CN202786124U - Coal as fired preheating device of coal pyrolysis furnace - Google Patents

Abstract

The utility model discloses a coal as fired preheating device of a coal pyrolysis furnace. The coal as fired preheating device comprises a furnace body, a waste gas chamber, at least one waste gas preheating channel and preheaters; the furnace body consists of an inner-layer wall, a middle-layer wall and an outer-layer wall, the waste gas chamber is formed on the inner-layer wall, a waste gas gathering loop is formed between the middle-layer wall and the outer-layer wall, a main waste gas outlet is arranged in the waste gas gathering loop, the waste gas preheating channel communicates the waste gas chamber with the waste gas gathering loop after penetrating through the inner-layer wall and the middle-layer wall, the inner-layer wall and the middle-layer wall are divided into a plurality of preheating chambers, and the preheaters are arranged in the preheating chambers; and a hot waste gas entering channel is arranged at the bottom of the waste gas chamber, burnt hot waste gas enters from the hot waste gas entering channel and enters the waste gas gathering loop through the waste gas preheating channel, and is finally exhausted from the main waste gas outlet of the waste gas gathering loop. According to the coal as fired preheating device, coal as fired falling in the preheaters is preheated by utilizing hot waste gas, and simultaneously the hot waste gas can be cooled, so that the purpose of utilizing self residual heat of the hot waste gas can be achieved.

Description

A kind of coal heat decomposition stove enter stove coal primary heater unit

Technical field

The utility model relates to a kind of primary heater unit, particularly a kind ofly utilizes the hot waste gas after the coal heat decomposition stove burning to carry out primary heater unit to entering the stove coal.

Background technology

Wish in the pyrolysis of coal technology that entering the stove coal kept certain temperature before entering the coal heat decomposition stove coking chamber, just can produce the coke of better grade.

Yet coal heat decomposition stove in the market (pit kiln) mostly adopts intermittent type coking, coal heat decomposition stove can produce a large amount of hot waste gass, this hot waste gas often directly to airborne release, does not utilize hot waste gas fully, can temperature reduce in the process course of conveying and enter the stove coal.

This impels the inventor to think deeply to develop and a kind ofly can utilize the hot waste gas after the coal heat decomposition stove burning to carry out primary heater unit to entering the stove coal.

Summary of the invention

What the utility model provided a kind of coal heat decomposition stove enters stove coal primary heater unit, the hot waste gas that this primary heater unit takes full advantage of after the coal heat decomposition stove burning heats entering the stove coal, and not needing increases extra heating setting, simple in structure, heats is good, saves the coking cost.

The utility model is achieved through the following technical solutions:

A kind of coal heat decomposition stove enter stove coal primary heater unit, be installed in into the device for coal below, and be positioned at the top of coal heat decomposition stove, include body of heater, exhaust air chamber, at least one above heating by the exhaust gases passage, preheater; That body of heater is divided into is interior, in, outer three layers of body of wall, internal layer body of wall form exhaust air chamber, form waste gas between middle level body of wall and the outer body of wall and assemble circuit, in waste gas gathering circuit, be provided with the waste gas primary outlet, that the heating by the exhaust gases passage passes is interior, the middle level body of wall is assembled circuit with exhaust air chamber and waste gas and is communicated with, and will being separated into several preheating chambers between internal layer body of wall and the middle level body of wall, preheater places respectively each preheating chamber; The bottom of exhaust air chamber is provided with the hot waste gas admission passage, hot waste gas after the burning enters from the hot waste gas admission passage, entering waste gas by the heating by the exhaust gases passage assembles in the circuit, assemble at last the waste gas primary outlet discharge of circuit from waste gas, the hot waste gas after the 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.

Preferably, described preheater comprises that cylindrical shell, taper divide to device, opens wide funnel, pre-hot coal blanking road, and taper divides to device and unlimited funnel arranges on cylindrical shell successively from top to bottom in groups.

Preferably, reserve certain space between described preheater and the preheating chamber.

Preferably, also comprise coal fine filter, described coal fine filter comprises filter body, the outer top cover of strainer, the strainer internal head cover, the steel fiber filtering net, off-air enters siphunculus, the dust funnel, discharge siphunculus in the off-air, off-air is discharged siphunculus outward, the filter body periphery is provided with the off-air that leads to the top from the bottom and enters siphunculus, be provided with the dust funnel in filter body inside, the dust funnel leads to into the stove coal bunker, discharging siphunculus in the off-air is arranged on the strainer internal head cover, and be positioned at above the dust funnel, the entrance of discharging siphunculus in the off-air is lower than the entrance that off-air enters siphunculus, off-air is discharged siphunculus outward and is arranged on the outer top cover of strainer, is provided with the steel fiber filtering net outside strainer internal head cover and strainer between the top cover; Described preheating chamber is provided with preheating off-air outlet duct, the off-air that preheating off-air outlet duct leads to coal fine filter enters siphunculus, the hot off-air of dust-laden above the preheating chamber is entered off-air enter in the siphunculus, be beneficial to the stove coal and drop into smoothly preheating in the preheating chamber.

Preferably, described body of heater is provided with and leads to the preheating chamber thermometer hole, and the preheating chamber thermometer is arranged on the temperature variation that the outlet of preheating chamber thermometer hole is used for the monitoring preheating chamber; Body of heater is provided with and leads to the exhaust air chamber thermometer hole, and the exhaust air chamber thermometer is arranged on the temperature variation that the outlet of waste gas thermometer hole is used for the monitoring exhaust air chamber.

Preferably, also comprise the industry control center, described industry control center links to each other with the exhaust air chamber thermometer with monitoring preheating chamber thermometer and is used for temperature monitoring.

Preferably, also comprise the preheating temperature monitor, described preheating temperature monitor is connected between industry control center and monitoring preheating chamber thermometer and the exhaust air chamber thermometer, and the industry control center is carried out temperature by the preheating temperature monitor to monitoring preheating chamber thermometer and exhaust air chamber thermometer and monitored.

Preferably, the top of described exhaust air chamber arranges upper observation hole.

The utility model enters the unique texture design of stove primary heater unit, be to utilize the hot waste gas of from exhaust air chamber, discharging after burning that the preheating chamber Air is heated, the stove coal that enters that reaches falling into preheater carries out preheating, can lower the temperature to the hot waste gas of from exhaust air chamber, discharging after burning again simultaneously, do not need to consume the extra energy, reach self the UTILIZATION OF VESIDUAL HEAT IN purpose to the hot waste gas after the burning.

Description of drawings

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

Fig. 1 is that the related stove coal dewatering device that enters of stove coal primary heater unit that enters of the utility model coal heat decomposition stove is assembled synoptic diagram;

Fig. 2 is A place enlarged view among Fig. 1;

Fig. 3 be the utility model coal heat decomposition stove enter the related coal fine filter of stove coal primary heater unit one embodiment schematic top plan view;

Fig. 4 be the utility model coal heat decomposition stove enter another embodiment schematic top plan view of the related coal fine filter of stove coal primary heater unit;

Fig. 5 is entering stove coal primary heater unit and entering before coal and advance device for coal and continuously afterwards enter the device assembling cross-sectional schematic such as stove coal adjusting of this coal heat decomposition stove of the utility model;

Fig. 6 is C place enlarged view among Fig. 5;

Fig. 7 is the preheater sectional view in the stove coal primary heater unit of entering of the utility model coal heat decomposition stove;

Fig. 8 is a-a place sectional view among Fig. 6;

Fig. 9 be the utility model coal heat decomposition stove enter stove coal primary heater unit related enter stove coal refrigerating unit synoptic diagram;

Figure 10 is b-b place sectional view among Fig. 9;

Figure 11 be the utility model coal heat decomposition stove enter the related electrical connection synoptic diagram of stove coal primary heater unit.

Embodiment

The specific embodiment that enters stove coal primary heater unit of the utility model coal heat decomposition stove is mainly introduced in following third part second section in detail.

First part enters stove coal proportioning and preparation

A kind of coal heat decomposition stove that the utility model is related can enter stove coal proportioning according to different, obtains the different coke of grade.

Following steps: 1) select 5 kinds of different coals, they are respectively bottle coal, rich coal, coking coal, 1/3rd coking coal, lean coal.2) bottle coal 20%～40% wherein; Rich coal 10%～20%; Coking coal 10%～20%; / 3rd coking coal 15%～30%; Lean coal 10%～15%, mix first the fragmentation of then sieving, until reaching, crushed particles is formed into the stove coal below the 5mm, certainly the utility model coal heat decomposition stove to other proportioning and granular size to enter the stove coal applicable equally, do not consist of the required restriction that enters the stove coal dust of the utility model coal heat decomposition stove, just by above entering stove coal proportioning and can reaching more than 40% the weakly caking coal amount of allocating into of lifting, reduce the coke that the cost that enters the stove coal can obtain again better quality simultaneously, had fine competitive power in market.

Second section enters the stove coal dewatering

Pit kiln in the market mostly adopts intermittent type coking, enters the stove coal charge and is wet coal, so power consumption has increased the cost of coking, enters dewatering of stove coal to what enter this coal heat decomposition stove in advance, plays energy-saving and cost-reducing effect.

As shown in Figure 1: describedly enter stove coal dewatering device 1 and comprise 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, enter stove coal transfer roller 17.

Such as Fig. 1, shown in Figure 2: waste gas water trap 12 comprises dehydrator shell 121, the hot waste gas master enters pipe 122, dehydration waste gas master discharges tracheae 123, feeder 124, waste gas radiator element 125, above dehydrator shell 121, be provided with feeder 124, below dehydrator shell 121 inner feeders 124, 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 the hot waste gas master respectively, dehydration waste gas master discharges tracheae 123 and communicates, hot waste gas admission passage 1251 and dehydration waste gas exhaust channel 1252 are in the inside of waste gas radiator element 125 up and down to be arranged, and is beneficial to the drying and dehydrating into the 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 the material bin 1241, scattered by the middle part and be provided with a plurality of blanking channels 1243 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 purpose of design is more even in order to allow the stove coal distribute above waste gas radiator element 125 like this.

As shown in Figure 2: the three groups of arrangements in 125 one-tenth upper, middle and lower of waste gas radiator element, waste gas radiator element 125 profiles are made acute triangle up, shift to install between upper group of waste gas radiator element 125 and middle group of waste gas radiator element 125, waste gas radiator element 125 namely in the group just in time is arranged between the two adjacent waste gas radiator element 125 in the group, in like manner, lower group of waste gas radiator element 125 just in time is arranged between the two adjacent waste gas radiator element 125 in middle group, and purpose is for the drying area that is added to the stove coal, is beneficial to into coal and disperses landing.

Such as Fig. 1, Fig. 2, shown in Figure 3: that coal bunker 14 is set below waste gas radiator element 125, put at coal bunker 14 and to be provided with coal fine filter 13, our image is called the coal dust respiratory organ, coal fine filter 13 mainly comprises filter body 131, enter siphunculus 132 in the off-air, dust funnel 133, discharge siphunculus 134 in the off-air, off-air is discharged siphunculus 135 outward, enter siphunculus 132 in the off-air that leads to the top from the bottom filter body 131 peripheral being provided with, 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 discharge siphunculus 134 in the off-air, the entrance 1321 that enters siphunculus 132 in the off-air is higher than the entrance 1341 of discharging siphunculus 134 in the off-air, discharging siphunculus 134 in the off-air is arranged on the strainer internal head cover 137, off-air is discharged siphunculus 135 outward and is arranged on the outer top cover 138 of strainer, is provided with steel fiber filtering net 136 outside strainer internal head cover 137 and strainer between the top cover 138.

As shown in Figure 3: enter siphunculus 132 in the off-air and be arranged in the filter body 131, enter 134 one-tenth vertical angles of siphunculus 132 and off-air interior discharge siphunculus in the off-air at filter body 131 interior formation cyclone structures.

As shown in Figure 1: fly-ash separator 15 connects dehydration waste gas master and discharges tracheae 123, fly-ash separator 15 is existing dedusting technologies, fly-ash separator 15 comprises shell of dust remover 151, dust settling chamber 152, dehydration waste gas master discharges tracheae 123 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, be provided with sprinkler head 154 above shell of dust remover 151 interior dust settling chambers, dehydration waste gas master discharges tracheae 123 and submerges in the water in the dust settling chamber 152.

Such as Fig. 1; shown in Figure 2: hot waste gas enters the waste gas admission passage 1251 that tracheae 122 enters waste gas radiator element 125 inside by the hot waste gas master; dehydration waste gas exhaust channel 1252 by waste gas radiator element 125 inside enters dehydration waste gas master and discharges tracheae 123 again; discharge from chimney 16 after cleaning through the water layer in the dust settling chamber 152 again; flyash is stayed in the water layer and is regularly discharged by flyash delivery pipe 153 in the hot waste gas; both played hot waste gas had been purified; can reduce the hot waste gas exhaust temperature again; be beneficial to air draft; protection induced draft fan 18; reach the purpose 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 the burning enters tracheae 122 typical temperatures at 700 ℃～800 ℃ entering the hot waste gas master, utilize the waste heat of hot waste gas self that waste gas radiator element 125 is heated, can lower the temperature to the hot waste gas after the burning, thereby the stove coal that enters through waste gas radiator element 125 is dewatered, can allow again the water ratio of stove coal below 1%, reach the effective utilization to the hot waste gas after the 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, enters the bottom that stove coal transfer roller 17 is arranged on coal bunker 14.

As shown in figure 11: this example also comprises industry control center 90,90 pairs at industry control center with it directly the induced draft fans 18 of electrical connection, enter stove coal transfer roller 17 and bucket elevator 11 is controlled,

This example also includes stove coal electric controller 901, entering 901 pairs of stove coal electric controllers enters stove coal transfer roller 17, induced draft fan 18 and bucket elevator 11 and automatically controls respectively, enter stove coal electric controller 901 and link with upper industry control center 90 again, realize entering the automatization of stove coal dewatering.Certainly from electric control theory, enter stove coal transfer roller 17, induced draft fan 18 and bucket elevator 11 in this example and also can directly be subjected to 90 controls of industry control center, so set into the restriction that stove coal electric controller 901 does not consist of 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, send in the dehydrator shell 121 top material bins 1241 by the stove coal that enters that bucket elevator 11 is finished proportioning first, by pan feeding vibratory screening apparatus 1242, blanking channel 1243, blanking vibratory screening apparatus 1244, waste gas radiator element 125 falls into coal bunker 14 at last;

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 the hot waste gas master, dehydration waste gas exhaust channel 1252 by waste gas radiator element 125 inside enters dehydration waste gas master and discharges tracheae 123 again, enters water layer in the dust settling chamber 152 by induced draft fan 18 again and discharges from chimney 16 after cleaning;

3, meanwhile, enter the 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 (such as Fig. 3), be higher than the entrance 1341 of discharging siphunculus 134 in the off-air owing to enter the entrance 1321 of siphunculus 132 in the off-air, hot off-air forms whirlwind from top to bottom and enters discharge siphunculus 134 in the off-air, discharge siphunculus 135 dischargings outward finally by crossing steel fiber filtering net 136 and off-air, thereby the dust in the off-air because intercepting the dust funnel 133 that falls into the below, steel fiber filtering net 136 enters coal bunker 14.

Third part enters the stove coal and advances coal, preheating, adjusting, cooling

Entering the stove coal and generally can be down to normal temperature through temperature after carrying after the dehydration, particularly winter temperature is lower, temperature may be lower, but but wish during coking to enter stove coal temperature remain between 200 ℃ to 300 ℃ more suitable, so need to before entering the coking chamber of coal heat decomposition stove, carry out preheating to entering the stove coal.

First segment enters the stove coal and advances coal

As shown in Figure 5: advance 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 the middle coal dust that projection is set in stove coal bunker 22 bottoms 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 in coal dust distribution chamber 26 bottoms, enters stove coal bunker tremie pipe 29 blanking control valve 24 is set.

Such as Fig. 5, shown in Figure 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, discharge siphunculus 234 in the off-air, 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 discharge siphunculus 234 in the off-air, the entrance that off-air enters siphunculus 232 outward is higher than discharge siphunculus 234 entrances in the off-air, off-air enters siphunculus 232 outward and forms cyclone structures with the interior 234 one-tenth vertical angles of siphunculus of discharging of off-air at filter body 231, discharging siphunculus 234 in the off-air is arranged on the strainer internal head cover 237, off-air is discharged siphunculus 235 outward and is arranged on the outer top cover 238 of strainer, is provided with steel fiber filtering net 236 outside strainer internal head cover 237 and strainer between the top cover 238.

In addition; as shown in figure 11; this example also comprises into device for coal electric controller 902; advance that 902 pairs of coal electric controllers enter stove cuttings conveyer 21 and blanking control valve 24 is controlled; advancing device for coal electric controller 902 links with upper industry control center 90 again; certainly from electric control theory, enter stove cuttings conveyer 21 and blanking control valve 24 in this example and also can directly be subjected to industry control center 90 control, do not consist of restriction to this routine protection domain so arrange device for coal electric controller 902 herein.

Second section enters the preheating of stove coal

Such as Fig. 5, shown in Figure 6: primary heater unit 39 places into the below of device for coal 2, and primary heater unit 39 is positioned at the top of coal heat decomposition stove 9.

Such as Fig. 6, Fig. 7, shown in Figure 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 Figure 8), internal layer body of wall 913 forms 911 formation waste gas of exhaust air chamber 391 middle level bodies of wall 912 and outer body of wall and assembles 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 913,912 assemble circuit 395 with exhaust air chamber 391 and waste gas is communicated with, and will be separated into several preheating chambers 394 (as shown in Figure 8 between internal layer body of wall 913 and the middle level body of wall 912, this example has 8 heating by the exhaust gases passages 392 will be separated out 8 preheating chambers 394), preheater 393 places respectively each preheating chamber 394.

Such as Fig. 7, shown in 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 on cylindrical shell 3931 successively from top to bottom in groups, is beneficial to entering the even preheating of coal stove.

Such as Fig. 8, shown in Figure 6, body of heater 91 adopts circle to be beneficial to the space priorization, reserves certain space between preheater 393 and the preheating chamber 394, utilizes the warm air in the exhaust air chamber 391 that preheater 393 is heated, and homogeneous heating is stable.

As shown in Figure 6, be provided with at body of heater 91 and lead to preheating chamber thermometer hole 3941, preheating chamber thermometer 3942 is arranged on the temperature variation that 3941 outlets of preheating chamber thermometer hole are used for monitoring preheating chamber 394, be provided with at body of heater 91 and lead to exhaust air chamber thermometer hole 3914, exhaust air chamber thermometer 3915 is arranged on the temperature variation that 3914 outlets of waste gas thermometer hole are used 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 the technician observes exhaust air chamber 391 in the bottom of exhaust air chamber 391, the working condition of coal heat decomposition stove 9 bottoms.

Such as Fig. 5, shown in 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 off-air enter outward in the siphunculus 232, the stove coal that enters that is conducive in the coal stove storehouse 22 drops into preheating in the preheating chamber 394 smoothly.

Such as Fig. 5, Fig. 6, shown in Figure 8, the bottom of exhaust air chamber 391 is provided with hot waste gas admission passage 3911, hot waste gas after the burning enters from hot waste gas admission passage 3911, entering waste gas by heating by the exhaust gases passage 392 assembles in the circuit 395, assemble at last waste gas primary outlet 3951 discharges of circuit 395 from waste gas, hot waste gas after the 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 from exhaust air chamber 391, discharging after burning that preheating chamber 394 Airs are heated, the stove coal that enters that reaches falling into preheater 393 carries out preheating, can lower the temperature to the hot waste gas of from exhaust air chamber 391, discharging after burning again simultaneously, do not need to consume the extra energy, reach self the UTILIZATION OF VESIDUAL HEAT IN purpose to the hot waste gas after the burning.

In addition, as shown in figure 11, this example comprises that also preheating temperature monitor 903 is used for the temperature data of monitoring preheating chamber thermometer 3942 and exhaust air chamber thermometer 3915.Preheating temperature monitor 903 links with upper industry control center 90 again; certainly from electric control theory; preheating chamber thermometer 3942 and exhaust air chamber thermometer 3915 also can directly be subjected to industry control center 90 monitoring in this example, do not consist of restriction to this routine protection domain so preheating temperature monitor 903 is set herein.

The stove coal that enters after the 3rd joint preheating is regulated

Such as Fig. 5, shown in Figure 6, enter stove coal surge bunker 3, entering stove coal surge bunker 3 is arranged on and is positioned at preheater 393 bottoms on the body of heater 91, the periphery of exhaust air chamber 391 enters stove coal surge bunker 3 and comprises coal pocket 31, the upper and lower material level meter 32 of coal bunker, 33, coal pocket thermometer 34, coal pocket blanking road 35, coal pocket baiting valve 36.

Such as Fig. 5, shown in Figure 6, coal pocket 31 tops connect preheater 393 bottoms, the upper and lower material level meter 32 of coal bunker, 33 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, and coal pocket blanking road 35 leads to coal heat decomposition stove coking chamber 61 (shown in Figure 9).

In addition; as shown in figure 11: this example also includes the 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 control with the switching to coal pocket baiting valve 36; entering stove coal adjusting electric controller 904 links with upper industry control center 90 again; certainly from electric control theory; gather on the coal bunker in this example; 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 directly is subjected to 90 controls of industry control center, regulates electric controller 904 and does not consist of restriction to this routine protection domain so set into the stove coal herein.

This example enters stove coal control method:

1, the stove coal that enters after the preheating is injected coal pocket 31 and stores away in advance first, when needs to coking chamber 61 in during coal, industry control center 90 is opened coal pocket baiting valves 36 and enter the stove coal in coking chamber 61;

2, when needs stop coal to coking chamber, coal pocket baiting valve 36 is closed at industry control center 90, stops to add the stove coal in coking chamber 61;

3, detect coal in the coal pocket 31 when not enough when level gage under the coal bunker 33, blanking control valve 24 is opened at industry control center 90, give coal in the coal pocket 31, when the coal that level gage on the coal bunker 32 detects in the coal pocket 31 is filled it up with, blanking control valve 24 is closed at industry control center 90, stop to coal pocket 31 coals, play the stove coal that enters that enters coking chamber 61 is regulated.

Such as Fig. 5, shown in Figure 6, coal pocket 31 tops also are 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 the siphunculus 232, is beneficial in the coal pocket 31 smoothly coal

The stove coal that enters that the 4th joint advances before the coking chamber cools off

As shown in Figure 9, coal pocket blanking road 35 is to the coking chamber 61 notes coal of coal heat decomposition stove the time, because there is the raw gas that produces in a large amount of pyrolysis of coal processes in coking chamber 61 tops, 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 the stove coal in coal pocket blanking road 35, to lump easily, obstruction is annotated coal in coking chamber 61, thereby need to cool off entering the stove coal.

Such 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 be separately positioned on body of heater 91 around, air enters and is connected to respectively air on endless tube 56 and the Bas Discharged endless tube 52 and enters arm 54, Bas Discharged arm 53, its 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, and coal pocket blanking road 35 passes from cooling air channel 55 and leads to coking chamber 61.

Such as Figure 10, shown in Figure 9, because this body of heater 91 is designed to annular, around being beneficial to coking chamber 61, the coal pocket 31 that is provided with 8 notes coals around it carries out even coal, so cooling air channel 55 is corresponding with the quantity in coal pocket blanking road 35 also to be 8, enter successively air the siphunculus 57 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, discharge in the Bas Discharged siphunculus 51, utilize in the cooling air channel 55 the stove coal that enters in the coal pocket blanking road 35 is cooled off, prevent that effectively the stove coal from luming in coal pocket blanking road 35, realize in coking chamber 61, annotating coal smoothly.

In addition, coal pocket blanking road 35 mainly is that the inboard that relies on coking chamber 61 is subjected to the heat affecting of raw gas larger, so the inner side-wall 351 in coal pocket blanking road 35 places cooling air channel 55, the outer side wall 352 in coal pocket blanking road 35 is exposed in the air, utilize natural air to cool off, reduce to blast the air quantity in the cooling air channel 55, thereby save energy consumption.

Claims (8)

1. A coal heat decomposition stove enter stove coal primary heater unit, be installed in into the device for coal below, and be positioned at the top of coal heat decomposition stove, it is characterized in that: include body of heater, exhaust air chamber, at least one above heating by the exhaust gases passage, preheater; That body of heater is divided into is interior, in, outer three layers of body of wall, internal layer body of wall form exhaust air chamber, form waste gas between middle level body of wall and the outer body of wall and assemble circuit, in waste gas gathering circuit, be provided with the waste gas primary outlet, that the heating by the exhaust gases passage passes is interior, the middle level body of wall is assembled circuit with exhaust air chamber and waste gas and is communicated with, and will being separated into several preheating chambers between internal layer body of wall and the middle level body of wall, preheater places respectively each preheating chamber; The bottom of exhaust air chamber is provided with the hot waste gas admission passage, hot waste gas after the burning enters from the hot waste gas admission passage, entering waste gas by the heating by the exhaust gases passage assembles in the circuit, assemble at last the waste gas primary outlet discharge of circuit from waste gas, the hot waste gas after the 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.
2. 2. a kind of coal heat decomposition stove according to claim 1 enters stove coal primary heater unit, it is characterized in that: described preheater comprises that cylindrical shell, taper divide to device, open wide funnel, pre-hot coal blanking road, taper divides to device and unlimited funnel arranges on cylindrical shell successively from top to bottom in groups.
3. A kind of coal heat decomposition stove according to claim 1 enter stove coal primary heater unit, it is characterized in that: reserve certain space between described preheater and the preheating chamber.
4. 4. a kind of coal heat decomposition stove according to claim 1 enters stove coal primary heater unit, it is characterized in that: also comprise coal fine filter, described coal fine filter comprises filter body, the outer top cover of strainer, the strainer internal head cover, the steel fiber filtering net, off-air enters siphunculus, the dust funnel, discharge siphunculus in the off-air, off-air is discharged siphunculus outward, the filter body periphery is provided with the off-air that leads to the top from the bottom and enters siphunculus, be provided with the dust funnel in filter body inside, the dust funnel leads to into the stove coal bunker, discharging siphunculus in the off-air is arranged on the strainer internal head cover, and be positioned at above the dust funnel, the entrance of discharging siphunculus in the off-air is lower than the entrance that off-air enters siphunculus, off-air is discharged siphunculus outward and is arranged on the outer top cover of strainer, is provided with the steel fiber filtering net outside strainer internal head cover and strainer between the top cover; Described preheating chamber is provided with preheating off-air outlet duct, the off-air that preheating off-air outlet duct leads to coal fine filter enters siphunculus, the hot off-air of dust-laden above the preheating chamber is entered off-air enter in the siphunculus, be beneficial to the stove coal and drop into smoothly preheating in the preheating chamber.
5. A kind of coal heat decomposition stove according to claim 1 enter stove coal primary heater unit, it is characterized in that: described body of heater is provided with and leads to the preheating chamber thermometer hole, the preheating chamber thermometer is arranged on the temperature variation that the outlet of preheating chamber thermometer hole is used for the monitoring preheating chamber; Body of heater is provided with and leads to the exhaust air chamber thermometer hole, and the exhaust air chamber thermometer is arranged on the temperature variation that the outlet of waste gas thermometer hole is used for the monitoring exhaust air chamber.
6. A kind of coal heat decomposition stove according to claim 5 enter stove coal primary heater unit, it is characterized in that: also comprise the industry control center, described industry control center links to each other with the exhaust air chamber thermometer for temperature monitoring with monitoring preheating chamber thermometer.
7. 7. a kind of coal heat decomposition stove according to claim 6 enters stove coal primary heater unit, it is characterized in that: also comprise the preheating temperature monitor, described preheating temperature monitor is connected between industry control center and monitoring preheating chamber thermometer and the exhaust air chamber thermometer, and the industry control center is carried out temperature by the preheating temperature monitor to monitoring preheating chamber thermometer and exhaust air chamber thermometer and monitored.
8. A kind of coal heat decomposition stove according to claim 1 enter stove coal primary heater unit, it is characterized in that: the top of described exhaust air chamber arranges upper observation hole.

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