CN102796546B - Preheating device of coal as fired in coal pyrolysis furnace - Google Patents
Preheating device of coal as fired in coal pyrolysis furnace Download PDFInfo
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- CN102796546B CN102796546B CN201210278671.5A CN201210278671A CN102796546B CN 102796546 B CN102796546 B CN 102796546B CN 201210278671 A CN201210278671 A CN 201210278671A CN 102796546 B CN102796546 B CN 102796546B
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Abstract
The invention discloses a preheating device of coal as fired in a coal pyrolysis furnace. The preheating device comprises a furnace body, a waste gas chamber, more than one waste gas preheating channel and preheaters; the furnace body is divided into an inner, middle and outer wall bodies, the waste gas chamber is formed at the inner wall body, a waste gas gathering loop is formed between the middle wall body and the outer wall body, a main waste gas outlet is arranged in the waste gas gathering loop, the waste gas preheating channel passes through the inner and middle wall bodies to communicate the waste air chamber with the waste gas gathering loop, a plurality of preheating chambers are partitioned between the inner wall body and the middle wall body, and the preheaters are respectively arranged in each preheating chamber; and the bottom of the waste gas chamber is provided with a hot waste gas inlet channel, hot waste gas after combustion enters from the hot waste gas inlet channel, enters the waste gas gathering loop through the waste gas preheating channel and is finally discharged out from the main waste gas outlet of the waste gas gathering loop. In the preheating device, the coal as fired falling into the preheater is preheated by using the hot waste gas, and simultaneously the temperature of the hot waste gas also can be reduced so as to achieve the purpose of utilizing own exhaust heat of the hot waste gas.
Description
Technical field
The present invention relates to a kind of primary heater unit, particularly a kind ofly utilize the hot waste gas after coal heat decomposition stove burning to carry out primary heater unit to entering stove coal.
Background technology
In pyrolysis of coal technology, wish that stove coal kept certain temperature before entering coal heat decomposition stove coking chamber, just can produce the coke of better grade.
Yet coal heat decomposition stove in the market (pit kiln) mostly adopts intermittent type coking, coal heat decomposition stove can produce a large amount of hot waste gass, this hot waste gas often, directly to airborne release, does not utilize hot waste gas fully, and enter stove coal, in process course of conveying, can temperature reduce.
This impels the inventor to think deeply to develop and a kind ofly can utilize the hot waste gas after coal heat decomposition stove burning to carry out primary heater unit to entering stove coal.
Summary of the invention
What the invention provides a kind of coal heat decomposition stove enters stove coal primary heater unit, and the hot waste gas that this primary heater unit makes full use of after coal heat decomposition stove burning heats entering stove coal, and not needing increases extra heating setting, and simple in structure, heats is good, saves coking cost.
The present invention is achieved through the following technical solutions:
Enter a stove coal primary heater unit, be arranged on into device for coal below, and be positioned at the top of coal heat decomposition stove, include body of heater, exhaust air chamber, at least one above heating by the exhaust gases passage, preheater; That body of heater is divided into is interior, in, outer three layers of body of wall, internal layer body of wall form exhaust air chamber, between middle level body of wall and outer body of wall, form waste gas and assemble circuit, at waste gas, assemble in circuit and be provided with waste gas primary outlet, heating by the exhaust gases passage is assembled circuit by exhaust air chamber and waste gas and is communicated with through interior, middle level body of wall, and will between internal layer body of wall and middle level body of wall, being separated into several preheating chambers, preheater is placed in respectively each preheating chamber; The bottom of exhaust air chamber is provided with hot waste gas admission passage, hot waste gas after burning enters from hot waste gas admission passage, by heating by the exhaust gases passage, entering waste gas assembles in circuit, finally from waste gas, assemble the waste gas primary outlet discharge of circuit, the hot waste gas after burning can carry out thermal conduction to heating by the exhaust gases passage, internal layer body of wall, middle level body of wall in discharge process.
Preferably, described preheater comprises that cylindrical shell, taper divide to device, opens wide funnel, pre-hot coal blanking road, and taper divides to device and unlimited funnel arranges in groups from top to bottom successively on cylindrical shell.
Preferably, reserved certain space between described preheater and preheating chamber.
Preferably, also comprise coal fine filter, described coal fine filter comprises filter body, the outer top cover of strainer, strainer internal head cover, steel fiber filtering net, off-air enters siphunculus, dust funnel, in off-air, discharge siphunculus, off-air is discharged siphunculus outward, filter body periphery is provided with the off-air that leads to top from bottom and enters siphunculus, in filter body inside, be provided with dust funnel, dust funnel leads to into stove coal bunker, in off-air, discharging siphunculus is arranged on strainer internal head cover, and be positioned at above dust funnel, the entrance of discharging siphunculus in off-air enters the entrance of siphunculus lower than off-air, off-air is discharged siphunculus outward and is arranged on the outer top cover of strainer, outside strainer internal head cover and strainer, between top cover, be provided with steel fiber filtering net, described preheating chamber is provided with preheating off-air outlet duct, the off-air that preheating off-air outlet duct leads to coal fine filter enters siphunculus, the hot off-air of dust-laden of preheating chamber top is entered to off-air and enter in siphunculus, be beneficial to stove coal and drop into smoothly preheating in preheating chamber.
Preferably, described body of heater is provided with and leads to preheating chamber thermometer hole, and preheating chamber thermometer is arranged on the outlet of preheating chamber thermometer hole for monitoring the temperature variation of preheating chamber; Body of heater is provided with and leads to exhaust air chamber thermometer hole, and exhaust air chamber thermometer is arranged on the outlet of waste gas thermometer hole for monitoring the temperature variation of exhaust air chamber.
Preferably, also comprise industry control center, described industry control center is connected for temperature monitoring with exhaust air chamber thermometer with monitoring preheating chamber thermometer.
Preferably, also comprise preheating temperature monitor, described preheating temperature monitor is connected between industry control center and monitoring preheating chamber thermometer and exhaust air chamber thermometer, and industry control center is carried out temperature by preheating temperature monitor to monitoring preheating chamber thermometer and exhaust air chamber thermometer and monitored.
Preferably, the top of described exhaust air chamber arranges upper observation hole.
The present invention enters the unique texture design of stove primary heater unit, be to utilize the hot waste gas of discharging after burning from exhaust air chamber to heat air in preheating chamber, reach and carry out preheating to falling into the stove coal that enters of preheater, can lower the temperature to the hot waste gas of discharging after burning from exhaust air chamber 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.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is that the related stove coal dewatering device that enters of stove coal primary heater unit that enters of coal heat decomposition stove of the present invention is assembled schematic diagram;
Fig. 2 is A place enlarged view in Fig. 1;
Fig. 3 be coal heat decomposition stove of the present invention enter the related coal fine filter of stove coal primary heater unit one embodiment schematic top plan view;
Fig. 4 be coal heat decomposition stove of the present invention enter another embodiment schematic top plan view of the related coal fine filter of stove coal primary heater unit;
Fig. 5 is entering stove coal primary heater unit and entering before coal and enter device for coal and continuously afterwards enter the device assembling cross-sectional schematic such as stove coal adjusting of this coal heat decomposition stove of the present invention;
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 of coal heat decomposition stove of the present invention;
Fig. 8 is a-a place sectional view in Fig. 6;
Fig. 9 be coal heat decomposition stove of the present invention enter stove coal primary heater unit related enter stove coal refrigerating unit schematic diagram;
Figure 10 is b-b place sectional view in Fig. 9;
Figure 11 be coal heat decomposition stove of the present invention enter the related electrical connection schematic diagram of stove coal primary heater unit.
Embodiment
The specific embodiment that enters stove coal primary heater unit of coal heat decomposition stove of the present invention is mainly introduced in detail in following third part second section.
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 the required restriction that enters stove coal dust of coal heat decomposition stove of the present invention, just by above, lifted enter stove coal proportioning and can reach more than 40% the weakly caking coal amount of allocating into, reduced the cost that enters stove coal and can obtain the coke of better quality again, 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 a plurality of 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, in filter body 131 periphery settings, be provided with and in the off-air that leads to top from bottom, enter siphunculus 132, in filter body inside, be provided with dust funnel 133, 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 enters by hot waste gas master the waste gas admission passage 1251 that tracheae 122 enters waste gas radiator element 125 inside, dehydration waste gas exhaust channel 1252 by waste gas radiator element 125 inside enters the main discharge tracheae 123 of dehydration waste gas again, after cleaning through the water layer in dust settling chamber 152 again, from chimney 16, discharge, 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 hot waste gas exhaust temperature again, 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 ℃～800 ℃ 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 the stove coal that enters through waste gas radiator element 125 is dewatered, 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 the bottom that stove coal transfer roller 17 is arranged on coal bunker 14.
As shown in figure 11: this example also comprises industry control center 90,90 pairs, industry control center with 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 901 pairs of stove coal electric controllers enters stove coal transfer roller 17, induced draft fan 18 and bucket elevator 11 and automatically controls respectively, 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, dehydration waste gas exhaust channel 1252 by waste gas radiator element 125 inside enters the main discharge tracheae 123 of dehydration waste gas again, and the water layer entering again in dust settling chamber 152 by induced draft fan 18 cleans afterwards from chimney 16 discharges;
3, meanwhile, enter stove coal through waste gas radiator element 125, fall into 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, finally by crossing steel fiber filtering net 136 and off-air, discharge siphunculus 135 discharges outward, 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.
Third part enters stove coal and enters coal, preheating, adjusting, cooling
Entering stove coal and generally can be down to normal temperature through temperature after carrying after dehydration, particularly winter temperature is lower, temperature may be lower, but but it is more suitable to wish that stove coal temperature remains between 200 ℃ to 300 ℃ during 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, in filter body 231 inside, be provided with dust funnel 233, 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 in off-air, discharges 234 one-tenth vertical angles of siphunculus at filter body 231 formation cyclone structures, 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 that 902 pairs of coal electric controllers enter 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, so arrange into device for coal electric controller 902, do not form the restriction to this routine protection domain 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 forms exhaust air chamber 391, 911 of middle level body of wall 912 and outer body of wall form waste gas and assemble circuit 395, at waste gas, assemble circuit 395 and be provided with waste gas primary outlet 3951, in heating by the exhaust gases passage 392 passes, middle level body of wall 913, 912 assemble circuit 395 by exhaust air chamber 391 and waste gas is 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 reserved certain space between preheater 393 and preheating chamber 394 utilizes the warm air in exhaust air chamber 391 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 3941 outlets of preheating chamber thermometer hole for monitoring the temperature variation of 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 3914 outlets of waste gas thermometer hole for monitoring the temperature variation of exhaust air chamber 391, in addition, at the top of exhaust air chamber 391, upper observation hole 3912 is set, in the bottom of exhaust air chamber 391, lower observation hole 3913 is set so that technician observes 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, by heating by the exhaust gases passage 392, entering waste gas assembles in circuit 395, finally from waste gas, assemble waste gas primary outlet 3951 discharges of 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, middle level 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, reach and carry out preheating to falling into the stove coal that enters of preheater 393, 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 also can directly be subject to 90 monitorings of industry control center, so preheating temperature monitor 903 is set, do not form the restriction to this routine protection domain herein.
The stove coal that enters after the 3rd joint 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 coal pocket 31, the upper and lower material level meter 32,33 of coal bunker, 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 control automatically 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, so set into stove coal herein, regulate electric controller 904 not form the restriction to this routine protection domain.
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 during coal, industry control center 90 is opened coal pocket baiting valves 36 and is injected into stove coal in coking chamber 61;
2, when 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;
When 3, under coal bunker, level gage 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, the coal that level gage 32 detects in coal pocket 31 on coal bunker is filled it up with, blanking control valve 24 is closed at industry control center 90, stop to coal pocket 31 coals, play and regulate entering the stove coal that enters of coking chamber 61.
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
The 4th save into before coking chamber to enter stove coal cooling
As shown in Figure 9, coal pocket blanking road 35 is when the coking chamber 61 notes 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, obstruction is noted 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, in its surrounding, being provided with 8 coal pockets 31 of noting coals 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, when air enters from air, siphunculus 57, enter successively air and enter endless tube 56, 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 (8)
- Coal heat decomposition stove enter a stove coal primary heater unit, be arranged on into device for coal below, and be positioned at the top of coal heat decomposition stove, it is characterized in that: include body of heater, exhaust air chamber, at least one above heating by the exhaust gases passage, preheater; That body of heater is divided into is interior, in, outer three layers of body of wall, internal layer body of wall form exhaust air chamber, between middle level body of wall and outer body of wall, form waste gas and assemble circuit, at waste gas, assemble in circuit and be provided with waste gas primary outlet, heating by the exhaust gases passage is assembled circuit by exhaust air chamber and waste gas and is communicated with through interior, middle level body of wall, and will between internal layer body of wall and middle level body of wall, being separated into several preheating chambers, preheater is placed in respectively each preheating chamber; The bottom of exhaust air chamber is provided with hot waste gas admission passage, hot waste gas after burning enters from hot waste gas admission passage, by heating by the exhaust gases passage, entering waste gas assembles in circuit, finally from waste gas, assemble the waste gas primary outlet discharge of circuit, the hot waste gas after burning can carry out thermal conduction to heating by the exhaust gases passage, internal layer body of wall, middle level body of wall in discharge process.
- 2. a kind of coal heat decomposition stove according to claim 1 enters stove coal primary heater unit, it is characterized in that: described preheater comprises that cylindrical shell, taper divide to device, open wide funnel, pre-hot coal blanking road, taper divides to device and unlimited funnel arranges in groups from top to bottom successively on cylindrical shell.
- A kind of coal heat decomposition stove according to claim 1 enter stove coal primary heater unit, it is characterized in that: reserved certain space between described preheater and preheating chamber.
- 4. a kind of coal heat decomposition stove according to claim 1 enters stove coal primary heater unit, it is characterized in that: also comprise coal fine filter, described coal fine filter comprises filter body, the outer top cover of strainer, strainer internal head cover, steel fiber filtering net, off-air enters siphunculus, dust funnel, in off-air, discharge siphunculus, off-air is discharged siphunculus outward, filter body periphery is provided with the off-air that leads to top from bottom and enters siphunculus, in filter body inside, be provided with dust funnel, dust funnel leads to into stove coal bunker, in off-air, discharging siphunculus is arranged on strainer internal head cover, and be positioned at above dust funnel, the entrance of discharging siphunculus in off-air enters the entrance of siphunculus lower than off-air, off-air is discharged siphunculus outward and is arranged on the outer top cover of strainer, outside strainer internal head cover and strainer, between top cover, be provided with steel fiber filtering net, described preheating chamber is provided with preheating off-air outlet duct, the off-air that preheating off-air outlet duct leads to coal fine filter enters siphunculus, the hot off-air of dust-laden of preheating chamber top is entered to off-air and enter in siphunculus, be beneficial to stove coal and drop into smoothly preheating in preheating chamber.
- A kind of coal heat decomposition stove according to claim 1 enter stove coal primary heater unit, it is characterized in that: described body of heater is provided with and leads to preheating chamber thermometer hole, preheating chamber thermometer is arranged on the outlet of preheating chamber thermometer hole for monitoring the temperature variation of preheating chamber; Body of heater is provided with and leads to exhaust air chamber thermometer hole, and exhaust air chamber thermometer is arranged on the outlet of waste gas thermometer hole for monitoring the temperature variation of exhaust air chamber.
- A kind of coal heat decomposition stove according to claim 5 enter stove coal primary heater unit, it is characterized in that: also comprise industry control center, described industry control center is connected for temperature monitoring with exhaust air chamber thermometer with monitoring preheating chamber thermometer.
- 7. a kind of coal heat decomposition stove according to claim 6 enters stove coal primary heater unit, it is characterized in that: also comprise preheating temperature monitor, described preheating temperature monitor is connected between industry control center and monitoring preheating chamber thermometer and exhaust air chamber thermometer, and industry control center is carried out temperature by preheating temperature monitor to monitoring preheating chamber thermometer and exhaust air chamber thermometer and monitored.
- A kind of coal heat decomposition stove according to claim 1 enter stove coal primary heater unit, it is characterized in that: the top of described exhaust air chamber arranges upper observation hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210278671.5A CN102796546B (en) | 2012-08-06 | 2012-08-06 | Preheating device of coal as fired in coal pyrolysis furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210278671.5A CN102796546B (en) | 2012-08-06 | 2012-08-06 | Preheating device of coal as fired in coal pyrolysis furnace |
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| Publication Number | Publication Date |
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| CN102796546A CN102796546A (en) | 2012-11-28 |
| CN102796546B true CN102796546B (en) | 2014-01-29 |
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| CN201210278671.5A Expired - Fee Related CN102796546B (en) | 2012-08-06 | 2012-08-06 | Preheating device of coal as fired in coal pyrolysis furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3013325C2 (en) * | 1980-04-05 | 1985-07-18 | Carl Still Gmbh & Co Kg, 4350 Recklinghausen | Process for drying and preheating coal using the sensible heat of coke during dry coke cooling or extinguishing |
| JPS61103986A (en) * | 1984-10-26 | 1986-05-22 | Nippon Steel Corp | Continuous production method and equipment for blast furnace coke |
| CN201258312Y (en) * | 2008-06-06 | 2009-06-17 | 曹祖斌 | Interior heat type multiple layer gas distribution carbonization furnace |
| CN102250629B (en) * | 2011-06-13 | 2013-09-04 | 山西利华新科技开发有限公司 | Coking furnace capable of recycling heat energy and coking method |
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