CN103087743B - Device for preheating coal as fired and regenerating active coke by utilizing hot waste gas - Google Patents
Device for preheating coal as fired and regenerating active coke by utilizing hot waste gas Download PDFInfo
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- CN103087743B CN103087743B CN201210279428.5A CN201210279428A CN103087743B CN 103087743 B CN103087743 B CN 103087743B CN 201210279428 A CN201210279428 A CN 201210279428A CN 103087743 B CN103087743 B CN 103087743B
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Abstract
The invention discloses a device for preheating coal as fired and regenerating active coke by utilizing hot waste gas. The device comprises a preheating device and an active coke regenerator, wherein the coal preheating device comprises a furnace body, a waste gas chamber, at least more than one waste gas preheating passage and preheaters; the furnace body is divided into inner, medium and outer walls; the inner wall forms the waste gas chamber; a waste gas collecting annular passage is formed between the medium wall and the outer wall; a main waste gas outlet is arranged in the waste gas collecting annular passage; the waste gas preheating passages pass through the inner and medium walls to communicate the waste gas chamber with the waste gas collecting annular passage and separate the space between the inner wall and the medium wall into a plurality of preheating chambers; the preheaters are respectively arranged in the preheating chambers; hot waste gas inlet passages are arranged at the bottom of the waste gas chamber; the active coke regenerator mainly comprises a hot waste gas evaporating pipe network; the waste gas evaporating pipe network is arranged in the cavity of a regenerator shell as an independent loop; a hot waste gas inlet pipe is arranged at the bottom of the waste gas evaporating pipe network and a hot waste gas exhaust pipe is arranged at the top of the waste gas evaporating pipe network; and the main waste gas outlet is communicated with the hot waste gas inlet pipe via a pipeline.
Description
Technical field
The present invention relates to one and enter the preheating of stove coal and active coke regeneration device, particularly a kind of hot waste gas enters the preheating of stove coal and active coke regeneration device.
Background technology
Coal heat decomposition stove (pit kiln) in the market mostly adopts intermittent type coking, enter stove coal proportioning, dewater, enter coal, preheating, charing, burnt upgrading, dry each processing step such as to put out relatively independent, can not produce continuously, production efficiency is low; In addition, the raw gas producing in pyrolysis of coal process is containing a lot of useful compositions, as H
2s, HCH etc. sour gas, NH
3the organism such as alkaline gas, tar class, benzene class, naphthalene class, washing oil class, do not have the complete complete technique that raw gas derivation, reclaiming clean are used.
This impel the inventor to explore to create a set of complete Continuous coking and to raw gas derive, the in addition complete technique of recycle of reclaiming clean.
Summary of the invention
The invention provides a kind of hot waste gas and enter the preheating of stove coal and active coke regeneration device, this device first utilizes the waste gas after burning first to carry out preheating to entering stove coal, the own waste heat of waste gas after recycling preheating evaporates heating to the saturated active coke in raw gas reclaiming clean process, both reached the own waste heat of waste gas itself had been utilized, do not need again to increase extra power consumption device, save coking cost.
Realizing the technical scheme that above-mentioned purpose takes is:
A kind of hot waste gas enters the preheating of stove coal and active coke regeneration device, comprises primary heater unit, activated coke revivifier; Described coal primary heater unit, is arranged on into device for coal below, and is positioned at the top of coal heat decomposition stove, includes 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, assemble in circuit and be provided with waste gas primary outlet at waste gas, 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, entering waste gas by heating by the exhaust gases passage assembles in circuit, finally assemble the waste gas primary outlet discharge of circuit from waste gas, the hot waste gas after burning can carry out thermal conduction to heating by the exhaust gases passage, internal layer body of wall, internal layer body of wall in discharge process; Described activated coke revivifier comprises revivifier housing, hot waste gas evaporation pipe network, unsaturated activated coke recovery bin, revivifier housing is a cavity container, revivifier case top is provided with saturated active coke and enters gate valve, bottom is provided with unsaturated activated coke discharge gate valve, unsaturated activated coke discharge gate valve below is provided with unsaturated activated coke recovery bin, is also provided with evaporation exhaust of oil pipe on revivifier housing; Waste gas evaporation pipe network becomes independent loop to be arranged in revivifier housing chamber, and the bottom of waste gas evaporation pipe network is provided with hot waste gas and enters pipe, and top is provided with hot waste gas delivery pipe; The waste gas primary outlet of the waste gas gathering circuit of described primary heater unit enters pipe by the hot waste gas of the bottom of the hot waste gas evaporation pipe network of pipeline and activated coke revivifier and communicates.
Preferably, described waste gas evaporation pipe network middle part is provided with waste gas circulation pipeline, waste gas circulation pipeline stretch out revivifier housing outer and hot waste gas blower fan be connected.
Preferably, also comprise tubular heat exchanger, described tubular heat exchanger comprises heat exchange housing, metal heat-exchange pipe network, hot waste gas admission passage, heat exchange waste gas exhaust channel, in heat exchange housing, form waste gas heat radiation chamber, hot waste gas admission passage and heat exchange waste gas exhaust channel are separately positioned on heat exchange housing and with waste gas heat radiation chamber and communicate, metal heat-exchange pipe network is placed in waste gas heat radiation chamber, metal heat-exchange pipe network comprises that air enters pipe and Bas Discharged pipe, and air enters pipe and Bas Discharged pipe stretches out respectively heat exchange hull outside; The waste gas of described primary heater unit is assembled the waste gas primary outlet of circuit and the hot waste gas admission passage of tubular heat exchanger communicates by pipeline, and the heat exchange waste gas discharge main channel of tubular heat exchanger enters pipe by pipeline with the hot waste gas of the hot waste gas generating tube sieve bottom of activated coke revivifier and communicates.
Feature of the present invention is first to utilize the waste gas after burning first to carry out preheating to entering stove coal, the own waste heat of waste gas after recycling preheating evaporates heating to the saturated active coke in raw gas reclaiming clean process, both reached the own waste heat of waste gas itself had been utilized, do not need again to increase extra power consumption device, save coking cost.
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 waste gas water trap schematic diagram (A place enlarged view in Fig. 1) involved in the present invention;
Fig. 3 is coal fine filter one embodiment schematic top plan view involved in the present invention;
Fig. 4 is another embodiment schematic top plan view of coal fine filter involved in the present invention;
Fig. 5 is the devices such as the preheating in the present invention and enter stove coal and enter device for coal assembling cross-sectional schematic;
Fig. 6 is C place enlarged view in Fig. 5;
Fig. 7 be of the present invention enter preheater sectional view in stove coal primary heater unit;
Fig. 8 is a-a place sectional view in Fig. 6;
Fig. 9 is the involved in the present invention stove coal refrigerating unit schematic diagram that enters;
Figure 10 is b-b place sectional view in Fig. 9;
Figure 11 is electrical connection schematic diagram involved in the present invention;
Figure 12 be of the present invention enter device and the activated coke revivifier connection diagram such as stove coal preheating.
Embodiment
A kind of hot waste gas of the present invention enters the specific embodiment of the preheating of stove coal and active coke regeneration device and mainly in following Part III, Part V, introduces in detail.
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, the entrance 1321 that enters siphunculus 132 in off-air enters 1341 higher than what discharge 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 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 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.
Part IV enters stove pyrolysis of coal (charing heating, burnt upgrading, dry coke quenching)
First segment enters stove pyrolysis of coal charing heating
Enter the heated pyrolysis charring that carries out in the coking chamber that stove coal enters coal heat decomposition stove, the purified gas that the raw gas producing in profit pyrolysis of coal process carries out after reclaiming clean carries out combustion heating, and utilizes the waste gas after burning to carry out the dry generation high-temperature combustible gas body combustion heating again that puts out.
The burnt upgrading of second section
Because coal carries out the coke forming after pyrolysis in coking chamber, the existence inequality of being heated, the situation that coke briquette grain size is irregular, preferably provide certain temperature and time to coke, make fully to contact between coke, mutually carry out heat transmission, this just need to carry out burnt upgrading, utilize the waste heat of high temperature combustible exhaust gas itself that insulation institute's heat requirement and temperature are provided, the high temperature combustible exhaust gas temperature particularly just having entered is just applicable to burnt upgrading between 1000 DEG C～1100 DEG C, make coke retain certain hour in burnt upgrading chamber, fully contact between coke briquette grain, carry out each other heat transmission, reach evenly object of coke button size.
Section three, quirk bow
The laying of various pipelines when providing support, is provided to interior burning heater again in the effect of quirk bow.
Section four, dry coke quenching
Coke temperature after upgrading is higher, generally all at 1000 DEG C～1100 DEG C, need to carry out cooling could convenience to high temperature coke and carries and store, and need to carry out dry putting out.
Section five, continuous coking apapratus
Comprehensively above-mentioned, the feature of this routine Continuous coking is, by pyrolysis of coal charing, upgrading, the dry process integration that puts out in the hot body of heater of same coal, make charing, upgrading, dry putting out be able to continuous realization, overcome the discontinuous production efficiency of existing intermittent type coking technology technique low, how required the assorted plant area of equipment be large, the problem that human cost is high.
The comprehensive cyclic utilization of Part V, pyrolysis of coal gas
Chapter 1, the reclaiming clean utilization of raw gas (derivation, condensation, change are produced)
First segment raw gas take-up gear
The raw gas producing in pyrolysis of coal process is containing a lot of useful compositions, as H
2s, HCH etc. sour gas, NH
3the organism such as alkaline gas, tar class, benzene class, naphthalene class, washing oil class, need to derive to utilize raw gas
Second section raw gas condensing works
Higher from raw gas export mouth discharge raw gas temperature,, need to use raw gas condensing works and carry out cooling to high temperature raw gas changing antenatal conveying for the ease of high temperature raw gas.
Section three, the reclaiming clean of raw gas
Raw gas after ammoniacal liquor sprays is transported to gas-liquid separation device together with the mixed solution of coal tar and ammoniacal liquor through effuser and carries out gas-liquid separation, in mixed solution after gas-liquid separation, contain multiple useful organic component and refine other auxiliary product for industry as carbolic oil, naphtalene oil, washing oil, carbolineum etc., coal gas after gas-liquid separation is after air cooling cooling, after dry back receiving apparatus purifies recovery, become purified gas, purified gas can store for burning.
Device for raw gas reclaiming clean mainly comprises activated coke dry method withdrawer, activated coke bucket elevator, activated coke revivifier, cut tower, oil gas air cooler.Cooling raw gas is through carrying out charcoal absorption in activated coke dry method withdrawer, saturated gac falls into saturated active coke storage silo, send into activated coke revivifier through saturated activity charcoal bucket elevator and evaporate regeneration, unsaturated activated coke after evaporation falls into unsaturated activated coke recovery bin, again send in activated coke dry method withdrawer and enter absorption through unsaturated activated coke bucket elevator, so repeatedly carry out, the purified gas after absorption is transported to combustion heater by purified gas output tube and burns.
As shown in figure 12, above-described activated coke revivifier 47 comprises revivifier housing 471, hot waste gas evaporation pipe network 472, unsaturated activated coke recovery bin 476, revivifier housing 471 is a cavity container, revivifier housing 471 tops are provided with saturated active coke and enter gate valve 475, bottom is provided with unsaturated activated coke discharge gate valve 474, unsaturated activated coke discharge gate valve 474 belows are provided with unsaturated activated coke recovery bin 476, are also provided with evaporation exhaust of oil pipe 473 on revivifier housing 471; 472 one-tenth independent loops of waste gas evaporation pipe network are arranged in revivifier housing 471 chambeies, the bottom of waste gas evaporation pipe network 472 is provided with hot waste gas and enters pipe 477, top is provided with hot waste gas delivery pipe 479, in order to increase the flow velocity of hot waste gas at waste gas evaporation pipe network 472, be provided with waste gas circulation pipeline 478 at waste gas evaporation pipe network 472 middle parts, waste gas circulation pipeline 478 stretch out revivifier housing 471 outer and hot waste gas blower fan (figure is not depending on going out) be connected.
Section four, raw gas is derived condensation and reclaiming clean and burning
Introduce raw gas is derived to purified gas after condensation and reclaiming clean for right burning by above first, second and third joint of this chapter, the pyrolysis of coal being mainly in the coking chamber of coal heat decomposition stove provides the source of holding, so raw gas is derived condensation and reclaiming clean device and method by first, second and third joint introduction of comprehensive Part V chapter 1, and the content that enters stove pyrolysis of coal charing heating of chapter 4 first segment introduction draws a kind of coal heat decomposition stove raw gas derivation condensation and reclaiming clean and combustion unit and method.
First segment raw gas purifies the purified gas burning after reclaiming
Raw gas is through purifying after recovery, part purified gas be transported to this example above introduce enter combustion heater in the outer gas-operated thermal bath facility described in stove pyrolysis of coal charing part and the combustion heater in interior burning heater burns, provide thermal source to pyrolysis of coal.
Dry the putting out of waste gas after the burning of second section purified gas
Purified gas not burning cmpletely in the combustion heater in gas-operated thermal bath facility and the combustion heater in interior burning heater outside, utilize not cmpletely combustion exhaust high temperature coke is carried out to the dry cooling of putting out, generation water-gas can react when the moisture content in combustion exhaust does not contact with high temperature coke cmpletely, take away again remaining volatile combustible gases after high temperature coke upgrading simultaneously, the final high-temp waste gas that contains inflammable gas composition that forms, specifically see the introduction of above dry coke quenching chapters and sections, repeat no more here.
Section three, the burnt upgrading of high temperature combustible exhaust gas after dry putting out
High temperature combustible exhaust gas temperature after dry putting out can reach 1000 DEG C～1100 DEG C, and burnt upgrading just in time need to be incubated upgrading at this temperature section, specifically how to be incubated upgrading, specifically sees and the introduction of above dry coke quenching chapters and sections repeats no more here.
Section four, the tonifying Qi burning again of the high temperature combustible exhaust gas after dry putting out.
High temperature combustible exhaust gas is externally acting in STRENGTH ON COKE upgrading process, temperature can reduce, can drop to 900 DEG C～1000 DEG C, and pyrolysis of coal charing is temperature required higher in coking chamber, on average all at 1400 DEG C～1500 DEG C, carry out combustion heating so fill into air for the first time to high temperature combustible exhaust gas, because coking chamber height is higher, and combustiblecomponents exists a certain amount of in high temperature combustible exhaust gas, so need to increase and have the 3rd combustion heater at interior burning heater middle part, the 4th combustion heater is to supplement the required heat of pyrolysis of coal, finally fill into for the second time again air on interior burning heater top and carry out again abundant combustion heating by high temperature combustible exhaust gas, both reached to pyrolysis of coal and provided outside thermal source acting, can allow again high temperature combustible exhaust gas fully burn, reduce the pollution to atmospheric environment, specifically see above enter narration in stove pyrolysis of coal charing, here repeat no more.
Section five, the hot waste gas after tonifying Qi burning enters the preheating of stove coal
Waste gas after the quenching waste gas heater burning of interior burning heater, is discharged in exhaust air chamber, then carries out preheating by coal primary heater unit to entering stove coal.
Section six, afterburning air heating
Waste gas after the preheating of coal preheater is transported to tubular heat exchanger and heats entering air in quenching waste gas heater, do not need extra thermal source to air heating, do not need to increase additional cost, both played the waste heat of the hot waste gas after the preheating of coal preheater had further been utilized, can give in quenching waste gas heater and fill into warm air again, high temperature combustible exhaust gas in quenching waste gas heater is fully burnt.
As shown in figure 12, described tubular heat exchanger 40, comprise heat exchange housing 401, metal heat-exchange pipe network 403, hot waste gas admission passage 407, heat exchange waste gas exhaust channel 404, the interior formation waste gas heat radiation of heat exchange housing 401 chamber 402, hot waste gas admission passage 407 and heat exchange waste gas exhaust channel 404 are separately positioned on heat exchange housing 401 and with waste gas heat radiation chamber 402 and communicate, heat exchange waste gas exhaust channel 404 is discharged main channel 405 with heat exchange waste gas and is connected, metal heat-exchange pipe network 403 is placed in waste gas heat radiation chamber 402, metal heat-exchange pipe network 403 comprises that air enters pipe and Bas Discharged pipe, air enters pipe and Bas Discharged pipe stretches out respectively heat exchange housing 401 outsides.
This routine afterburning air heating Method And Principle is: the master of interior burning heater, waste gas after secondary internal-quirk burning enters exhaust air chamber 391 from the bottom admission passage 3911 of exhaust air chamber 391 successively, after entering the preheating of stove coal, enter waste gas gathering circuit 395 by heating by the exhaust gases passage 392, assemble the waste gas primary outlet 3951 of circuit 395 discharges from waste gas, temperature is now generally all 1000 DEG C of left and right, enter into waste gas heat radiation chamber 402 by hot waste gas admission passage 407 again and carry out heat exchange with metal heat-exchange pipe network 403, both played the waste heat of hot waste gas had further been utilized, can heat again afterburning air, the master of burning heater in promoting, the high temperature combustible exhaust gas of secondary internal-quirk fully burns.
Section seven, enter stove coal dewatering
Hot waste gas is through to after afterburning air heating, and temperature decreases, and generally can drop to below 800 DEG C, and for the relatively high hot waste gas of such temperature, a part can be used for to entering stove coal dewatering.
Section eight, saturated active coke regeneration heating
Hot waste gas is through to after afterburning air heating, and temperature decreases, and generally can drop to below 800 DEG C, and for the relatively high hot waste gas of such temperature, another part can be used for to saturated active coke regeneration heating.
Comprehensive above Part III content, the reclaiming clean of Section of three raw gas of Part V chapter 1, Section of six afterburning air heating of Part V chapter 2 and In this Section show that a kind of hot waste gas enters the preheating of stove coal and active coke regeneration device and method.
As shown in figure 12, hot waste gas enters the preheating of stove coal and active coke regeneration device, mainly comprises primary heater unit 39, and activated coke revivifier 47 also comprises tubular heat exchanger 40; The concrete structure of described primary heater unit 39 is shown in that Part III second section enters the content introduction of stove coal preheating; The concrete structure of described activated coke revivifier 47 is shown in the content introduction of the reclaiming clean of Section of three raw gas of Part V chapter 1; The concrete structure of described tubular heat exchanger 40 is shown in the content introduction of Section of six afterburning air heating of Part V chapter 2, repeats no more here.
Here only explain for the relation between them, as shown in figure 12, the waste gas primary outlet 395 that the waste gas of the primary heater unit 39 of primary heater unit 39 is assembled circuit 395 is entered and is managed 477 and communicate by the hot waste gas of the bottom of the hot waste gas evaporation pipe network 472 of pipeline and activated coke revivifier 47; Make the waste gas after the major and minor internal-quirk burning of interior burning heater enter exhaust air chamber 391 from the bottom admission passage 3911 of exhaust air chamber 391 successively, after entering the preheating of stove coal, enter waste gas gathering circuit 395 by heating by the exhaust gases passage 392, assemble the waste gas primary outlet 3951 of circuit 395 discharges from waste gas, enter in the hot waste gass evaporations pipe network 472 that pipe 477 enters activated coke revivifier 47 by hot waste gas, it is unsaturated activated coke that the saturated active coke in revivifier housing 471 is evaporated to thermal regeneration.
Further, the waste gas of described primary heater unit 39 is assembled the waste gas primary outlet 3951 of circuit 395 and the hot waste gas admission passage 407 of tubular heat exchanger 40 communicates by pipeline, and the heat exchange waste gas discharge main channel 405 of tubular heat exchanger 40 enters pipe 477 by the hot waste gas of hot waste gas evaporation pipe network 472 bottoms of pipeline and activated coke revivifier 47 and communicates.
This routine a kind of hot waste gas enters the preheating of stove coal and reactive coke regeneration method, and step is:
(1), the 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 carry out thermal conduction to heating by the exhaust gases passage 392, internal layer body of wall 913, internal layer body of wall 912 in discharge process, air in preheating chamber 394 is heated, 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;
(2) waste gas that enters into that, the hot waste gas after cooling is entered to pipe 477 by the hot waste gas of activated coke revivifier 47 evaporates pipe network 472, evaporating pipe network 472 by waste gas, the saturated active coke in revivifier housing 471 is carried out to heating evaporation is unsaturated activated coke, and the hot waste gas delivery pipe 479 that finally evaporates pipe network 472 by waste gas discharges.
Further, a step in increasing between (1), (2), hot waste gas is entered into waste gas heat radiation chamber 402 by the hot waste gas waste gas admission passage 407 of tubular heat exchanger 40 and carry out heat exchange with metal heat-exchange pipe network 403, while air enters pipe from the air of metal heat-exchange pipe network and enters, warm air is discharged from Bas Discharged pipe again, both played the waste heat of hot waste gas had further been utilized, and can heat again afterburning air.
Part VI: pyrolysis of coal automatic control device
Comprehensively above-mentioned, pyrolysis of coal automatic control device comprises that industry control center 90 and above introduction connect thermometer and motor with industry control center.
Pyrolysis of coal automation control method comprises entering stove coal dewatering, enter the preheating of stove coal, entering the controls such as the adjusting of stove coal coal, the burning of outer gas-operated thermal bath facility, the commutation of gas reversing system, the adjusting of raw gas pressure of above introduction.
Part VII: thermal cycling continuous and automatic coal heat decomposition stove
Comprehensively above-mentioned, thermal cycling continuous and automatic coal heat decomposition stove comprise above concrete introduction enter that stove coal enters coal, preheating, coal, cooling, charing, burnt upgrading, dryly puts out, raw gas derivation etc.
Claims (2)
1. hot waste gas enters the preheating of stove coal and an active coke regeneration device, it is characterized in that: comprise primary heater unit, activated coke revivifier, also comprise tubular heat exchanger; Described coal primary heater unit, is arranged on into device for coal below, and is positioned at the top of coal heat decomposition stove, includes body of heater, exhaust air chamber, at least one 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, assemble in circuit and be provided with waste gas primary outlet at waste gas, 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, entering waste gas by heating by the exhaust gases passage assembles in circuit, finally assemble the waste gas primary outlet discharge of circuit from waste gas, 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; Described tubular heat exchanger comprises heat exchange housing, metal heat-exchange pipe network, hot waste gas admission passage, heat exchange waste gas exhaust channel, in heat exchange housing, form waste gas heat radiation chamber, hot waste gas admission passage and heat exchange waste gas exhaust channel are separately positioned on heat exchange housing and with waste gas heat radiation chamber and communicate, metal heat-exchange pipe network is placed in waste gas heat radiation chamber, metal heat-exchange pipe network comprises that air enters pipe and Bas Discharged pipe, and air enters pipe and Bas Discharged pipe stretches out respectively heat exchange hull outside; Described activated coke revivifier comprises revivifier housing, hot waste gas evaporation pipe network, unsaturated activated coke recovery bin, revivifier housing is a cavity container, revivifier case top is provided with saturated active coke and enters gate valve, bottom is provided with unsaturated activated coke discharge gate valve, unsaturated activated coke discharge gate valve below is provided with unsaturated activated coke recovery bin, is also provided with evaporation exhaust of oil pipe on revivifier housing; Waste gas evaporation pipe network becomes independent loop to be arranged in revivifier housing chamber, and the bottom of waste gas evaporation pipe network is provided with hot waste gas and enters pipe, and top is provided with hot waste gas delivery pipe; The waste gas of described primary heater unit is assembled the waste gas primary outlet of circuit and the hot waste gas admission passage of tubular heat exchanger communicates by pipeline, and the heat exchange waste gas discharge main channel of tubular heat exchanger enters pipe by pipeline with the hot waste gas of the hot waste gas generating tube sieve bottom of activated coke revivifier and communicates.
2. enter the preheating of stove coal and active coke regeneration device according to a kind of hot waste gas of claim 1, it is characterized in that: described waste gas evaporation pipe network middle part is provided with waste gas circulation pipeline, waste gas circulation pipeline stretch out revivifier housing outer and hot waste gas blower fan be connected.
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| CN202786126U (en) * | 2012-08-06 | 2013-03-13 | 山西鑫立能源科技有限公司 | Hot waste gas as-fired coal preheating and active coke regenerating device |
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| GB470275A (en) * | 1936-02-14 | 1937-08-12 | Didier Werke Ag Fa | Improvements in the production of gas from carbonaceous fuels |
| CN1381306A (en) * | 2002-01-23 | 2002-11-27 | 国家电力公司南京电力自动化设备总厂 | Moving desorptive equipment for activated coke |
| CN101073767A (en) * | 2006-05-19 | 2007-11-21 | 张大伟 | Method for treating saturated active coke |
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