumption.
As shown in Figure 1 and Figure 2: the discharge bucket 111 of bucket elevator 11 is arranged on material bin 1241 tops, enter stove coal transfer roller 17 and be arranged on the bottom of coal bunker 14.
As shown in figure 11: this example also comprises industry control center 90, industry control center 90 to it directly the induced draft fan 18 of electrical connection, enter stove coal transfer roller 17 and bucket elevator 11 is controlled,
This example also includes stove coal electric controller 901, entering stove coal electric controller 901 controls respectively automatically to entering stove coal transfer roller 17, induced draft fan 18 and bucket elevator 11, enter stove coal electric controller 901 and be connected with upper industry control center 90 again, realize entering the automatization of stove coal dewatering.Certainly, from electric control theory, in this example, enter stove coal transfer roller 17, induced draft fan 18 and bucket elevator 11 and controlled by industry control center 90, so set into the restriction that stove coal electric controller 901 does not form this routine protection domain herein.
This example enters stove coal dewatering Method And Principle:
1, industry control center 90 feeds stove coal electric controller 901 and spreads out of into stove coal transfer roller 17, induced draft fan 18 and bucket elevator 11 initiating signals, the stove coal that enters first proportioning being completed by bucket elevator 11 is sent in dehydrator shell 121 top material bins 1241, by pan feeding vibratory screening apparatus 1242, blanking channel 1243, blanking vibratory screening apparatus 1244, waste gas radiator element 125, finally falls into coal bunker 14;
2, hot waste gas is entered in the waste gas admission passage 1251 that tracheae 122 passes into waste gas radiator element 125 inside by hot waste gas master, enter the main discharge tracheae 123 of dehydration waste gas by the dehydration waste gas exhaust channel 1252 of waste gas radiator element 125 inside again, the water layer cleaning entering again in dust settling chamber 152 by induced draft fan 18 is discharged from chimney 16 afterwards;
3, meanwhile, enter stove coal fall into through waste gas radiator element 125 coal bunker 14 processes also can be to dehydrator shell 121 chambeies in and air in coal bunker 14 storehouses heat, heated air utilizes the heat buoyancy of self to enter in the off-air of coal fine filter 13 and enters siphunculus 132 (as Fig. 3), because the entrance 1321 that enters siphunculus 132 in off-air is higher than the entrance 1341 of discharging siphunculus 134 in off-air, hot off-air forms whirlwind from top to bottom and enters discharge siphunculus 134 in off-air, discharge siphunculus 135 outward and discharge finally by crossing steel fiber filtering net 136 and off-air, thereby the dust in off-air falls into the dust funnel 133 of below and enters coal bunker 14 because steel fiber filtering net 136 intercepts.
Part III enters stove coal and enters coal, preheating, adjusting, cooling
After dehydration enter stove coal through conveying after temperature generally can be down to normal temperature, particularly winter temperature is lower, temperature may be lower, but but it is more suitable to wish that stove coal temperature remains between 200 DEG C to 300 DEG C when coking, so need to carry out preheating before entering the coking chamber of coal heat decomposition stove to entering stove coal.
First segment enters stove coal and enters coal
As shown in Figure 5: enter that device for coal 2 mainly includes stove cuttings conveyer 21, enters stove coal bunker 22, coal dust divides to device 25, coal dust distribution chamber 26, enters stove coal bunker tremie pipe 29, coal fine filter 23.
As shown in Figure 5, enter stove cuttings conveyer 21 and adopt screw conveying structure, be arranged on into stove coal bunker 22 tops, entering stove coal bunker 22 arranges protruding coal dust in the middle of bottoms and divides to device 25, to enter stove coal bunker 22 bottoms and be divided into several coal dust distribution chambers 26, this example arranges 8 coal dust distribution chambers 26 altogether, is connected to respectively stove coal bunker tremie pipe 29, enters on stove coal bunker tremie pipe 29 blanking control valve 24 is set in coal dust distribution chamber 26 bottoms.
As Fig. 5, shown in Fig. 4, coal fine filter 23 (substantially just the same with the coal fine filter structure of introducing in this routine second section) is arranged on the top into stove coal bunker 22, mainly comprise filter body 231, off-air enters siphunculus 232 outward, dust funnel 233, in off-air, discharge siphunculus 234, off-air is discharged siphunculus 235 outward, off-air enters siphunculus 232 outward and is arranged on filter body 231 neighborings, be provided with dust funnel 233 in filter body 231 inside, dust funnel 233 leads to into stove coal bunker 22, above dust funnel 233, be provided with and in off-air, discharge siphunculus 234, off-air enters the entrance of siphunculus 232 outward higher than discharging siphunculus 234 entrances in off-air, off-air enters siphunculus 232 outward and forms cyclone structure with 234 one-tenth vertical angles of discharge siphunculus in off-air at filter body 231, in off-air, discharging siphunculus 234 is arranged on strainer internal head cover 237, off-air is discharged siphunculus 235 outward and is arranged on the outer top cover 238 of strainer, outside strainer internal head cover 237 and strainer, between top cover 238, be provided with steel fiber filtering net 236.
In addition; as shown in figure 11; this example also comprises into device for coal electric controller 902; enter coal electric controller 902 to entering stove cuttings conveyer 21 and blanking control valve 24 is controlled; entering device for coal electric controller 902 is connected with upper industry control center 90 again; certainly from electric control theory, in this example, enter stove cuttings conveyer 21 and blanking control valve 24 and controlled by industry control center 90, do not form restriction to this routine protection domain so arrange into device for coal electric controller 902 herein.
Second section enters the preheating of stove coal
As shown in Figure 5, Figure 6: primary heater unit 39 is placed in into the below of device for coal 2, and primary heater unit 39 is positioned at the top of coal heat decomposition stove 9.
As Fig. 6, Fig. 7, shown in Fig. 8, primary heater unit 39 mainly includes body of heater 91, exhaust air chamber 391, at least one above heating by the exhaust gases passage 392, preheater 393, in body of heater 91 is divided into, in, outer three layers of body of wall 913, 912, 911 (shown in Fig. 8), internal layer body of wall 913 form exhaust air chamber 391 middle level bodies of wall 912 and outer body of wall 911 between form waste gas assemble circuit 395, assemble circuit 395 at waste gas and be provided with waste gas primary outlet 3951, in heating by the exhaust gases passage 392 passes, middle level body of wall 913, exhaust air chamber 391 and waste gas are assembled circuit 395 by 912 to be communicated with, and will between internal layer body of wall 913 and middle level body of wall 912, be separated into several preheating chambers 394 (as shown in Figure 8, this example has 8 heating by the exhaust gases passages 392 will be separated out 8 preheating chambers 394), preheater 393 is placed in respectively each preheating chamber 394.
As shown in Figure 7, Figure 8: 393 one-tenth round shapes of preheater adopt steel, preheater 393 comprises that cylindrical shell 3931, taper divide to device 3932, open wide funnel 3933, pre-hot coal blanking road 3934, taper divides to device 3932 and unlimited funnel 3933 arranges in groups from top to bottom successively on cylindrical shell 3931, is beneficial to entering the even preheating of coal stove.
As shown in Fig. 8, Fig. 6, body of heater 91 adopts circle to be beneficial to space priorization, and between preheater 393 and preheating chamber 394, reserved certain space, utilizes the warm air in preheating chamber 394 to heat preheater 393, and homogeneous heating is stable.
As shown in Figure 6, on body of heater 91, be provided with and lead to preheating chamber thermometer hole 3941, preheating chamber thermometer 3942 is arranged on preheating chamber thermometer hole 3941 and exports the temperature variation for monitoring preheating chamber 394, on body of heater 91, be provided with and lead to exhaust air chamber thermometer hole 3914, exhaust air chamber thermometer 3915 is arranged on waste gas thermometer hole 3914 and exports the temperature variation for monitoring exhaust air chamber 391, in addition, at the top of exhaust air chamber 391, upper observation hole 3912 is set, lower observation hole 3913 is set so that technician observes exhaust air chamber 391 in the bottom of exhaust air chamber 391, the working condition of coal heat decomposition stove 9 bottoms.
As shown in Figure 5, Figure 6, preheating chamber 394 is provided with preheating off-air outlet duct 396, the off-air that preheating off-air outlet duct 396 leads to coal fine filter 23 enters siphunculus 232 outward, the hot off-air of dust-laden of preheating chamber 394 tops is entered to off-air and enter outward in siphunculus 232, the stove coal that enters being conducive in coal stove storehouse 22 drops into preheating in preheating chamber 394 smoothly.
As Fig. 5, Fig. 6, shown in Fig. 8, the bottom of exhaust air chamber 391 is provided with hot waste gas admission passage 3911, hot waste gas after burning enters from hot waste gas admission passage 3911, entering waste gas by heating by the exhaust gases passage 392 assembles in circuit 395, finally discharge from the waste gas primary outlet 3951 of waste gas gathering circuit 395, hot waste gas after burning can be to heating by the exhaust gases passage 392 in discharge process, internal layer body of wall 913, internal layer body of wall 912 carries out thermal conduction, the unique texture design of this primary heater unit 39, be to utilize the hot waste gas of discharging after burning from exhaust air chamber 391 to heat air in preheating chamber 394, the stove coal that enters reaching falling into preheater 393 carries out preheating, can lower the temperature to the hot waste gas of discharging after burning from exhaust air chamber 391 again simultaneously, do not need to consume the extra energy, reach self the UTILIZATION OF VESIDUAL HEAT IN object to the hot waste gas after burning.
In addition, as shown in figure 11, this example also comprises that preheating temperature monitor 903 is for monitoring the temperature data of preheating chamber thermometer 3942 and exhaust air chamber thermometer 3915.Preheating temperature monitor 903 is connected with upper industry control center 90 again; certainly from electric control theory; in this example, preheating chamber thermometer 3942 and exhaust air chamber thermometer 3915 are monitored by also can directly at industry control center 90, do not form restriction to this routine protection domain so preheating temperature monitor 903 is set herein.
Section three, the stove coal that enters after preheating regulates
As shown in Figure 5, Figure 6, enter stove coal surge bunker 3, entering stove coal surge bunker 3 is arranged on and on body of heater 91, is positioned at preheater 393 bottoms, the periphery of exhaust air chamber 391, enters stove coal surge bunker 3 and comprises the upper and lower material level meter of coal pocket 31, coal bunker 32,33, coal pocket thermometer 34, coal pocket blanking road 35, coal pocket baiting valve 36.
As shown in Figure 5, Figure 6, coal pocket 31 tops connect preheater 393 bottoms, the upper and lower material level meter 32,33 of coal bunker is located at respectively top and the bottom of coal pocket 31, coal pocket thermometer 34 is positioned at coal pocket 31 middle parts, coal pocket blanking road 35 is connected on the bottom of coal pocket 31 by coal pocket baiting valve 36, coal pocket blanking road 35 leads to coal heat decomposition stove coking chamber 61 (shown in Fig. 9).
In addition, as shown in figure 11: this example also includes stove coal and regulates electric controller 904 for gathering coal bunker, lower level gage 32, 33 material level signal, the temperature signal of coal pocket thermometer 34, realize automatically and controlling with the switching to coal pocket baiting valve 36, entering stove coal regulates electric controller 904 to be connected with upper industry control center 90 again, certainly from electric control theory, in this example, gather on coal bunker, lower level gage 32, 33 material level signal, the temperature signal of coal pocket thermometer 34 is gathered by also can directly at industry control center 90, coal pocket baiting valve 36 opens and closes and controlled by industry control center 90, regulate electric controller 904 not form the restriction to this routine protection domain so set into stove coal herein.
This example enters stove coal control method:
1, the stove coal that enters after preheating is injected to coal pocket 31 and first stores away in advance, when needs to coking chamber 61 in when coal, industry control center 90 is opened coal pocket baiting valve 36 and is injected into stove coal in coking chamber 61;
2, in the time that needs stop coal to coking chamber, coal pocket baiting valve 36 is closed at industry control center 90, stops adding stove coal in coking chamber 61;
3, in the time that level gage under coal bunker 33 detects the coal deficiency in coal pocket 31, blanking control valve 24 is opened at industry control center 90, give coal in coal pocket 31, when detecting the coal in coal pocket 31, level gage on coal bunker 32 fills it up with, blanking control valve 24 is closed at industry control center 90, stop to coal pocket 31 coals, the stove coal that enters playing entering coking chamber 61 regulates.
As shown in Figure 5, Figure 6, coal pocket 31 tops are also provided with coal pocket hot air discharge passage 37, the off-air that coal pocket hot air discharge passage 37 leads to coal fine filter 23 enters siphunculus 232 outward, the dust-laden warm air of coal pocket 31 tops is entered off-air and is entered outward in siphunculus 232, is beneficial to coal smoothly in coal pocket 31
Section four, enter before coking chamber to enter stove coal cooling
As shown in Figure 9, coal pocket blanking road 35 is in the time of the coking chamber 61 note coal to coal heat decomposition stove, because coking chamber 61 tops exist the raw gas producing in a large amount of pyrolysis of coal processes, the higher meeting of raw gas temperature is carried out thermal conduction to coal pocket blanking road 35 bodys and body of heater 91, cause stove coal easily to lump in coal pocket blanking road 35, hinder and note coal in coking chamber 61, thereby need to carry out cooling to entering stove coal.
As Fig. 9, shown in Figure 10, enter stove coal refrigerating unit 5 and comprise that air enters siphunculus 57, Bas Discharged siphunculus 51, air enters endless tube 56, Bas Discharged endless tube 52, air enters arm 54, Bas Discharged arm 53, cooling air channel 55, wherein, air enters siphunculus 57 and enters endless tube 56 with air, Bas Discharged siphunculus 51 communicates with Bas Discharged endless tube 52, air enters endless tube 56, Bas Discharged endless tube 52 is separately positioned on the surrounding of body of heater 91, air enters and on endless tube 56 and Bas Discharged endless tube 52, is connected to respectively air and enters arm 54, Bas Discharged arm 53, wherein air enters arm 54 and is connected on cooling air channel 55 belows, Bas Discharged arm 53 is connected on the top of cooling air channel 55, coal pocket blanking road 35 passes and leads to coking chamber 61 from cooling air channel 55.
As Figure 10, shown in Fig. 9, because this body of heater 91 is designed to annular, the coal pocket 31 that is provided with 8 note coals in its surrounding is beneficial to coking chamber 61 surroundings and carries out even coal, so the quantity in cooling air channel 55 and coal pocket blanking road 35 is corresponding is also 8, siphunculus 57, enter successively air and enter endless tube 56 when air enters from air, air enters arm 54, cooling air channel 55, again from Bas Discharged arm 53, Bas Discharged endless tube 52, in Bas Discharged siphunculus 51, discharge, utilizing in cooling air channel 55 carries out cooling to the stove coal that enters in coal pocket blanking road 35, effectively prevent that stove coal from luming in coal pocket blanking road 35, realize and in coking chamber 61, note coal smoothly.
In addition, coal pocket blanking road 35 is mainly that the inner side that relies on coking chamber 61 is subject to the heat affecting of raw gas larger, so the inner side-wall 351 in coal pocket blanking road 35 is placed in cooling air channel 55, the outer side wall 352 in coal pocket blanking road 35 is exposed in air, utilize natural air to carry out cooling, reduce to blast the air quantity in cooling air channel 55, thereby save energy consumption.
Claims (2)
1. enter the continuous coal method of stove coal, it is characterized in that: the related equipment of present method comprises into device for coal, primary heater unit, enters stove coal surge bunker, and present method performing step is:
(1), open stove cuttings conveyer and a certain amount ofly after dehydration, enter stove coal to entering to input in stove coal bunker;
(2), open blanking control valve, enter entering stove coal through coal dust distribution chamber and entering stove coal bunker tremie pipe in stove coal bunker and enter into preheater, utilize the hot waste gas of discharging after burning from exhaust air chamber to heat air in the preheating chamber of primary heater unit, the stove coal that enters reaching falling into preheater carries out preheating, can lower the temperature to the hot waste gas of discharging after burning from exhaust air chamber again simultaneously, enter stove coal and after preheating, fall into coal pocket, when detecting the coal in coal pocket, level gage on coal bunker fills it up with, close blanking control valve, stop to coal pocket coal, entering stove coal first stores away in advance at coal pocket,
(3), when needs are in coking chamber when coal, open coal pocket baiting valve and inject stove coal to adding in coking chamber;
(4), in the time that needs stop coal to coking chamber, close coal pocket baiting valve, stop adding stove coal in coking chamber;
(5), in coal pocket, enter stove coal when not enough when level gage under coal bunker detects, open blanking control valve, give coal in coal pocket, fill it up with when level gage on coal bunker detects the coal in coal pocket, close blanking control valve, stop to coal pocket coal.
2. one according to claim 1 enters the continuous coal method of stove coal, it is characterized in that: the related equipment of present method also comprises industry control center, industry control center with enter the electrical connection of stove cuttings conveyer and blanking control valve, with monitoring preheating chamber thermometer with exhaust air chamber thermometer is electric is used in conjunction in temperature monitoring; Be electrically connected with the upper and lower material level meter of coal bunker, coal pocket thermometer, coal pocket baiting valve, for to entering, stove cuttings conveyer, blanking control valve, coal pocket baiting valve are directly controlled and to monitoring the monitoring of preheating chamber thermometer, exhaust air chamber thermometer, coal pocket thermometer, present method performing step is preferably:
(1), industry control center is opened stove cuttings conveyer and a certain amount ofly after dehydration, is entered stove coal to entering to input in stove coal bunker;
(2), blanking control valve is opened at industry control center, enter entering stove coal through coal dust distribution chamber and entering stove coal bunker tremie pipe in stove coal bunker and enter into preheater, utilize the hot waste gas of discharging after burning from exhaust air chamber to heat air in the preheating chamber of primary heater unit, the stove coal that enters reaching falling into preheater carries out preheating, can lower the temperature to the hot waste gas of discharging after burning from exhaust air chamber again simultaneously, enter stove coal and after preheating, fall into coal pocket, in the time that industry control center receives that level gage on coal bunker detects that coal in coal pocket has been filled it up with signal, industry control closed center blanking control valve, stop to coal pocket coal, entering stove coal first stores away in advance at coal pocket,
(3), when needs are in coking chamber when coal, industry control center is opened coal pocket baiting valve and is injected stove coal to adding in coking chamber;
(4), in the time that needs stop coal to coking chamber, industry control closed center coal pocket baiting valve, stops adding stove coal in coking chamber;
(5), when industry control center receive level gage under coal bunker detect in coal pocket enter stove coal shortage signal time, blanking control valve is opened at industry control center, give coal in coal pocket, in the time that industry control center receives that level gage on coal bunker detects that coal in coal pocket has been filled it up with signal, industry control closed center blanking control valve, stops to coal pocket coal.
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