CN103184060A - Hot waste gas humidity control and dehydration method for coal gangue entering furnace - Google Patents

Hot waste gas humidity control and dehydration method for coal gangue entering furnace Download PDF

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Publication number
CN103184060A
CN103184060A CN2013101336119A CN201310133611A CN103184060A CN 103184060 A CN103184060 A CN 103184060A CN 2013101336119 A CN2013101336119 A CN 2013101336119A CN 201310133611 A CN201310133611 A CN 201310133611A CN 103184060 A CN103184060 A CN 103184060A
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coal gangue
waste gas
steam
water
hot waste
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CN2013101336119A
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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 a hot waste gas humidity control and dehydration method for coal gangue entering a furnace. The method comprises the following steps: (1) sending the coal gangue entering the furnace after breaking into a silo through a closed feeding belt conveyor; (2) performing dehydration and drying on the coal gangue containing water by using hot waste gas produced after burning of clean gas obtained after recovery and purification of a product got by gasification of raw gas produced by high-temperature pyrolysis of the coal gangue and reaction of water gas, and exhausting the hot waste gas after the temperature of the hot waste gas is lowered by heat exchange; (3) exhausting hot water steam in the coal gangue in a centralized manner by upwards collecting the hot water steam to a steam leading-out main pipe, wherein part of the water steam which is cooled becomes condensed water and then flows downwards into a condensed water discharge main pipe for being collected together and being discharged; and (4) enabling the coal gangue after dehydration and drying to finally fall into a lower coal bunker, continuously sending the coal gangue which is dehydrated and dried in the lower coal bunker to the next high-temperature pyrolysis process step through a closed discharge conveyor, further continuously supplementing new coal gangue granular material into the silo through the closed feeding belt conveyor and realizing the continuous dehydration and drying of the coal gangue.

Description

Go into stove coal gangue hot waste gas damping dewatering
Technical field
The present invention relates to go into stove coal gangue damping dewatering before the technology, particularly coal gangue pyrolytic gasification of dehydration before the coal gangue pyrolytic gasification.
Background technology
Coal gangue---the stone of selecting from raw coal is the waste residue of coal separating plant, bad processing, China has more than one hundred million tons coal gangue not utilize every year, and still continues to discharge about 100Mt every year, not only piles up and takes up an area of, and can also the spontaneous combustion polluted air or cause fire, cause serious environmental to pollute.
Owing to the incoalation in 1 years, contain carbon, oil, the gas material of 20-30% in the coal gangue, wherein oil gas accounts for 11-15%, carbon accounts for 7-15%.The coal gangue pyrolytic gasification, (composition is compositions such as silicon-dioxide, aluminium sesquioxide, ferric oxide, titanium dioxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide, Vanadium Pentoxide in FLAKES, manganese oxide, sulphur trioxide to obtain the solid product of oil gas product and 70-80%, be the grog of sal refractory materials), economic worth is arranged, social benefit is more arranged.
To the research of physical property and the high temperature coal pyrolysis gas metallization processes of coal gangue, the brand-new coal gangue of innovation one cover carries out damping dehydration and high temperature pyrolysis and gasification technology and device to the inventor for a long time.
Summary of the invention
The invention provides into stove coal gangue hot waste gas damping dewatering, this method utilizes the hot waste gas after the burning of coal gangue self high temperature pyrolysis and gasification to dehydrate, and does not need to increase extra energy consumption, saves cost, the efficient height.
Realize that the technical scheme that above-mentioned purpose is taked is:
Go into stove coal gangue hot waste gas damping dewatering, arranging that this method is related mainly comprises the sealing infeed belt conveyor, goes into stove coal gangue hot waste gas damping dewatering unit, seals the discharge transfer roller, describedly go into stove coal gangue hot waste gas damping dewatering unit and mainly comprise housing, steam steam discharge exporter, waste gas heat exchange water trap, blanking bin; Form feed bin in the described housing; Described steam steam discharge exporter comprises steam derivation house steward, and steam is derived umbrella road, vapor collection standpipe, water of condensation discharge manifold, and steam is derived the umbrella road and is umbrella shape inclination bending member, and the curved recessed interior vapor collection standpipe of bending member is provided with the steam export mouth; Described waste gas heat exchange water trap comprises hot waste gas admission passage, hot waste gas inlet chamber, radiating pipe, radiating pipe serial connection passage, waste gas transition chamber, low temperature waste gas discharge chamber, and concrete steps are:
(1), the stove coal gangue pellet of going into after using a sealing infeed belt conveyor with fragmentation is sent in the feed bin;
(2), feed the hot useless inlet chamber from the hot waste gas admission passage from the hot waste gas that the purified gas burning back behind the raw gas product reclaiming clean of coal gangue high temperature pyrolysis and water-gas reaction generation is produced simultaneously, carry out dewatered drying by the coal gangue to water content in the radiating pipe serial connection passage inflow radiating pipe again, hot waste gas reduces through the heat exchange temperature simultaneously, and last low temperature hot waste gas enters low temperature waste gas discharge chamber by the waste gas transition chamber and discharges;
(3), coal gangue in feed bin in through the radiating pipe heated baking, water in the coal gangue evaporates in a large number, water vapor is derived the collection of umbrella road through steam and is entered in the vapor collection standpipe by the steam export mouth, the steam of heat upwards is pooled to steam and derives house steward and concentrate and discharge, and the be cooled water vapor of cooling of a part becomes and flows into the water of condensation discharge manifold downwards behind the water of condensation and pool together discharging;
(4), the coal gangue after dehydrating falls into down in the coal bunker at last, constantly will descend the coal gangue that dehydrates in the coal bunker to deliver to down the high temperature pyrolysis operation one by sealing discharge transfer roller, from and constantly replenish new coal gangue pellet to the feed bin by the sealing infeed belt conveyor, realize the continuously dehydrating drying to coal gangue.
Hot waste gas after the purified gas that mainly utilizes coal gangue self high temperature pyrolysis and gasification to produce of the present invention burns dehydrates, produce a large amount of water vapors in the dehydration, water vapor enters water vapor by the steam export mouth and collects in the standpipe, the water vapor of heat upwards enters steam derivation house steward and discharges outward, the water of condensation of the water vapor liquefy that is cooled flows into the water of condensation discharge manifold downwards and discharges outward, be provided with steam derivation umbrella road in the inventor's the feed bin between the water vapor collection standpipe again and be umbrella shape inclination bending member, namely being beneficial to the coal gangue pellet evenly falls and is heated, also can utilize the interior water vapor of curved recessed guiding feed bin of bending member in water vapor collection standpipe, to distribute smoothly, when so the present invention dewaters, as long as being connect the hot waste gas inlet chamber, hot waste gas can dewater to feed bin coal gangue pellet, do not need additionally to increase energy consumption, save cost, dehydrating effect is good.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
Fig. 1 is the stove coal gangue hot waste gas damping dewatering unit cross-sectional schematic one of going into of the present invention;
Fig. 2 is the stove coal gangue hot waste gas damping dewatering unit cross-sectional schematic two of going into of the present invention;
Fig. 3 is k-k place schematic cross-section among Fig. 1;
Fig. 4 is p-p place schematic cross-section among Fig. 1;
Fig. 5 is j-j place schematic cross-section among Fig. 1;
Fig. 6 is the cross-sectional schematic that tail gas water of the present invention is washed one's hair cleaner;
Fig. 7 is the atomizing gondola water faucet schematic cross-section (a-a among Fig. 6) that tail gas water of the present invention is washed one's hair cleaner;
Fig. 8 is the tail gas pod schematic cross-section (b-b among Fig. 6) that tail gas water of the present invention is washed one's hair cleaner;
Fig. 9 is the tank schematic cross-section (d-d among Fig. 6) that tail gas water of the present invention is washed one's hair cleaner;
Figure 10 is the bottom of gullet schematic cross-section (e-e among Fig. 6) that tail gas water of the present invention is washed one's hair cleaner;
Figure 11 is industry control central electrical connection diagram of the present invention.
Embodiment
The specific embodiment of the comprehensive utilization of coal gangue pyrolytic gasification of the present invention is mainly introduced in detail following.
First part's coal gangue granularity control
Coal gangue processing is broken into 0~20mm granularity, in this size range, the coal gangue particle is dehydrated, fully dry, the dewatering efficiency height, but this does not constitute the restriction to needed coal gangue to the present invention.
Second section coal gangue damping dehydration
As shown in Figure 1 and Figure 2: go into stove coal gangue hot waste gas damping dewatering unit 1, comprise housing 11, steam steam discharge exporter 12, waste gas heat exchange water trap 13, blanking bin 14; Be formed for the feed bin 111 of broken fed to boiler coal gangue pellet damping drying in the housing 11, feed bin 111 relative closure tops only are provided with opening for feed 112, be provided with sealing infeed belt conveyor 17 at opening for feed 112 places and (refer to the transfer roller that belt covered with its circumferential closed barrel-shaped housing of a both ends open, prevent from being scattered into the stove coal gangue, keep the Working environment neat and tidy), blanking bin 14 is arranged on housing 11 bottoms and communicates with feed bin 111, blanking bin 14 is used for temporarily depositing that damping is dried goes into stove coal gangue pellet, and blanking bin 14 bottoms are connected to the discharge transfer roller 15 of sealing.
As Fig. 1, Fig. 2, Fig. 3,, Fig. 4, shown in Figure 5, steam steam discharge exporter 12 comprises that steam derives house steward 121, at least one above steam derivation umbrella roads 122, vapor collection standpipe 123, water of condensation discharge manifold 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 at interval in the feed bin 111 by rule; Vapor collection standpipe 123 vertically is arranged in the housing 11 relative both sidewalls, and steam is derived 122 two ends, umbrella road and is separately fixed on the both sidewalls vapor collection standpipe 123, and the curved recessed interior vapor collection standpipe 123 of bending member is provided with steam export mouth 125; Steam is derived in the sidewall of the upper shell 11 that house steward 121 is arranged on vapor collection standpipe 123, and steam is derived house steward 121 and communicated with vapor collection standpipe 123 tops, and steam derivation house steward 121 also is provided with water vapor relief outlet 126, is beneficial to the concentrated discharging of water vapor; Water of condensation discharge manifold 124 is arranged in the sidewall of below housing 11 of vapor collection standpipe 123, water of condensation discharge manifold 124 communicates with vapor collection standpipe 123 bottoms, water of condensation discharge manifold 124 also is provided with condensed water discharge outlet 127, is beneficial to the concentrated discharging of water of condensation.
As Fig. 1, Fig. 2, shown in Figure 3, go into stove coal gangue pellet high humidity when coming in just to come in from opening for feed 112, the steam that produces is more, arrange more on feed bin 111 tops so steam is derived umbrella road 122, 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 are all derived smoothly, and in feed bin 111 middle parts and bottom, it is lower to go into stove coal gangue pellet water content behind thermal dehydration, 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 five row at feed bin 111 middle parts, this example derives umbrella road 122, steam at feed bin 111 lower disposed material one row five row is derived umbrella road 122, certainly, steam is derived position and the quantity of arranging in umbrella road 122 and is depended primarily on into the moisture degree of stove coal gangue pellet in feed bin 111, the concrete structure that this example is enumerated does not constitute the claim limitation to this case.
As Fig. 1, Fig. 2, shown in Figure 3, come in to falling into feed bin 111 from opening for feed 112 because go into stove coal gangue pellet again, steam is derived umbrella road 122 and is arranged in the feed bin 111 by horizontal many of rule interval, steam is derived umbrella road 122 and is umbrella shape inclination bending member, being conducive to go into stove coal gangue pellet evenly looses in feed bin 111, going into stove coal gangue pellet can the 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 coal gangue pellet, the steam of collection enters in the vapor collection standpipe 123 smoothly by steam export mouth 125 in steam is derived umbrella road 122 curved recessed, the steam of heat upwards is pooled to steam by vapor collection standpipe 123 and derives among the house steward 121 by 126 discharges of water vapor relief outlet, steam is condensed into water because of cooling, and water is discharged from condensed water discharge outlet 127 by flowing into water of condensation discharge manifold 124 downwards.
As Fig. 1, Fig. 2, Fig. 4, shown in Figure 5, waste gas heat exchange water trap 13 comprises hot waste gas admission passage 131, hot waste gas inlet chamber 132, radiating pipe 133, radiating pipe serial connection passage 134, waste gas transition chamber 135, low temperature waste gas discharge chamber 136, exhaust fan 137; Hot waste gas inlet chamber 132 is arranged in middle and upper part one sidewall of housing 11, in the another side sidewall relative with hot waste gas inlet chamber 132 that waste gas transition chamber 135 is arranged on housing 11; Low temperature waste gas is discharged chamber 136 and is arranged in the bottom and hot waste gas inlet chamber 132 same sidewalls of housing 11, and low temperature waste gas is discharged chamber 136 and is provided with low temperature waste gas relief outlet 138, low temperature waste gas relief outlet 138 external exhaust fans 137; Several radiating pipe serial connection passages 134 are the parallel inside feed bin 111 that passes across housing 11 in twos, be connected between hot waste gas inlet chamber 132 and the waste gas transition chamber 135 and waste gas transition chamber 135 and low temperature waste gas are discharged between the chamber 136, one end 1341 of last radiating pipe serial connection passage 134 communicates with hot waste gas inlet chamber 132 and the other end 1342 sealings, and an end 1341 of next bar radiating pipe serial connection passage 134 seals and the other end 1342 communicates with waste gas transition chamber 135; In like manner, discharge between the chamber 136 at waste gas transition chamber 135 and low temperature waste gas, an end 1342 that also is last radiating pipe serial connection passage 134 communicates with waste gas transition chamber 135 and the other end 1341 sealings, one end, 1342 sealings of next bar radiating pipe serial connection passage 134 and the other end 1341 communicates with low temperature waste gas discharge chamber 136, the rest may be inferred, this example arranges many radiating pipes 133 and radiating pipe serial connection passage 134, with the contact area of increase with stove coal gangue pellet, improves coal gangue dewatering particle collections efficient.
As Fig. 1, Fig. 2, Fig. 4, shown in Figure 5, several radiating pipes 133 also adopt metallic substance to make, several radiating pipes 133 are spaced at radiating pipe serial connection passage 134, radiating pipe 133 is " U " type, one terminates on the parallel last radiating pipe serial connection passage 134, the other end is connected on the radiating pipe serial connection passage 134 of parallel next bar, parallel in twos radiating pipe serial connection passage 134 is connected mutually, be about to hot waste gas inlet chamber 132 and connect with waste gas transition chamber 135, waste gas transition chamber 135 and low temperature waste gas are discharged chamber 136 connect;
As shown in Figure 1 and Figure 2, U-shaped radiating pipe 133 is two rows at radiating pipe serial connection passage 134 and arranges, the U-shaped radiating pipe 133 of a last row is inverted U, the U-shaped mouth of the U-shaped radiating pipe 133 of a last row is relative with next U-shaped mouth of arranging U-shaped radiating pipe 133, in order to be beneficial to coal gangue pellet blanking, the top that the U-shaped radiating pipe 133 of a described last row is inverted U is wedge 1331, and next U-shaped inner bay place of arranging U-shaped radiating pipe 133 is wedge 1332.
As shown in figure 11, infeed belt conveyor 17, discharge transfer roller 15, exhaust fan 137 link with industry control center 90, by industry control center 90 work of control infeed belt conveyor 17, discharge transfer roller 15, exhaust fan 137 automatically.
Originally going into stove coal gangue hot waste gas damping dewatering is:
(1), use a sealing infeed belt conveyor 17 that the stove coal gangue pellet of going into after the fragmentation is sent to from coal inlet 112 in the feed bin of housing 11 in 111;
(2), feed the hot useless inlet chamber 132 from hot waste gas admission passage 131 from the hot waste gas that the purified gas burning back behind the raw gas product reclaiming clean of coal gangue high temperature pyrolysis and water-gas reaction generation is produced simultaneously, carry out dewatered drying by the coal gangue to water content in the radiating pipe serial connection passage 134 inflow radiating pipes 133 again, hot waste gas reduces through the heat exchange temperature simultaneously, and last low temperature hot waste gas enters low temperature waste gas discharge chamber 136 by waste gas transition chamber 135 and discharges;
(3), coal gangue in the feed bin of housing 11 in 111 through radiating pipe 133 heated bakings, water in the coal gangue evaporates in a large number, water vapor is derived 122 collections of umbrella road through steam and is entered in the vapor collection standpipe 123 by steam export mouth 125, the steam of heat upwards is pooled to steam and derives among the house steward 121, concentrate discharge by water vapor relief outlet 126, the be cooled water vapor of cooling of a part becomes to flow in the water of condensation discharge manifold 124 downwards behind the water of condensation and pools together, from condensed water discharge outlet 127 dischargings;
(4), the coal gangue after dehydrating falls into the following coal bunker 14 of housing 11 bottoms at last, constantly will descend the coal gangue that dehydrates in the coal bunker 14 to deliver to down the high temperature pyrolysis operation one by sealing discharge transfer roller 15, from and constantly to the feed bin 111 of housing 11, replenish new coal gangue pellet by sealing infeed belt conveyor 17, realize the continuously dehydrating drying to coal gangue.
Discharge the tail gas of discharging chamber 136 from low temperature waste gas for the neat and tidy that keeps environment and wash one's hair cleaner 16 processing back qualified discharges by tail gas water.
As Fig. 6, Fig. 7, Fig. 8, Fig. 9, shown in Figure 10, tail gas water is washed one's hair cleaner 16 and is comprised purification cylindrical shell 161, atomized spray 162, stainless steel filter wire stratum reticulare 163, tail gas pod 164, tank 165, water reservoir 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 pod 164, tank 165 all arrange and purify in the cylindrical shell 161; Water reservoir 166, sprinkling water pump 167 all arrange and purify outside the 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 pod 164 is cylindrical cover of a lower ending opening upper end closed, tail gas pod 164 is arranged on the top of tank 165, tail gas pod 164 is provided with a tail gas and enters pipe 169, and tail gas enters pipe 169 and passes and purify cylindrical shell 161 and communicate with the external world; Above tail gas pod 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 on the water arm 1601, water inlet arm 1601 stretches out to purify outside the cylindrical shell 161 to be connected with water inlet bustle pipe 1602, water inlet bustle pipe 1602 is for purifying cylindrical shell 161 peripheries around the home in the form of a ring, water inlet bustle pipe 1602 joins with sprinkling water pump 167 by the water inlet person in charge 160, spray water pump 167 and be connected to water absorption tube 1603, water absorption tube 1603 stretches in the water reservoir 166; Water reservoir 166 also communicates with tank 165 by passing purification cylindrical shell 161 communicating pipe 1604.
As shown in Figure 6, offering access opening 1611 near purification cylindrical shell 161 walls above the stainless steel filter wire stratum reticulare 163, the one, make things convenient for the workman to enter and purify the atomized spray 162 to damaging in the 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-in 1612, this water-in 162 is gone into the water of condensation discharge manifold 124 of the steam steam discharge exporter 12 of stove coal gangue hot waste gas damping dewatering unit 1 by pipe connection, allow the water of condensation of the dust-laden that water of condensation discharge manifold 124 discharges directly enter unified discharging in the tank 165, guarantee the clean of Working environment, offer into water overflow port 1613 at purification cylindrical shell 161 walls near tank 165 edges, tank 165 unnecessary water can be discharged from here, avoid water in the tank 165 too many and flood the opening of tail gas pod 164, cause tail gas to enter and be obstructed.
As Fig. 6, shown in Figure 7, for to filtering dust in the tail gas better, a plurality of atomized spray 162 161 are arranged in purifying cylindrical shell in the form of a ring, stretch out 161 outer and water inlet bustle pipe 1602 connections of purification cylindrical shell by many arms 1601 of intaking, in addition many group atomized spray 162 can also be set at interval from bottom to top in purifying cylindrical shell 161, 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 cleaner 16 and is provided with 3 groups atomized spray 162, stainless steel filter wire stratum reticulare 163, this not only can obtain cleaner tail gas, and can also lower the temperature to the tail gas of heat.
As shown in figure 11, spray water pump 167 and link with industry control center 90, sprayed the work of water pump 167 by industry control center 90 automatically.
The principle method that this routine tail gas water is washed one's hair purification is:
(1), discharges the low temperature waste gas process exhaust fan 137 of discharging chamber 136 from the low temperature waste gas of going into stove coal gangue hot waste gas damping dewatering unit 1, tail gas is pumped into tail gas to be entered pipe and 169 enters in the tail gas pod 164, blow to the water surface in the tank 165 of tail gas pod 164 belows, the dust that particle is bigger in the tail gas sinks to 165 ends of tank and discharges by spoil disposal pipeline 1650 through the absorption of flow surface in the water of immersion tank;
(2), the tail gas after flow surface absorption upwards filters the most of dust of elimination tail gas through stainless steel filter wire stratum reticulare 163;
(3), filter through stainless steel filter wire stratum reticulare 163 after tail gas enter the water smoke layer that atomized spray 162 water sprays form again, clean by purifying the exhaust port qualified discharge at cylindrical shell 161 tops through the water smoke layer in the tail gas.
Dustiness is reduced to minimum in the discharge tail gas in order to allow, (3) further replenishing is on it: tail gas enters the water smoke layer of atomized spray 162 formation again after filtering through stainless steel filter wire stratum reticulare 163, filter again through upwards entering the bigger stainless steel filter wire stratum reticulare 163 of order number again after the cleaning of water smoke layer in the tail gas, the water smoke layer that forms through the bigger stainless steel filter wire stratum reticulare 163 top atomized spray 162 of this order number cleans again, at last by purifying exhaust port 168 qualified discharges at cylindrical shell 161 tops.
Third part coal gangue high temperature pyrolysis and gasification (pyrolysis heating, water-gas are sent out and answered)
The high temperature pyrolysis heating of first segment coal gangue
Carry out regenerative heat exchange and alternate combustion by the purified gas behind the raw gas reclaiming clean that will produce in the coal gangue pyrolytic gasification, required thermal source is provided for the coal gangue pyrolytic gasification, need not consume the external energy, play energy saving purposes, save coal gangue pyrolytic gasification cost.
The second water saving coal gas reaction
Because the pyrolytic gasification temperature of coal gangue is higher, feed water vapor to coal gangue again, the charcoal in the coal gangue pyrolysis after product and superheated vapour meet and carry out water-gas reaction generation water-gas (carbon monoxide and hydrogen).
The 3rd joint raw gas take-up gear
Coal gangue produces the gas that contains a lot of useful compositions in the high temperature pyrolysis and gasification process, charcoal in the coal gangue pyrolysis after product and superheated vapour carry out water-gas reaction and generate water-gas (carbon monoxide and hydrogen), more than be referred to as raw gas, need derive in order to utilize raw gas.
The 4th joint continuous pyrolysis gasification
Comprehensively above-mentioned, these routine characteristics are that coal gangue pyrolysis, gasification (water-gas reaction), steam generation, raw gas are derived process integration in same body of heater, make that coal gangue pyrolysis, gasification (water-gas reaction), steam produce, raw gas is able to continuous realization.
The comprehensive cyclic utilization of the 4th part, pyrolysis of coal gas
Chapter 1, the reclaiming clean utilization of raw gas (change product)
First segment raw gas condensing works
It is higher that the coal gangue pyrolytic gasification is discharged the raw gas temperature, carries before changing the product recovery for the ease of the high temperature raw gas, the high temperature raw gas sprayed ammoniacal liquor cool off.
The reclaiming clean of the second joint raw gas
Raw gas after ammoniacal liquor sprays carries out gas-liquid separation, contain multiple useful organic component such as carbolic oil, naphtalene oil, washing oil, carbolineum etc. in the mixed solution after the gas-liquid separation and be used for other auxiliary product of industry refinement, coal gas after the gas-liquid separation is after the air cooling cooling, become purified gas after the dry method reclaiming clean reclaims, purified gas can store for burning.
Chapter 2, raw gas reclaiming clean afterfire utilizes
Purified gas burning behind the first segment raw gas reclaiming clean
Being used for burning through the purified gas after the absorption provides thermal source for the coal gangue pyrolytic gasification.
Second joint utilizes purified gas burning back waste gas to saturated active coke regeneration heating
Hot waste gas after the purified gas burning is used for that to evaporate thermal regeneration be unsaturated activated coke because the adsorption cleaning raw gas forms saturated active coke.
The 3rd joint utilizes purified gas burning back hot waste gas to going into the damping of stove coal gangue pellet
Hot waste gas after the purified gas burning is used for the coal gangue pellet of going into the stokehold is carried out the damping dehydration.
Chapter 3, the continuous coal gangue pyrolytic gasification of thermal cycling is comprehensive
The continuous coal gangue pyrolytic gasification of first segment thermal cycling and damping and tail gas clean-up
Hot waste gas after the purified gas burning is used for the coal gangue pellet of going into the stokehold is carried out the damping dehydration, carries out water after the hot waste gas dehydration again and washes one's hair purification and cooling, reaches clean discharged at lower temperature at last.
The continuous coal gangue pyrolytic gasification of second joint thermal cycling composite technology
Comprehensive above content draws the complete composite technology of the continuous coal gangue pyrolytic gasification of a kind of thermal cycling, includes stove coal gangue hot waste gas damping dehydration, coal gangue pyrolytic gasification, raw gas condensation, raw gas reclaiming clean, tail gas water and washes one's hair purification etc.
The control of the continuous coal gangue pyrolytic gasification of the 3rd joint thermal cycling composite technology
The various electrical equipments that use in the technologies such as UTILIZATION OF VESIDUAL HEAT IN of the hot waste gas after the present invention is burnt, burnt by coal gangue pyrolytic gasification, raw gas reclaiming clean, purified gas are controlled, and make that the continuous coal gangue pyrolytic gasification of thermal cycling is smooth.
Above content introduction just exemplifies a tool embodiment of thermal cycling continuous coal gangue pyrolytic gasification integration unit and technology, does not constitute the restriction to this case thermal cycling continuous coal gangue pyrolytic gasification integration unit and technology protection domain.

Claims (1)

1. go into stove coal gangue hot waste gas damping dewatering, it is characterized in that: arranging that this method is related mainly comprises the sealing infeed belt conveyor, goes into stove coal gangue hot waste gas damping dewatering unit, seals the discharge transfer roller, describedly go into stove coal gangue hot waste gas damping dewatering unit and mainly comprise housing, steam steam discharge exporter, waste gas heat exchange water trap, blanking bin; Form feed bin in the described housing; Described steam steam discharge exporter comprises steam derivation house steward, and steam is derived umbrella road, vapor collection standpipe, water of condensation discharge manifold, and steam is derived the umbrella road and is umbrella shape inclination bending member, and the curved recessed interior vapor collection standpipe of bending member is provided with the steam export mouth; Described waste gas heat exchange water trap comprises hot waste gas admission passage, hot waste gas inlet chamber, radiating pipe, radiating pipe serial connection passage, waste gas transition chamber, low temperature waste gas discharge chamber, and concrete steps are:
(1), the stove coal gangue pellet of going into after using a sealing infeed belt conveyor with fragmentation is sent in the feed bin;
(2), feed the hot useless inlet chamber from the hot waste gas admission passage from the hot waste gas that the purified gas burning back behind the raw gas product reclaiming clean of coal gangue high temperature pyrolysis and water-gas reaction generation is produced simultaneously, carry out dewatered drying by the coal gangue to water content in the radiating pipe serial connection passage inflow radiating pipe again, hot waste gas reduces through the heat exchange temperature simultaneously, and last low temperature hot waste gas enters low temperature waste gas discharge chamber by the waste gas transition chamber and discharges;
(3), coal gangue in feed bin in through the radiating pipe heated baking, water in the coal gangue evaporates in a large number, water vapor is derived the collection of umbrella road through steam and is entered in the vapor collection standpipe by the steam export mouth, the steam of heat upwards is pooled to steam and derives house steward and concentrate and discharge, and the be cooled water vapor of cooling of a part becomes and flows into the water of condensation discharge manifold downwards behind the water of condensation and pool together discharging;
(4), the coal gangue after dehydrating falls into down in the coal bunker at last, constantly will descend the coal gangue that dehydrates in the coal bunker to deliver to down the high temperature pyrolysis operation one by sealing discharge transfer roller, from and constantly replenish new coal gangue pellet to the feed bin by the sealing infeed belt conveyor, realize the continuously dehydrating drying to coal gangue.
CN2013101336119A 2013-04-10 2013-04-10 Hot waste gas humidity control and dehydration method for coal gangue entering furnace Pending CN103184060A (en)

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CN103409578A (en) * 2013-08-10 2013-11-27 山西鑫立能源科技有限公司 Preheating bin used for production of direct reduction iron through reduction gas
CN110779318A (en) * 2019-03-14 2020-02-11 邢台旭阳科技有限公司 Wet coal drying device and wet coal drying method using same

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CN201962121U (en) * 2011-04-14 2011-09-07 北京杰佳洁环境技术有限责任公司 Three-phase separator for high-efficiency anaerobic bioreactor
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Application publication date: 20130703