CN103194251B - Device for humidifying and dewatering hot waste gas of charging coal gangue - Google Patents

Device for humidifying and dewatering hot waste gas of charging coal gangue Download PDF

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Publication number
CN103194251B
CN103194251B CN201310133612.3A CN201310133612A CN103194251B CN 103194251 B CN103194251 B CN 103194251B CN 201310133612 A CN201310133612 A CN 201310133612A CN 103194251 B CN103194251 B CN 103194251B
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waste gas
steam
chamber
radiating tube
feed bin
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CN103194251A (en
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王新民
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Shanxi Xinli Energy Technology Co Ltd
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Shanxi Xinli Energy Technology Co Ltd
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Abstract

The invention discloses device for humidifying and dewatering hot waste gas of charging coal gangue. The device mainly comprises a shell, a steam exhaust exporter, a waste gas heat-exchange dewaterer, and a feeding hopper, wherein a storage bin is formed inside the shell; the feeding hopper is arranged at the bottom of the shell and communicated with the storage bin; the steam exhaust exporter comprises a steam exhaust master pipe, a steam exhaust umbrella channels, a steam collecting riser pipe and a condensate exhaust master pipe; the steam exhaust umbrella channels form umbrella slant bending elements; the steam exhaust umbrella channels are transversely arranged inside the storage bin at intervals; the waste gas heat-exchange dewaterer comprises a waste gas inlet channel, a hot waste gas inlet chamber, radiating pipes, radiating pipe cascading channels, a waste gas transition chamber, and a low-temperature waste gas discharge chamber; the radiating pipe cascading channels are connected in parallel two by two, between the hot waste gas inlet chamber and the waste gas transition chamber, and between the waste gas transition chamber and the low-temperature waste gas discharge chamber; and the two-by-two parallel radiating pipe cascading channels are mutually communicated by a plurality of radiating pipes. Coal gangue aggregates are dewatered by the hot waste gas; and the device does not need to add extra energy consumption, and is low in cost and good in effect.

Description

Enter stove gangue hot waste gas damping dewater unit
Technical field
The present invention relates to enter stove gangue hot waste gas damping dewater unit before the technology, particularly gangue pyrolytic gasification of dehydration before gangue pyrolytic gasification.
Background technology
Gangue---the stone of selecting from raw coal, is the waste residue of coal preparation plant, bad processing, China has the gangue of more than one hundred million tons not utilize every year, and still continues every year to discharge about 100Mt, not only piles up and takes up an area, and can also spontaneous combustion contaminated air or cause fire, cause serious environmental pollution.
Due to the incoalation of 1 years, in gangue, contain carbon, oil, the gas material of 20-30%, wherein oil gas accounts for 11-15%, carbon accounts for 7-15%.Gangue pyrolytic gasification, (composition is the compositions such as silica, alundum (Al2O3), di-iron trioxide, titanium dioxide, calcium oxide, magnesia, potassium oxide, sodium oxide molybdena, phosphorus pentoxide, manganese oxide, sulfur trioxide to obtain the solid product of oil gas product and 70-80%, the grog of sa refractory material), there is economic worth, more have social benefit.
The inventor is the research of the physical characteristic to gangue and high-temperature coal pyrolytic gasification technique for a long time, innovates a set of brand-new gangue and carry out damping dehydration and high temperature pyrolysis and gasification technique and device.
Summary of the invention
The invention provides into stove gangue hot waste gas damping dewater unit, this device utilizes the hot waste gas after the burning of gangue self high temperature pyrolysis and gasification to dehydrate, and does not need to increase extra energy consumption, saves cost, and efficiency is high.
Realizing the technical scheme that above-mentioned purpose takes is:
Enter stove gangue hot waste gas damping dewater unit, mainly comprise housing, steam steam discharge exporter, waste gas heat exchange dehydrator, blanking bin, in described housing, form feed bin, feed bin relative closure top is only provided with charging aperture, and described blanking bin is arranged on housing bottom and communicates with feed bin, described steam steam discharge exporter comprises steam derivation house steward, at least one above steam is derived umbrella road, vapor collection standpipe, condensed water discharge header, steam is derived umbrella road and is umbrella shape inclination bending member, and many steam are derived umbrella road and are horizontally installed in feed bin by regular interval, vapor collection standpipe is longitudinally arranged in the relative both sidewalls of housing, and steam is derived two ends, umbrella road and is separately fixed on both sidewalls vapor collection standpipe, on the vapor collection standpipe in bending member curved recessed, is provided with steam export mouth, steam is derived house steward and is arranged in the sidewall of upper shell of vapor collection standpipe, steam is derived house steward and is communicated with vapor collection riser upper, steam is derived house steward and is also provided with water vapour outlet, condensed water discharge header is arranged in the sidewall of below housing of vapor collection standpipe, condensed water discharge header communicates with vapor collection standpipe bottom, and condensed water discharge header is also provided with condensed water discharge outlet, described waste gas heat exchange dehydrator comprises that hot waste gas admission passage, hot waste gas enter chamber, radiating tube, radiating tube serial connection passage, waste gas transition chamber, low temperature waste gas discharge chamber, the hot waste gas chamber of entering is arranged in middle and upper part one sidewall of housing, waste gas transition chamber be arranged on housing enter the relative another side sidewall in chamber with hot waste gas in, bottom and hot waste gas that low temperature waste gas discharge chamber is arranged on housing enter in the same face sidewall of chamber, and low temperature waste gas discharge chamber is provided with low temperature waste gas outlet, several radiating tube serial connection passages parallel inside feed bin that passes across housing between two, being connected on hot waste gas enters between chamber and waste gas transition chamber and between waste gas transition chamber and low temperature waste gas discharge chamber, one end of upper radiating tube serial connection passage communicates with the hot waste gas chamber of entering and other end sealing, and one end of next radiating tube serial connection passage is sealed and the other end communicates with waste gas transition chamber, in like manner, between waste gas transition chamber and low temperature waste gas discharge, also the one end that is upper radiating tube serial connection passage communicates with waste gas transition chamber and other end sealing, one end sealing of next radiating tube serial connection passage and the other end communicates with low temperature waste gas discharge chamber, the rest may be inferred, several radiating tubes also adopt metal material to make, several radiating tubes are spaced on radiating tube serial connection passage, the end that dispels the heat is connected on parallel upper radiating tube serial connection passage, the other end is connected on parallel next radiating tube serial connection passage, parallel between two radiating tube serial connection passage is connected mutually, enter chamber and the connection of waste gas transition chamber by hot waste gas, waste gas transition chamber and low temperature waste gas discharge chamber are connected.
Described radiating tube is " U " type, and U-shaped radiating tube is connected in series on passage and is two rows arrangement at radiating tube, and the U-shaped radiating tube of a upper row is inverted U, and U-shaped mouthful of the U-shaped radiating tube of a upper row is relative with the U-shaped mouth of the U-shaped radiating tube of next row.
The top that the described U-shaped radiating tube of a upper row is inverted U is wedge, and the U-shaped inner bay place of the U-shaped radiating tube of next row is wedge.
Described steam is derived the rule lateral arrangement that umbrella road is listed as by three rows five on feed bin top, and in the middle part of feed bin, arranges the steam derivation umbrella road that material one row five is listed as, and arranges the steam of five row derive umbrella road at feed bin lower disposed material one.
The described external exhaust fan of low temperature waste gas outlet.
Hot waste gas after the purified gas burning that mainly utilizes the generation of gangue self high temperature pyrolysis and gasification of the present invention dehydrates, in dehydration, produce a large amount of water vapours, water vapour enters water vapour by steam export mouth and collects in standpipe, the water vapour of heat upwards enters steam derivation house steward and discharges outward, the condensed water of the water vapour liquefy being cooled flows into condensed water discharge header downwards and discharges outward, in the inventor's feed bin, between water vapour collection standpipe, be provided with again steam derivation umbrella road and be umbrella shape inclination bending member, being beneficial to gangue pellet evenly falls and is heated, also can utilize the interior water vapour of curved recessed guiding feed bin of bending member to collect in standpipe and distribute smoothly to water vapour, when so the present invention dewaters, as long as hot waste gas is connect to hot waste gas to be entered chamber and can dewater to feed bin gangue pellet, do not need additionally to increase energy consumption, save cost, dehydrating effect is good.
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 be of the present invention enter stove gangue hot waste gas damping dewater unit cross-sectional schematic one;
Fig. 2 be of the present invention enter stove gangue hot waste gas damping dewater unit cross-sectional schematic two;
Fig. 3 is k-k place schematic cross-section in Fig. 1;
Fig. 4 is p-p place schematic cross-section in Fig. 1;
Fig. 5 is j-j place schematic cross-section in Fig. 1;
Fig. 6 is the cross-sectional schematic that tail gas water of the present invention is washed one's hair clarifier;
Fig. 7 is the atomization gondola water faucet schematic cross-section (a-a in Fig. 6) that tail gas water of the present invention is washed one's hair clarifier;
Fig. 8 is the tail gas kuppe schematic cross-section (b-b in Fig. 6) that tail gas water of the present invention is washed one's hair clarifier;
Fig. 9 is the tank schematic cross-section (d-d in Fig. 6) that tail gas water of the present invention is washed one's hair clarifier;
Figure 10 is the bottom of gullet schematic cross-section (e-e in Fig. 6) that tail gas water of the present invention is washed one's hair clarifier;
Figure 11 is industry control central electrical connection diagram of the present invention.
Detailed description of the invention
The specific embodiment of the comprehensive utilization of gangue pyrolytic gasification of the present invention is mainly being introduced below in detail.
The control of Part I gangue granularity
Gangue processing is broken into 0~20mm granularity, in this particle size range, gangue particle is dehydrated, fully dry, dewatering efficiency is high, but this does not form the restriction to needed gangue to the present invention.
Part II gangue damping dehydration
As shown in Figure 1 and Figure 2: enter stove gangue hot waste gas damping dewater unit 1, comprise housing 11, steam steam discharge exporter 12, waste gas heat exchange dehydrator 13, blanking bin 14, in housing 11, be formed for the dry feed bin 111 of broken fed to boiler gangue pellet damping, feed bin 111 relative closure tops are only provided with charging aperture 112, be provided with sealing infeed belt conveyor 17 at charging aperture 112 places and (refer to conveyer belt being covered with its circumferential closed barrel-shaped casing of a both ends open, prevent from being scattered into stove gangue, keep working environment neat and tidy), blanking bin 14 is arranged on housing 11 bottoms and communicates with feed bin 111, blanking bin 14 for temporarily deposit damping dried enter stove gangue pellet, blanking bin 14 bottoms are connected to the discharge conveyer 15 of sealing.
As shown in Figure 1, Figure 2, Fig. 3,, shown in Fig. 4, Fig. 5, steam steam discharge exporter 12 comprises that steam derives the above steam derivation of house steward 121, at least one umbrella road 122, vapor collection standpipe 123, condensed water discharge header 124; Steam is derived umbrella road 122 and is umbrella shape inclination bending member (maybe can be referred to as reverse V-shaped bending member), and many steam are derived umbrella road 122 and are horizontally installed in feed bin 111 by regular interval; Vapor collection standpipe 123 is longitudinally arranged in the relative both sidewalls of housing 11, and steam is derived 122 two ends, umbrella road and is separately fixed on both sidewalls vapor collection standpipe 123, on the vapor collection standpipe 123 in bending member curved recessed, is provided with steam export mouth 125; Steam is derived house steward 121 and is arranged in the sidewall of upper shell 11 of vapor collection standpipe 123, and steam is derived house steward 121 and communicated with vapor collection standpipe 123 tops, and steam is derived house steward 121 and is also provided with water vapour outlet 126, is beneficial to the concentrated discharge of water vapour; Condensed water discharge header 124 is arranged in the sidewall of below housing 11 of vapor collection standpipe 123, condensed water discharge header 124 communicates with vapor collection standpipe 123 bottoms, condensed water discharge header 124 is also provided with condensed water discharge outlet 127, is beneficial to the concentrated discharge of condensed water.
As Fig. 1, Fig. 2, shown in Fig. 3, high humidity when entering stove gangue pellet and coming in just to come in from charging aperture 112, the steam producing is more, arrange more so steam is derived umbrella road 122 on feed bin 111 tops, the rule lateral arrangement that this example is listed as by three rows five on feed bin 111 tops, so that a large amount of steam is all derived smoothly, and in feed bin 111 middle parts and bottom, enter stove gangue pellet water content after thermal dehydration lower, the steam of evaporation is less, it is few at feed bin 111 middle parts and lower disposed that steam is derived umbrella road 122, so arranging the steam of material one row's five row at feed bin 111 middle parts, this example derives umbrella road 122, arrange the steam of five row at feed bin 111 lower disposed material one and derive umbrella road 122, certainly, steam is derived position and the quantity of in feed bin 111, arranging in umbrella road 122 and is depended primarily on into the moisture degree of stove gangue pellet, the concrete structure that this example is enumerated does not form the claim limitation to this case.
As Fig. 1, Fig. 2, shown in Fig. 3, come in to falling into feed bin 111 from charging aperture 112 because enter stove gangue pellet again, steam is derived umbrella road 122 and is arranged in feed bin 111 by horizontal many of regular interval, steam is derived umbrella road 122 and is umbrella shape inclination bending member, being conducive to enter stove gangue pellet evenly falls apart in feed bin 111, entering stove gangue pellet can thermally equivalent drying and dehydrating, because being arranged on steam, steam export mouth 125 derives in bending member curved recessed in umbrella road 122 again, can effectively prevent from stopping up steam export mouth 125 into stove gangue pellet, the steam of deriving the curved recessed interior collection in umbrella road 122 through steam enters in vapor collection standpipe 123 smoothly by steam export mouth 125, the steam of heat is upwards pooled in steam derivation house steward 121 and is discharged by water vapour outlet 126 by vapor collection standpipe 123, steam is condensed into water because lowering the temperature, water is discharged from condensed water discharge outlet 127 by downward inflow condensed water discharge header 124.
As shown in Figure 1, Figure 2, shown in Fig. 4, Fig. 5, waste gas heat exchange dehydrator 13 comprises that hot waste gas admission passage 131, hot waste gas enter chamber 132, radiating tube 133, radiating tube serial connection passage 134, waste gas transition chamber 135, low temperature waste gas discharge chamber 136, exhaust fan 137; Hot waste gas enters in middle and upper part one sidewall that chamber 132 is arranged on housing 11, waste gas transition chamber 135 be arranged on housing 11 enter the relative another side sidewall in chamber 132 with hot waste gas in; Bottom and hot waste gas that low temperature waste gas discharge chamber 136 is arranged on housing 11 enter in the 132 the same face sidewalls of chamber, and low temperature waste gas discharge chamber 136 is provided with low temperature waste gas outlet 138, the external exhaust fan 137 of low temperature waste gas outlet 138; Several radiating tube serial connection passages 134 parallel inside feed bin 111 that passes across housing 11 between two, being connected on hot waste gas enters between chamber 132 and waste gas transition chamber 135 and between waste gas transition chamber 135 and low temperature waste gas discharge chamber 136, one end 1341 of upper radiating tube serial connection passage 134 and hot waste gas enter that chamber 132 communicates and the other end 1342 seals, and one end 1341 that next radiating tube is connected in series passage 134 is sealed and the other end 1342 communicates with waste gas transition chamber 135; In like manner, between waste gas transition chamber 135 and low temperature waste gas discharge chamber 136, also be that one end 1342 of upper radiating tube serial connection passage 134 communicates with waste gas transition chamber 135 and the other end 1341 seals, one end 1342 of next radiating tube serial connection passage 134 is sealed and the other end 1341 communicates with low temperature waste gas discharge chamber 136, the rest may be inferred, this example arranges many radiating tubes 133 and radiating tube serial connection passage 134, to increase and the contact area of stove gangue pellet, improves gangue dewatering particle collections efficiency.
As shown in Figure 1, Figure 2, shown in Fig. 4, Fig. 5, several radiating tubes 133 also adopt metal material to make, several radiating tubes 133 are spaced on radiating tube serial connection passage 134, radiating tube 133 is " U " type, one end is connected on parallel upper radiating tube serial connection passage 134, the other end is connected on parallel next radiating tube serial connection passage 134, parallel between two radiating tube serial connection passage 134 is connected mutually, enter chamber 132 by hot waste gas and connect with waste gas transition chamber 135, waste gas transition chamber 135 and low temperature waste gas discharge chamber 136 are connected;
As shown in Figure 1 and Figure 2, U-shaped radiating tube 133 is two rows and arranges on radiating tube serial connection passage 134, the U-shaped radiating tube 133 of a upper row is inverted U, U-shaped mouthful of the U-shaped radiating tube 133 of a upper row is relative with the U-shaped mouth of the U-shaped radiating tube 133 of next row, in order to be beneficial to gangue pellet blanking, the top that the described U-shaped radiating tube 133 of a upper row is inverted U is wedge 1331, and the U-shaped inner bay place of the U-shaped radiating tube 133 of next row is wedge 1332.
As shown in figure 11, infeed belt conveyor 17, discharge conveyer 15, exhaust fan 137 are connected with industry control center 90, are automatically controlled the work of infeed belt conveyor 17, discharge conveyer 15, exhaust fan 137 by industry control center 90.
Originally entering stove gangue hot waste gas damping dewatering is:
(1), use a sealing infeed belt conveyor 17 by entering in the feed bin that stove gangue pellet is sent to housing 11 from coal feed point 112 in 111 after fragmentation;
(2) hot waste gas, producing after the purified gas burning from the raw coke oven gas recovery of chemical products of gangue high temperature pyrolysis and water gas reaction generation is purified simultaneously passes into hot useless entering chamber 132 from hot waste gas admission passage 131, being connected in series passage 134 by radiating tube again flows in radiating tube 133 gangue of water content is carried out to dewatered drying, hot waste gas reduces through heat-exchange temperature simultaneously, and last Low Temperature Thermal waste gas enters low temperature waste gas discharge chamber 136 by waste gas transition chamber 135 and discharges;
(3), gangue 111 interior process radiating tube 133 heated bakings in the feed bin of housing 11, water in gangue evaporates in a large number, water vapour is collected by steam export mouth 125 and is entered in vapor collection standpipe 123 through steam derivation umbrella road 122, the steam of heat is upwards pooled to steam and derives in house steward 121, concentrate and discharge by water vapour outlet 126, the be cooled water vapour of cooling of a part becomes in the backward lower inflow condensed water discharge header 124 of condensed water and pools together, and discharges from condensed water discharge outlet 127;
(4), the gangue after dehydrating finally falls into the lower coal bunker 14 of housing 11 bottoms, constantly the gangue dehydrating in lower coal bunker 14 is delivered to down to high temperature pyrolysis operation one by sealing discharge conveyer 15, from and constantly to the feed bin 111 of housing 11, supplement new gangue pellet by sealing infeed belt conveyor 17, realize the continuous dehydration of gangue dry.
For keep tail gas that the neat and tidy of environment discharges from low temperature waste gas discharge chamber 136 by tail gas water wash one's hair clarifier 16 process qualified discharge.
As shown in Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, tail gas water is washed one's hair clarifier 16 and is comprised purification cylindrical shell 161, atomized spray 162, stainless steel filter wire stratum reticulare 163, tail gas kuppe 164, tank 165, cistern 166, sprays water pump 167, purify cylindrical shell 161 tops exhaust port 168 is set, atomized spray 162, stainless steel filtration silk screen 163, tail gas kuppe 164, tank 165 all arrange and purify in cylindrical shell 161, cistern 166, sprinkling water pump 167 all arrange and purify outside cylindrical shell 161, tank 165 arranges the bottom that purifies cylindrical shell 161, tank 165 bottoms are provided with spoil disposal pipeline 1650, tail gas kuppe 164 is cylindrical cover of a lower ending opening upper end closed, tail gas kuppe 164 is arranged on the top of tank 165, tail gas kuppe 164 be provided with a tail gas enter pipe 169, tail gas enter pipe 169 pass purify cylindrical shell 161 communicate with the external world, above tail gas kuppe 164, be provided with stainless steel filter wire stratum reticulare 163, stainless steel filter wire stratum reticulare 163 peripheries are completely fixed and purify on cylindrical shell 161 walls, above stainless steel filter wire stratum reticulare 163, atomized spray 162 is set, atomized spray 162 is connected on water inlet pipe 1601, water inlet pipe 1601 stretches out to purify outside cylindrical shell 161 to be connected with water inlet bustle pipe 1602, water inlet bustle pipe 1602 is for purifying around the home cylindrical shell 161 peripheries in the form of a ring, water inlet bustle pipe 1602 is responsible for 160 by water inlet and is joined with sprinkling water pump 167, spray water pump 167 and be connected to suction hose 1603, suction hose 1603 stretches in cistern 166, cistern 166 also communicates with tank 165 through purifying cylindrical shell 161 by communicating pipe 1604.
As shown in Figure 6, offering manhole 1611 near purification cylindrical shell 161 walls above stainless steel filter wire stratum reticulare 163, the one, facilitate workman to enter and purify the interior atomized spray 162 to damage of cylindrical shell 161, stainless steel filter wire stratum reticulare 163 keeps in repair, the 2nd, also can be regularly by the artificial plaster of alluvial on stainless steel filter wire stratum reticulare 163 of removing, purification cylindrical shell 161 walls above tank 165 offer water inlet 1612, this water inlet 162 connects into the condensed water discharge header 124 of the steam steam discharge exporter 12 of stove gangue hot waste gas damping dewater unit 1 by pipeline, allow the condensed water of the dust-laden that condensed water discharge header 124 discharges directly enter unified discharge in tank 165, ensure the clean of working environment, offering into water overfall 1613 near purification cylindrical shell 161 walls of tank 165 edges, the unnecessary water of tank 165 can be discharged from here, avoid water in tank 165 too many and flood the opening of tail gas kuppe 164, causing tail gas to enter is obstructed.
As Fig. 6, shown in Fig. 7, for to filtering better dust in tail gas, multiple atomized spray 162 are arranged in the form of a ring purifying in cylindrical shell 161, stretch out to purify outside cylindrical shell 161 by many water inlet pipes 1601 and connect with water inlet bustle pipe 1602, can also many group atomized spray 162 be set purifying in cylindrical shell 161 interval from bottom to top in addition, stainless steel filter wire stratum reticulare 163, and from bottom to top, the order number of stainless steel filter wire stratum reticulare 163 increases gradually, this tail gas water is washed one's hair clarifier 16 and is provided with the atomized spray 162 of 3 groups, stainless steel filter wire stratum reticulare 163, this not only can obtain cleaner tail gas, and can also lower the temperature to hot tail gas.
As shown in figure 11, spray water pump 167 and be connected with industry control center 90, by the work of industry control center 90 automatic spraying water pumps 167.
The Principle Method that this routine tail gas water is washed one's hair purification is:
(1) the low temperature waste gas process exhaust fan 137 of, discharging from entering the low temperature waste gas discharge chamber 136 of stove gangue hot waste gas damping dewater unit 1, tail gas is pumped into tail gas to be entered pipe and 169 enters in tail gas kuppe 164, blow to the water surface in the tank 165 of tail gas kuppe 164 belows, the dust that in tail gas, particle is larger, through the absorption of flow surface, sinks to 165 ends of tank in the water of immersion tank and discharges by spoil disposal pipeline 1650;
(2) tail gas, after flow surface absorption upwards filters through stainless steel filter wire stratum reticulare 163, the most of dust of elimination tail gas;
(3), filter through stainless steel filter wire stratum reticulare 163 after tail gas enter again the water smoke layer that atomized spray 162 water sprays form, in tail gas, clean the exhaust port qualified discharge by purifying cylindrical shell 161 tops through water smoke layer.
For allow discharge tail gas in dustiness be reduced to minimum, on it, (3) further supplements and is: after filtering through stainless steel filter wire stratum reticulare 163, tail gas enters the water smoke layer that atomized spray 162 forms again, in tail gas, after water smoke layer cleans, upwards entering the stainless steel filter wire stratum reticulare 163 that order number is larger filters again again, the water smoke layer again forming through the larger stainless steel filter wire stratum reticulare 163 top atomized spray 162 of this order number cleans, finally by purifying exhaust port 168 qualified discharges at cylindrical shell 161 tops.
Part III gangue high temperature pyrolysis and gasification (pyrolysis heating, water-gas are sent out and answered)
The high temperature pyrolysis heating of first segment gangue
By the purified gas after the raw coke oven gas reclaiming clean producing in gangue pyrolytic gasification is carried out to regenerative heat exchange and alternate combustion, required thermal source is provided to gangue pyrolytic gasification, need not consume the external energy, play energy-saving and cost-reducing object, save gangue pyrolytic gasification cost.
Second section water gas reaction
Because the pyrolytic gasification temperature of gangue is higher, then pass into water vapour to gangue, the charcoal in gangue pyrolysis afterproduct and superheated vapour meet and carry out water gas reaction generation water-gas (carbon monoxide and hydrogen).
Section three, raw coke oven gas let-off gear(stand)
Gangue produces the gas containing a lot of useful compositions in high temperature pyrolysis and gasification process, charcoal in gangue pyrolysis afterproduct and superheated vapour carry out water gas reaction and generate water-gas (carbon monoxide and hydrogen), more than be referred to as raw coke oven gas, need to derive to utilize raw coke oven gas.
Section four, continuous pyrolysis gasification
Comprehensively above-mentioned, this routine feature is that gangue pyrolysis, gasification (water gas reaction), steam generation, raw coke oven gas are derived to process integration in same body of heater, makes gangue pyrolysis, gasification (water gas reaction), steam generation, raw coke oven gas be able to continuous realization.
The comprehensive cyclic utilization of Part IV, pyrolysis of coal gas
Chapter 1, the reclaiming clean utilization of raw coke oven gas (change and produce)
First segment raw coke oven gas condensing unit
Gangue pyrolytic gasification discharge raw gas temperature is higher, carries before recovery of chemical products for the ease of high temperature raw coke oven gas, high temperature raw coke oven gas is sprayed to ammoniacal liquor and carry out cooling.
The reclaiming clean of second section raw coke oven gas
Raw coke oven gas after ammoniacal liquor sprays carries out gas-liquid separation, in mixed liquor 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 method reclaiming clean reclaims, become purified gas, purified gas can store for burning.
Chapter 2, raw coke oven gas reclaiming clean after-combustion utilizes
Purified gas burning after first segment raw coke oven gas reclaiming clean
Purified gas after absorption provides thermal source for burning to gangue pyrolytic gasification.
After second section utilizes purified gas burning, waste gas is to saturated active coke regeneration heating
For form saturated active coke because of adsorption cleaning raw coke oven gas, to evaporate thermal regeneration be unsaturated activated coke to hot waste gas after purified gas burning.
Section three, utilize the rear hot waste gas of purified gas burning to entering the damping of stove gangue pellet
Hot waste gas after purified gas burning is for carrying out damping dehydration to the gangue pellet that enters stokehold.
Chapter 3, the continuous gangue pyrolytic gasification of thermal cycle is comprehensive
The continuous gangue pyrolytic gasification of first segment thermal cycle and damping and tail gas clean-up
Hot waste gas after purified gas burning, for the gangue pellet that enters stokehold is carried out to damping dehydration, carries out water again and washes one's hair purification and cooling after hot waste gas dehydration, finally reach clean discharged at lower temperature.
The continuous gangue pyrolytic gasification of second section thermal cycle composite technology
Comprehensive above content draws the complete composite technology of the continuous gangue pyrolytic gasification of a kind of thermal cycle, includes stove gangue hot waste gas damping dehydration, gangue pyrolytic gasification, raw coke oven gas condensation, raw coke oven gas reclaiming clean, tail gas water and washes one's hair purification etc.
Section three, the control of the continuous gangue pyrolytic gasification of thermal cycle composite technology
The various electric equipments that use in the techniques such as the UTILIZATION OF VESIDUAL HEAT IN of the hot waste gas after the present invention is burnt, burnt by gangue pyrolytic gasification, raw coke oven gas reclaiming clean, purified gas are controlled, and make the continuous gangue pyrolytic gasification of thermal cycle smooth.
Above content introduction just exemplifies a tool embodiment of thermal cycle continuous gangue pyrolytic gasification integration unit and technique, does not form the restriction to this case thermal cycle continuous gangue pyrolytic gasification integration unit and technique protection domain.

Claims (5)

1. enter stove gangue hot waste gas damping dewater unit, it is characterized in that: mainly comprise housing, steam steam discharge exporter, waste gas heat exchange dehydrator, blanking bin, in described housing, form feed bin, feed bin relative closure top is only provided with charging aperture, and described blanking bin is arranged on housing bottom and communicates with feed bin, described steam steam discharge exporter comprises steam derivation house steward, at least one above steam is derived umbrella road, vapor collection standpipe, condensed water discharge header, steam is derived umbrella road and is umbrella shape inclination bending member, and many steam are derived umbrella road and are horizontally installed in feed bin by regular interval, vapor collection standpipe is longitudinally arranged in the relative both sidewalls of housing, steam is derived two ends, umbrella road and is separately fixed on both sidewalls vapor collection standpipe, on the vapor collection standpipe in bending member curved recessed, be provided with steam export mouth, described steam is derived umbrella road and is arranged more on feed bin top, and in feed bin middle part and bottom, it is less at feed bin middle part and lower disposed that steam is derived umbrella road, steam is derived house steward and is arranged in the sidewall of upper shell of vapor collection standpipe, steam is derived house steward and is communicated with vapor collection riser upper, steam is derived house steward and is also provided with water vapour outlet, condensed water discharge header is arranged in the sidewall of below housing of vapor collection standpipe, condensed water discharge header communicates with vapor collection standpipe bottom, and condensed water discharge header is also provided with condensed water discharge outlet, described waste gas heat exchange dehydrator comprises that hot waste gas admission passage, hot waste gas enter chamber, radiating tube, radiating tube serial connection passage, waste gas transition chamber, low temperature waste gas discharge chamber, the hot waste gas chamber of entering is arranged in middle and upper part one sidewall of housing, waste gas transition chamber be arranged on housing enter the relative another side sidewall in chamber with hot waste gas in, bottom and hot waste gas that low temperature waste gas discharge chamber is arranged on housing enter in the same face sidewall of chamber, and low temperature waste gas discharge chamber is provided with low temperature waste gas outlet, several radiating tube serial connection passages parallel inside feed bin that passes across housing between two, being connected on hot waste gas enters between chamber and waste gas transition chamber and between waste gas transition chamber and low temperature waste gas discharge chamber, one end of upper radiating tube serial connection passage communicates with the hot waste gas chamber of entering and other end sealing, and one end of next radiating tube serial connection passage is sealed and the other end communicates with waste gas transition chamber, in like manner, between waste gas transition chamber and low temperature waste gas discharge, also the one end that is upper radiating tube serial connection passage communicates with waste gas transition chamber and other end sealing, one end sealing of next radiating tube serial connection passage and the other end communicates with low temperature waste gas discharge chamber, the rest may be inferred, several radiating tubes also adopt metal material to make, several radiating tubes are spaced on radiating tube serial connection passage, the end that dispels the heat is connected on parallel upper radiating tube serial connection passage, the other end is connected on parallel next radiating tube serial connection passage, parallel between two radiating tube serial connection passage is connected mutually, enter chamber and the connection of waste gas transition chamber by hot waste gas, waste gas transition chamber and low temperature waste gas discharge chamber are connected.
As claimed in claim 1 enter stove gangue hot waste gas damping dewater unit, it is characterized in that: described radiating tube is " U " type, U-shaped radiating tube is two rows and arranges on radiating tube serial connection passage, the U-shaped radiating tube of a upper row is inverted U, and U-shaped mouthful of the U-shaped radiating tube of a upper row is relative with the U-shaped mouth of the U-shaped radiating tube of next row.
As claimed in claim 2 enter stove gangue hot waste gas damping dewater unit, it is characterized in that: the top that the U-shaped radiating tube of a described upper row is inverted U is wedge, and the U-shaped inner bay place of the U-shaped radiating tube of next row is wedge.
As claimed in claim 1 enter stove gangue hot waste gas damping dewater unit, it is characterized in that: described steam is derived the rule lateral arrangement that umbrella road is listed as by three rows five on feed bin top, and the steam of arranging material one row's five row at feed bin middle part is derived umbrella road, arrange the steam of five row at feed bin lower disposed material one and derive umbrella road.
As claimed in claim 1 enter stove gangue hot waste gas damping dewater unit, it is characterized in that: the described external exhaust fan of low temperature waste gas outlet.
CN201310133612.3A 2013-04-10 2013-04-10 Device for humidifying and dewatering hot waste gas of charging coal gangue Active CN103194251B (en)

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