CN103087744B - Coal as fired dehydrating device of coal pyrolysis furnace - Google Patents
Coal as fired dehydrating device of coal pyrolysis furnace Download PDFInfo
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- CN103087744B CN103087744B CN201210278650.3A CN201210278650A CN103087744B CN 103087744 B CN103087744 B CN 103087744B CN 201210278650 A CN201210278650 A CN 201210278650A CN 103087744 B CN103087744 B CN 103087744B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a coal as fired dehydrating device of a coal pyrolysis furnace. The device comprises a dehydrating frame body, a bucket elevator, a waste gas dehydrator, a coal dust filter, bunkers, a dust remover, a chimney and a coal as fired conveyor, wherein the waste gas dehydrator and the coal dust filter are arranged on the dehydrating frame body in parallel; the bunkers are arranged below the waste gas dehydrator and the coal dust filter; the bucket elevator is arranged beside the waste gas dehydrator; the bucket elevator is connected with the coal as fired conveyor; the dust remover is connected with a main dehydrated waste gas exhaust pipe; and the chimney is connected with the dust remover. The coal as fired dehydrating device can dehydrate the coal as fired by utilizing the burnt gas of the coal pyrolysis furnace and can purify the burnt gas of the coal pyrolysis furnace, thus avoiding air pollution caused by dust-containing waste gas in the emission process.
Description
Technical field
The present invention relates to a kind of dewatering unit, particularly a kind ofly utilize the hot waste gas after burning to the as-fired coal dewatering unit of coal heat decomposition stove.
Background technology
Coal heat decomposition stove (pit kiln) in the market mostly adopts intermittent type coking, as-fired coal material is wet coal, so power consumption, increases the cost of coking, and amount of heat in pyrolysis of coal process, can be produced, traditional coal heat decomposition stove does not effectively utilize it.
This impels the present inventor to think deeply to develop one and utilizes coal heat decomposition stove own combustion waste gas to carry out drying and dehydrating device to entering coal.
Summary of the invention
The invention provides a kind of as-fired coal dewatering unit of coal heat decomposition stove, this dewatering unit both can utilize coal heat decomposition stove own combustion waste gas to carry out drying and dehydrating to entering coal, and can also purify coal heat decomposition stove own combustion waste gas, avoid dust-laden exhaust gas to pollute air in discharge process.
The present invention is achieved through the following technical solutions:
A kind of as-fired coal dewatering unit of coal heat decomposition stove, comprise dehydration support body, bucket elevator, waste gas water trap, coal fine filter, feed bin, fly-ash separator, chimney, as-fired coal transfer roller, described waste gas water trap and coal fine filter are set up in parallel and dewater on support body, waste gas water trap comprises dehydrator shell, hot waste gas master enters pipe, the main discharge tracheae of dehydration waste gas, feeder, waste gas radiator element, dehydrator shell is a cavity housing, feeder is arranged on above dehydrator shell, at least one group of waste gas radiator element is provided with in dehydrator shell inside below feeder, the inside of waste gas radiator element is provided with hot waste gas admission passage, dehydration waste gas exhaust channel, hot waste gas admission passage and dehydration waste gas exhaust channel enter pipe with hot waste gas master respectively, the main discharge tracheae of dehydration waste gas communicates, described coal fine filter, comprise filter body, the outer top cover of strainer, strainer internal head cover, metal fiber filter, off-air enters siphunculus, dust funnel, siphunculus is discharged in off-air, off-air discharges siphunculus outward, filter body periphery is provided with the off-air leading to top from bottom and enters siphunculus, filter body inside is provided with dust funnel, discharging siphunculus in off-air 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, metal fiber filter is provided with between strainer internal head cover and the outer top cover of strainer, described feed bin is arranged on the below of waste gas water trap, coal fine filter, described bucket elevator is arranged on waste gas water trap place, and bucket elevator is connected with as-fired coal transfer roller, and described fly-ash separator is connected with the main discharge tracheae of dehydration waste gas, described chimney is connected with fly-ash separator.
Preferably, the hot waste gas admission passage of described waste gas water trap and dehydration waste gas exhaust channel in the inside of waste gas radiator element in being arranged above and below.
Preferably, the feeder of described waste gas water trap includes hopper, pan feeding vibratory screening apparatus, blanking channel, blanking vibratory screening apparatus, arrange pan feeding vibratory screening apparatus in material bin, being scattered by middle part below material bin is provided with multiple blanking channel, below blanking channel, be provided with again blanking vibratory screening apparatus.
Preferably, the waste gas radiator element of described waste gas water trap becomes the arrangement of three groups, upper, middle and lower, waste gas external form of cooling fin makes acute triangle upward, shift to install between upper group of waste gas radiator element and middle group of waste gas radiator element, namely the waste gas radiator element in group is just in time arranged between two adjacent waste gas radiator element in group, in like manner, lower group of waste gas radiator element is just in time arranged between two adjacent waste gas radiator element in middle group.
Preferably, the off-air of described coal fine filter enters siphunculus and discharges siphunculus in off-air and become vertical angle to form cyclone structure in filter body.
As-fired coal dewatering unit of the present invention not only utilizes coal heat decomposition stove own combustion waste gas to carry out drying and dehydrating device to entering coal, do not need extra increase power consumption heating installation, enter stove dehydration cost low, and can also purify coal heat decomposition stove own combustion waste gas, avoid dust-laden exhaust gas to pollute air in discharge process.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is as-fired coal dewatering unit of the present invention assembling schematic diagram;
Fig. 2 is A place enlarged view in Fig. 1;
Fig. 3 is the water trap one embodiment schematic top plan view in as-fired coal dewatering unit of the present invention;
Fig. 4 is another embodiment schematic top plan view of water trap in as-fired coal dewatering unit of the present invention;
Fig. 5 is that the as-fired coal after as-fired coal dewatering unit dehydration of the present invention enters the device assembling cross-sectional schematic such as coal, preheating, adjustment;
Fig. 6 is C place enlarged view in Fig. 5;
Fig. 7 is the preheater sectional view in the as-fired coal primary heater unit after as-fired coal dewatering unit dehydration of the present invention;
Fig. 8 is a-a place sectional view in Fig. 6;
Fig. 9 forms schematic diagram in stove coal refrigerating unit involved in the present invention;
Figure 10 is b-b place sectional view in Fig. 9;
Figure 11 is the electrical connection schematic diagram that as-fired coal dewatering unit of the present invention relates to.
Embodiment
As-fired coal dewatering unit of the present invention dewatered before entering coal stove pyrolysis oven to as-fired coal, and the specific embodiment of as-fired coal dewatering unit of the present invention is mainly introduced in detail in following second section.
First part as-fired coal proportioning and preparation
A kind of coal heat decomposition stove involved in the present invention, according to different as-fired coal proportionings, can obtain the coke that grade is different.
Following steps: 1) select the coal that 5 kinds different, they are bottle coal, rich coal, coking coal, 1/3rd coking coal, lean coal respectively.2) wherein bottle coal 20% ~ 40%; Rich coal 10% ~ 20%; Coking coal 10% ~ 20%; / 3rd coking coal 15% ~ 30%; Lean coal 10% ~ 15%, first mix fragmentation of then sieving, until crushed particles reaches below 5mm form as-fired coal, the as-fired coal of certain coal heat decomposition stove of the present invention to other proportioning and granular size is applicable equally, do not form the restriction to as-fired coal powder needed for coal heat decomposition stove of the present invention, just can reach more than 40% to the weakly caking coal amount of allocating into by above lifted as-fired coal proportioning, the cost reducing as-fired coal can obtain again the coke of better quality simultaneously, commercially has fine competitive power.
Second section as-fired coal dewaters
Pit kiln in the market mostly adopts intermittent type coking, and as-fired coal material is wet coal, so power consumption, increases the cost of coking, dewaters in advance to the carrying out of the as-fired coal entering this coal heat decomposition stove, play energy-saving and cost-reducing effect.
As shown in Figure 1: described as-fired coal dewatering unit 1 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, as-fired 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, feeder 124 is provided with above dehydrator shell 121, at least one group of waste gas radiator element 125 is provided with below the inner feeder 124 of dehydrator shell 121, 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 in the inside of waste gas radiator element 125 in being arranged above and below, be beneficial to the drying and dehydrating of as-fired 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 by middle part below material bin 1241 and be provided with multiple blanking channel 1243, blanking vibratory screening apparatus 1244 is provided with again below blanking channel 1243, arrange waste gas radiator element 125 below blanking vibratory screening apparatus 1244, the object of design is like this more even in order to allow as-fired coal distribute above waste gas radiator element 125.
As shown in Figure 2: the arrangement of three groups, waste gas radiator element 125 one-tenth upper, middle and lower, waste gas radiator element 125 profile makes acute triangle upward, shift to install between upper group of waste gas radiator element 125 and middle group of waste gas radiator element 125, namely 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 being drying area in order to increase as-fired coal, being beneficial to into coal dispersion landing.
As Fig. 1, Fig. 2, shown in Fig. 3: coal bunker 14 is set below waste gas radiator element 125, coal bunker 14 is put and is provided with coal fine filter 13, our image is called coal dust respiratory organ, coal fine filter 13 mainly comprises filter body 131, siphunculus 132 is entered in off-air, dust funnel 133, siphunculus 134 is discharged in off-air, off-air discharges siphunculus 135 outward, filter body 131 periphery be provided with lead to top from bottom off-air in enter siphunculus 132, filter body inside is provided with dust funnel 133, dust funnel 133 leads to coal bunker 14, be provided with above dust funnel 133 in off-air and discharge siphunculus 134, the entrance 1321 of siphunculus 132 is entered higher than the entrance 1341 of discharging siphunculus 134 in off-air in off-air, discharging siphunculus 134 in off-air 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, metal fiber filter 136 is provided with between strainer internal head cover 137 and the outer top cover 138 of strainer.
As shown in Figure 3: enter siphunculus 132 in off-air and be arranged in filter body 131, enter in off-air and discharge siphunculus 134 one-tenth vertical angle in siphunculus 132 and off-air form cyclone structure in 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 is communicated with chimney 16 by induced draft fan 18 again, flyash delivery pipe 153 is set below dust settling chamber 152, described dust settling chamber 152 can be wet dedusting, also dry-method bag-type dust collecting can be adopted, introduce wet dedusting herein, sprinkler head 154 is provided with above dust settling chamber in shell of dust remover 151, 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 flue gas inlet passageway 1251 that tracheae 122 enters waste gas radiator element 125 inside, the main discharge tracheae 123 of dehydration waste gas is entered again by the dehydration waste gas exhaust channel 1252 of waste gas radiator element 125 inside, discharge from chimney 16 after water layer cleaning again in dust settling chamber 152, in hot waste gas, flyash is stayed in water layer by flyash delivery pipe 153 periodic exhaustion, both played and hot waste gas had been purified, hot waste gas exhaust temperature can be reduced 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 temperature at 700 DEG C ~ 800 DEG C entering hot waste gas master, the waste heat of hot waste gas self is utilized to heat waste gas radiator element 125, hot waste gas after burning can be lowered the temperature, thus the as-fired coal through waste gas radiator element 125 is dewatered, can allow again the water ratio of as-fired coal below 1%, reach effective utilization of the hot waste gas after to burning, save energy consumption.
As shown in Figure 1 and Figure 2: the discharge bucket 111 of bucket elevator 11 is arranged on above material bin 1241, and as-fired coal transfer roller 17 is 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 controls the induced draft fan 18 be directly electrically connected with it, as-fired coal transfer roller 17 and bucket elevator 11,
This example also comprises as-fired coal electric controller 901, as-fired coal electric controller 901 pairs of as-fired coal transfer rollers 17, induced draft fan 18 and bucket elevator 11 control respectively automatically, as-fired coal electric controller 901 is connected with upper industry control center 90 again, realizes the automatization to as-fired coal dehydration.Certainly from electric control theory, in this example, as-fired coal transfer roller 17, induced draft fan 18 and bucket elevator 11 also can directly control by industry control center 90, so arrange as-fired coal electric controller 901 herein do not form restriction to this routine protection domain.
This routine as-fired coal dewatering principle is:
1, industry control center 90 spreads out of as-fired coal transfer roller 17, induced draft fan 18 and bucket elevator 11 initiating signal to as-fired coal electric controller 901, above the as-fired coal feeding dehydrator shell 121 first proportioning completed by bucket elevator 11 in material bin 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 being entered tracheae 122 by hot waste gas master passes in the flue gas inlet passageway 1251 of waste gas radiator element 125 inside, 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, discharge from chimney 16 entered the water layer cleaning in dust settling chamber 152 again by induced draft fan 18 after;
3, meanwhile, as-fired coal also can heat the air in dehydrator shell 121 chamber and in coal bunker 14 storehouse falling into coal bunker 14 process through waste gas radiator element 125, siphunculus 132 (as Fig. 3) is entered in the off-air that heated air utilizes the heat buoyancy of self to enter coal fine filter 13, owing to entering the entrance 1321 of siphunculus 132 in off-air 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, eventually pass metal fiber filter 136 and off-air to discharge siphunculus 135 outward and discharge, dust in off-air falls into the dust funnel 133 of below thus enters coal bunker 14 because metal fiber filter 136 intercepts.
Part III as-fired coal enters coal, preheating, adjustment, cooling
As-fired coal after dehydration temperature after conveying generally can be down to normal temperature, particularly winter temperature is lower, temperature may be lower, but but it is more suitable to wish during coking that as-fired coal temperature remains between 200 DEG C to 300 DEG C, so need before entering the coking chamber of coal heat decomposition stove, to carry out preheating to as-fired coal.
First segment as-fired coal enters coal
As shown in Figure 5: enter that device for coal 2 mainly includes stove cuttings conveyer 21, as-fired coal storehouse 22, coal dust divide to device 25, coal powder distribation room 26, as-fired coal storehouse tremie pipe 29, coal fine filter 23.
As shown in Figure 5, as-fired coal powder handling machinery 21 adopts screw conveying structure, be arranged on above as-fired coal storehouse 22, arranging protruding coal dust in the middle of bottom as-fired coal storehouse 22 divides to device 25, several coal powder distribation rooms 26 will be divided into bottom as-fired coal storehouse 22, this example arranges 8 coal powder distribation rooms 26 altogether, is connected to respectively on as-fired coal storehouse tremie pipe 29, as-fired coal storehouse tremie pipe 29 and arranges blanking control valve 24 bottom coal powder distribation room 26.
As Fig. 5, shown in Fig. 4, coal fine filter 23 (substantially just the same with the coal fine filter structure introduced in this routine second section) is arranged on the top in as-fired coal storehouse 22, mainly comprise filter body 231, siphunculus 232 is entered outside off-air, dust funnel 233, siphunculus 234 is discharged in off-air, off-air discharges siphunculus 235 outward, enter siphunculus 232 outside off-air and be arranged on filter body 231 neighboring, filter body 231 inside is provided with dust funnel 233, dust funnel 233 leads to as-fired coal storehouse 22, be provided with above dust funnel 233 in off-air and discharge siphunculus 234, the entrance of siphunculus 232 is entered higher than discharging siphunculus 234 entrance in off-air outside off-air, enter outside off-air and discharge siphunculus 234 one-tenth vertical angle in siphunculus 232 and off-air and form cyclone structure at filter body 231, discharging siphunculus 234 in off-air 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, metal fiber filter 236 is provided with between strainer internal head cover 237 and the outer top cover 238 of strainer.
In addition; as shown in figure 11; this example also comprises into device for coal electric controller 902; enter coal electric controller 902 pairs of as-fired coal powder handling machinerys 21 and blanking control valve 24 controls; enter device for coal electric controller 902 to be connected with upper industry control center 90 again; certainly from electric control theory, in this example, as-fired coal powder handling machinery 21 and blanking control valve 24 also can directly control by industry control center 90, do not form restriction to this routine protection domain so arrange herein into device for coal electric controller 902.
The preheating of second section as-fired coal
As shown in Figure 5, Figure 6: primary heater unit 39 is placed in the below into device for coal 2, 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, more than at least one 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 formed exhaust air chamber 391 middle level body of wall 912 and outer body of wall 911 between form waste gas and 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 several preheating chambers 394 will be separated between internal layer body of wall 913 and middle level body of wall 912 (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 each preheating chamber 394 respectively.
As shown in Figure 7, Figure 8: preheater 393 one-tenth round shape adopts steel, preheater 393 comprises cylindrical shell 3931, taper divides to device 3932, open wide funnel 3933, pre-hot coal discharge channel 3934, taper divides arranges on cylindrical shell 3931 successively from top to bottom in groups to device 3932 and unlimited funnel 3933, 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 exhaust air chamber 391 to heat preheater 393, and homogeneous heating is stablized.
As shown in Figure 6, body of heater 91 is provided with and leads to preheating chamber thermometer hole 3941, preheating chamber thermometer 3942 is arranged on preheating chamber thermometer hole 3941 and exports temperature variation for monitoring in preheating chamber 394, body of heater 91 is provided with and leads to exhaust air chamber thermometer hole 3914, exhaust air chamber thermometer 3915 is arranged on waste gas thermometer hole 3914 and exports temperature variation for monitoring 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 bottom.
As shown in Figure 5, Figure 6, preheating chamber 394 is provided with preheating off-air outlet duct 396, siphunculus 232 is entered outside the off-air that preheating off-air outlet duct 396 leads to coal fine filter 23, entered outside off-air by hot for dust-laden above preheating chamber 394 off-air and enter in siphunculus 232, the as-fired coal be 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 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 physical design of this primary heater unit 39, be to utilize the hot waste gas discharge burning from exhaust air chamber 391 after to heat air in preheating chamber 394, the as-fired coal reached falling into preheater 393 carries out preheating, can lower the temperature to discharging from exhaust air chamber 391 hot waste gas after burning again simultaneously, do not need to consume the extra energy, reach self UTILIZATION OF VESIDUAL HEAT IN object of the hot waste gas after to burning.
In addition, as shown in figure 11, this example also comprises preheating temperature monitor 903 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 monitored by industry control center 90, so arrange preheating temperature monitor 903 herein do not form restriction to this routine protection domain.
Section three, the as-fired coal after preheating regulates
As shown in Figure 5, Figure 6, as-fired coal surge bunker 3, as-fired coal surge bunker 3 is arranged on body of heater 91 and is positioned at preheater 393 bottom, the periphery of exhaust air chamber 391, as-fired coal surge bunker 3 comprise the upper and lower level gage of coal pocket 31, coal bunker 32,33, coal pocket thermometer 34, coal pocket discharge channel 35, coal pocket baiting valve 36.
As shown in Figure 5, Figure 6, preheater 393 bottom is connect above coal pocket 31, the upper and lower level gage 32,33 of coal bunker is located at top and the bottom of coal pocket 31 respectively, coal pocket thermometer 34 is positioned in the middle part of coal pocket 31, coal pocket discharge channel 35 is connected on the bottom of coal pocket 31 by coal pocket baiting valve 36, and coal pocket discharge channel 35 leads to coal heat decomposition stove coking chamber 61 (shown in Fig. 9).
In addition, as shown in figure 11: this example also comprises as-fired coal and regulates electric controller 904 for gathering coal bunker, lower level gage 32, the level signals of 33, the temperature signal of coal pocket thermometer 34, realize automatically controlling with to the opening and closing of coal pocket baiting valve 36, as-fired coal regulates electric controller 904 to be connected with upper industry control center 90 again, certainly from electric control theory, gather in this example on coal bunker, lower level gage 32, the level signals of 33, the temperature signal of coal pocket thermometer 34 also can directly gather by industry control center 90, coal pocket baiting valve 36 opening and closing directly controls by industry control center 90, electric controller 904 is regulated not form restriction to this routine protection domain so arrange as-fired coal herein.
This routine as-fired coal control method is:
1, the as-fired coal after preheating is injected coal pocket 31 first to store away in advance, when during needs are to coking chamber 61 during coal, industry control center 90 is opened coal pocket baiting valve 36 and inject as-fired 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 as-fired coal in coking chamber 61;
3, when the coal that level gage under coal bunker 33 detects in coal pocket 31 is not enough, blanking control valve 24 is opened at industry control center 90, to coal in coal pocket 31, when level gage on coal bunker 32 detects that the coal in coal pocket 31 is filled it up with, blanking control valve 24 is closed at industry control center 90, stop to coal pocket 31 coal, the as-fired coal played entering coking chamber 61 regulates.
As shown in Figure 5, Figure 6, coal pocket 31 top is also provided with coal pocket hot air discharge passage 37, siphunculus 232 is entered outside the off-air that coal pocket hot air discharge passage 37 leads to coal fine filter 23, dust-laden warm air above coal pocket 31 is entered outside off-air and is entered in siphunculus 232, is beneficial to smooth coal in coal pocket 31
Section four, enter the cooling of the as-fired coal before coking chamber
As shown in Figure 9, coal pocket discharge channel 35 is when to the coking chamber 61 note coal of coal heat decomposition stove, because coking chamber 61 top exists the raw gas produced in a large amount of pyrolysis of coal processes, the higher meeting of raw gas temperature carries out thermal conduction to coal pocket discharge channel 35 body and body of heater 91, as-fired coal is caused easily to lump in coal pocket discharge channel 35, hinder and note coal in coking chamber 61, thus need to cool as-fired coal.
As Fig. 9, shown in Figure 10, as-fired coal refrigerating unit 5 comprises air and enters siphunculus 57, air discharges siphunculus 51, air enters endless tube 56, air discharges endless tube 52, air enters arm 54, air exhaust outlet 53, cooling air channel 55, wherein, air enters siphunculus 57 and enters endless tube 56 with air, air discharge siphunculus 51 is discharged endless tube 52 with air and is communicated, air enters endless tube 56, air discharges the surrounding that endless tube 52 is separately positioned on body of heater 91, air enters endless tube 56 and air and discharges and endless tube 52 is connected to air respectively enters arm 54, air exhaust outlet 53, wherein air enters arm 54 and is connected on below cooling air channel 55, air exhaust outlet 53 is connected on the top of cooling air channel 55, coal pocket discharge channel 35 from cooling air channel 55 through leading to coking chamber 61.
As Figure 10, shown in Fig. 9, because this body of heater 91 is designed to annular, the coal pocket 31 being provided with 8 note coals in its surrounding is beneficial to and carries out even coal to coking chamber 61 surrounding, so cooling air channel 55 corresponding with the quantity of coal pocket discharge channel 35 be also 8, enter air successively enter endless tube 56 when air enters siphunculus 57 from air, air enters arm 54, cooling air channel 55, again from air exhaust outlet 53, air discharges endless tube 52, air is discharged in siphunculus 51 and is discharged, utilize in cooling air channel 55 and the as-fired coal in coal pocket discharge channel 35 is cooled, effectively prevent as-fired coal from luming in coal pocket discharge channel 35, realize in coking chamber 61, noting coal smoothly.
In addition, the inner side that coal pocket discharge channel 35 is mainly close to coking chamber 61 is larger by the heat affecting of raw gas, so the inner side-wall 351 of coal pocket discharge channel 35 is placed in cooling air channel 55, the outer side wall 352 of coal pocket discharge channel 35 exposes in atmosphere, natural air is utilized to cool, reduce the air quantity blasted in cooling air channel 55, thus save energy consumption.
Claims (4)
1. an as-fired coal dewatering unit for coal heat decomposition stove, is characterized in that: comprise dehydration support body, bucket elevator, waste gas water trap, coal fine filter, feed bin, fly-ash separator, chimney, as-fired coal transfer roller, described waste gas water trap and coal fine filter are set up in parallel and dewater on support body, and waste gas water trap comprises dehydrator shell, hot waste gas master enters pipe, the main discharge tracheae of dehydration waste gas, feeder, waste gas radiator element, dehydrator shell is a cavity housing, and feeder is arranged on above dehydrator shell, and described feeder includes hopper, pan feeding vibratory screening apparatus, blanking channel, blanking vibratory screening apparatus, pan feeding vibratory screening apparatus is set in material bin, scattered by middle part below material bin and be provided with multiple blanking channel, blanking vibratory screening apparatus is provided with again below blanking channel, be provided with at least one group of waste gas radiator element in dehydrator shell inside below feeder, the inside of waste gas radiator element is provided with hot waste gas admission passage, dehydration waste gas exhaust channel, hot waste gas admission passage and dehydration waste gas exhaust channel enter pipe with hot waste gas master respectively, the main discharge tracheae of dehydration waste gas communicates, described coal fine filter, comprise filter body, the outer top cover of strainer, strainer internal head cover, metal fiber filter, off-air enters siphunculus, dust funnel, siphunculus is discharged in off-air, off-air discharges siphunculus outward, filter body periphery is provided with the off-air leading to top from bottom and enters siphunculus, filter body inside is provided with dust funnel, discharging siphunculus in off-air 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, metal fiber filter is provided with between strainer internal head cover and the outer top cover of strainer, described feed bin is arranged on the below of waste gas water trap, coal fine filter, described bucket elevator is arranged on waste gas water trap place, and bucket elevator is connected with as-fired coal transfer roller, and described fly-ash separator is connected with the main discharge tracheae of dehydration waste gas, described chimney is connected with fly-ash separator.
2. the as-fired coal dewatering unit of a kind of coal heat decomposition stove according to claim 1, is characterized in that: the hot waste gas admission passage of described waste gas water trap and dehydration waste gas exhaust channel in the inside of waste gas radiator element in being arranged above and below.
3. the as-fired coal dewatering unit of a kind of coal heat decomposition stove according to claim 1, it is characterized in that: the waste gas radiator element of described waste gas water trap becomes the arrangement of three groups, upper, middle and lower, waste gas external form of cooling fin makes acute triangle upward, shift to install between upper group of waste gas radiator element and middle group of waste gas radiator element, namely the waste gas radiator element in group is just in time arranged between two adjacent waste gas radiator element in group, in like manner, lower group of waste gas radiator element is just in time arranged between two adjacent waste gas radiator element in middle group.
4. the as-fired coal dewatering unit of a kind of coal heat decomposition stove according to claim 1, is characterized in that: the off-air of described coal fine filter enters siphunculus and discharges siphunculus in off-air and become vertical angle to form cyclone structure in filter body.
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