CN209428460U - A kind of energy and water saving type low order fine coal low temperature pyrogenation system - Google Patents
A kind of energy and water saving type low order fine coal low temperature pyrogenation system Download PDFInfo
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- CN209428460U CN209428460U CN201822100823.8U CN201822100823U CN209428460U CN 209428460 U CN209428460 U CN 209428460U CN 201822100823 U CN201822100823 U CN 201822100823U CN 209428460 U CN209428460 U CN 209428460U
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Abstract
The utility model belongs to technical field of coal chemical industry more particularly to a kind of energy and water saving type low order fine coal low temperature pyrogenation system and method.The utility model passes through drying and preheating device, fine coal heat exchange pyrolysis installation, first flue gas discharger, pyrolysis gas filter device, cooling device, desulfurizer, oil-water collecting device, first oily-water seperating equipment, tar storage device, the energy and water saving type low order fine coal low temperature pyrogenation system and pass through fine coal pretreatment that waste water treatment system and the second flue gas discharger form, fine coal is dry and preheats, pulverized coal pyrolysis, semicoke cooling heat transferring, pyrolysis gas coarse filtration and refined filtration, it is pyrolyzed air cooling and desulfurization, the separation of tar and sewage and the process flow of wastewater treatment, improve oil-collecting ratio, it eliminates traditional handicraft and generates this drawback of a large amount of reluctant dregs of fat；The cost for administering organic wastewater is greatly saved in the cleaning and safety for maintaining workplace.
Description
Technical field
The utility model belongs to technical field of coal chemical industry more particularly to a kind of energy and water saving type low order fine coal low temperature pyrogenation system
System.
Background technique
Fine coal generally refers to the small-particle coal that partial size is less than 20mm.In recent years, as coal industry generallys use large size
Mechanization comprehensive exploitation, thereby result in fine coal in coal mining accounting up to 60% or so.Fine coal, which has, is easy to fugitive dust and dirt
Dye, is easy to the disadvantages of aoxidizing at inconvenient transport.Therefore, the economic value of fine coal how is played and excavated, dirt caused by fine coal is reduced
Dye a, it has also become question of common concern.In recent years, since Coal Clean efficiently utilizes and energy-saving and emission-reduction etc. are various
It is required that low order fine coal low temperature pyrogenation technology because process it is relatively easy, invest less, thermal energy high conversion efficiency, thus by
Gradually by the attention of various aspects, also there is very active situation in the exploitation in relation to pulverized coal pyrolysis technology.But up to now,
Industrialization in relation to low order pulverized coal pyrolysis technology not yet fully achieves.The existing also generally existing life of pulverized coal pyrolysis process system
A series of problems, such as producing line operational reliability is poor, tar poor quality, water consume is big, disposal of pollutants is serious, energy consumption is high, seriously affects
The promotion and application of pulverized coal pyrolysis technology.It therefore, is the development for promoting low order pulverized coal pyrolysis technology, above-mentioned bottlenecks problem is urgently
It is to be solved.
Utility model content
The utility model provides a kind of energy and water saving type low order fine coal low temperature pyrogenation system and method, and the first purpose is to mention
High production line operational reliability；The second purpose is to improve tar quality and oil-collecting ratio；The third purpose is reduction of waste water treatment
Cost；The fourth purpose is to improve working environment.
In order to achieve the above purposes, the technical solution adopted by the utility model is:
A kind of energy and water saving type low order fine coal low temperature pyrogenation system, including drying and preheating device, fine coal heat exchange pyrolysis installation,
First flue gas discharger, pyrolysis gas filter device, cooling device, desulfurizer, oil-water collecting device, the first water-oil separating dress
It sets, tar storage device, waste water treatment system and the second flue gas discharger；The drying and preheating device has an outlet
Mouth, an air inlet, a feed inlet and a discharge port, the fine coal heat exchange pyrolysis installation have an air inlet, two
Gas outlet, that is, fine coal heat exchange the first gas outlet of pyrolysis installation and fine coal heat exchange the second gas outlet of pyrolysis installation, a discharge port and one
A feed inlet, the pyrolysis gas filter device have an air inlet, a gas outlet and a feed inlet, the cooling dress
It is equipped with an air inlet, a gas outlet and a discharge port, the oil-water collecting device has a feed inlet, a discharging
Mouth and a water outlet, oil-water collecting device have a feed inlet and two discharge ports；The outlet of the drying and preheating device
Mouth is connect with the first flue gas discharger, and drying and preheating device air inlet is connect with fine coal heat exchange the first gas outlet of pyrolysis installation,
The feed inlet of drying and preheating device is connect with the discharge port of fine coal heat exchange pyrolysis installation, the discharge port and fine coal of drying and preheating device
The feed inlet connection of heat exchange pyrolysis installation；The air inlet of fine coal heat exchange pyrolysis installation is connect with drying and preheating device gas outlet, powder
Coal heat exchange the second gas outlet of pyrolysis installation connect with the air inlet of pyrolysis gas filter device, the feed inlet of pyrolysis gas filter device and
The discharge port connection of fine coal heat exchange pyrolysis installation；The gas outlet of pyrolysis gas filter device is connect with cooling device air inlet, cooling
The gas outlet of device connects desulfurizer, and cooling device discharge port is collected feed inlet device with grease and connect, oil-water collecting device
A discharge port connect with tar storage device, another discharge port of oil-water collecting device and the first oily-water seperating equipment
Feed inlet connection, the discharge port of the first oily-water seperating equipment are connect with tar storage device, the water outlet of the first oily-water seperating equipment
Mouth is connect with waste water treatment system, and waste water treatment system is also connected with the second flue gas discharger.
The drying and preheating device includes drier and preheater；Drier is provided with inlet port and outlet port, preheating
Device is provided with feed inlet, discharge port, gas outlet and air inlet；The connection of the feed inlet of drier discharge port and preheater, drier
Feed inlet is connect with the discharge port of fine coal heat exchange pyrolysis installation, the feed inlet of discharge port and fine coal the heat exchange pyrolysis installation of preheater
Connection, the gas outlet of preheater connect with the first flue gas discharger, and the air inlet and fine coal of preheater exchange heat pyrolysis installation the
One gas outlet connection.
The fine coal heat exchange pyrolysis installation includes pyrolysis kiln and hot-blast stove；The pyrolysis kiln has air inlet, two
A gas outlet, that is, fine coal heat exchange the first gas outlet of pyrolysis installation and fine coal heat exchange the second gas outlet of pyrolysis installation, a discharge port and
One feed inlet, the air inlet for being pyrolyzed kiln are connect with hot-blast stove gas outlet；The outlet of hot-blast stove air inlet and drying and preheating device
Mouth connection；The discharge port of pyrolysis kiln is connect with the feed inlet of drying and preheating device, is pyrolyzed the feed inlet and drying and preheating device of kiln
Discharge port connection.
The first flue gas discharger and the second flue gas discharger is made of flue gas processing device and chimney.
The pyrolysis gas filter device includes sifter, coarse filter and fine filter, and air inlet and the fine coal of coarse filter change
The gas outlet of hot pyrolysis installation connects, and the gas outlet of coarse filter and the air inlet of fine filter connect, the gas outlet of fine filter with it is cold
But device air inlet connects, and the feed inlet of sifter is connect with the discharge port of fine coal heat exchange pyrolysis installation, the discharge port of sifter
It is connect with the feed inlet of coarse filter.
The cooling device includes primary cooler, dry and wet combination air cooler and electric trapper, the air inlet of the primary cooler
It is connect with the gas outlet of pyrolysis gas filter device, the gas outlet of primary cooler is connect with the air inlet of dry and wet combination air cooler, dry and wet
The gas outlet of combination air cooler is connect with desulfurizer, the discharge port of primary cooler, dry and wet combination air cooler and electric trapper with oil
The feed inlet of water collecting device connects.
The desulfurizer is connect by blower with cooling device.
The waste water treatment system includes the second oily-water seperating equipment, secondary air-floatation device, dephenolize device, produces water coal
Sizing device and steam boiler；The input terminal of second oily-water seperating equipment and the output end of the first oily-water seperating equipment connect
Connect, the output end of the second oily-water seperating equipment is connect with the input terminal of secondary air-floatation device, the output end of secondary air-floatation device with
The input terminal of dephenolize device connects, and the output end of dephenolize device is connect with the input terminal for producing water-coal-slurry device, produces water-coal-slurry
The output end of device and the input terminal of steam boiler connect, and the output end of steam boiler is connect with the second flue gas discharger.
Second oily-water seperating equipment is the cyclone separator with air-floating apparatus；The secondary air-floatation device is adopted
With air-dissolving air-float or shallow air-floatation device；Dephenolize device is using hypergravity dephenolize machine.
The utility model has the advantages that
The utility model passes through drying and preheating device, fine coal heat exchange pyrolysis installation, the first flue gas discharger, pyrolysis gas mistake
Filter device, cooling device, desulfurizer, oil-water collecting device, the first oily-water seperating equipment, tar storage device, wastewater treatment
The energy and water saving type low order fine coal low temperature pyrogenation system and pass through fine coal pretreatment, powder that system and the second flue gas discharger form
Coal drying and preheating, pulverized coal pyrolysis, semicoke cooling heat transferring, pyrolysis gas coarse filtration and refined filtration, pyrolysis air cooling and desulfurization, tar and dirt
The separation of water and waste water treatment process, be the utility model produce it is following the utility model has the advantages that
(1) low organic wastewater production quantity and low water consumption.It is pre-dried and preheats this is because being used in the front end of system, because
And fine coal is made only to remain the water of constitution in coal when entering in pyrolysis of coal kiln, thus make giving up containing high organic matter in pyrolytic process
Water greatly reduces.Secondly, rear end cooling and purifying mostly uses the means such as indirect heat exchange, air-cooled, thus also greatly reduce new
Wastewater flow rate alleviates the systemic circulation water problem of traditional water cooling.This just provides convenience to the waste water treatment of rear end, reduces useless
The cost of water harnessing.Pressure of supply water is also significantly reduced due to global cycle discharge reduction to water-deficient area.
(2) due to using the combination work for utilizing the grain bed coarse filtration of self-produced semicoke building and Metal Substrate chimney filter essence to filter
Skill, thus substantially increase the reliability of gas solid separation system work.Produced tar degree of purity is also high, adds deeply convenient for further
Work, while also contributing to improving oil-collecting ratio, it eliminates traditional handicraft and generates this drawback of a large amount of reluctant dregs of fat.
(3) oily-water seperating equipment is combined using vertical separator+eddy flow-air bearing, changes traditional tediously long, technique of open type
Pattern, system can realize good closing, greatly reduce the dissipation of VOC, maintain the cleaning and safety of workplace.
(4) high concentrated organic wastewater is for producing water-coal-slurry, is used as fuel for process system steam boiler, outside excess steam
For or power generation it is personal for processing line, the cost for administering organic wastewater is greatly saved.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the utility model
Technological means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings
Detailed description is as follows.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is one structural representation of the utility model embodiment；
Fig. 2 is the structural representation of the utility model other embodiments.
In figure, 1- drying and preheating device；2- fine coal heat exchange pyrolysis installation；3- the first flue gas discharger；4- pyrolysis gas mistake
Filter device；5- cooling device；6- desulfurizer；7- oil-water collecting device；The first oily-water seperating equipment of 8-；9- tar storage dress
It sets；10- waste water treatment system；11- the second flue gas discharger；12- drier；13- preheater；14- is pyrolyzed kiln；15- hot wind
Furnace；16- sifter；17- coarse filter；18- fine filter；19- primary cooler；20- dry and wet combination air cooler；21- electric trapper；22- wind
Machine；The second oily-water seperating equipment of 23-；24- secondary air-floatation device；25- dephenolize device；26- produces water-coal-slurry device；27- steam
Boiler.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment one:
A kind of energy and water saving type low order fine coal low temperature pyrogenation system according to figure 1, including drying and preheating device 1, powder
Coal heat exchange pyrolysis installation 2, the first flue gas discharger 3, pyrolysis gas filter device 4, cooling device 5, desulfurizer 6, grease are received
Acquisition means 7, the first oily-water seperating equipment 8, tar storage device 9, waste water treatment system 10 and the second flue gas discharger 11；Institute
The drying and preheating device 1 stated has a gas outlet, an air inlet, a feed inlet and a discharge port, the fine coal to change
Hot pyrolysis installation 2 has an air inlet, two gas outlets i.e. fine coal heat exchange the first gas outlet of pyrolysis installation and fine coal heat exchange pyrolysis
The second gas outlet of device, a discharge port and a feed inlet, the pyrolysis gas filter device 4 have an air inlet, one
Gas outlet and a feed inlet, the cooling device 5 has an air inlet, a gas outlet and a discharge port, described
Oil-water collecting device 7 has a feed inlet, a discharge port and a water outlet, oil-water collecting device 7 have a feed inlet and
Two discharge ports；The gas outlet of the drying and preheating device 1 is connect with the first flue gas discharger 3, drying and preheating device 1 into
Port is connect with fine coal heat exchange the first gas outlet of pyrolysis installation, feed inlet and fine coal the heat exchange pyrolysis installation 2 of drying and preheating device 1
Discharge port connection, the exchange heat feed inlet of pyrolysis installation 2 of the discharge port of drying and preheating device 1 and fine coal connect；Fine coal heat exchange heat
The air inlet of solution device 2 is connect with 1 gas outlet of drying and preheating device, fine coal heat exchange the second gas outlet of pyrolysis installation and pyrolysis gas mistake
The air inlet connection of device 4 is filtered, the feed inlet of pyrolysis gas filter device 4 is connect with the discharge port of fine coal heat exchange pyrolysis installation 2；Heat
The vent one's spleen gas outlet of filter device 4 is connect with 5 air inlet of cooling device, and the gas outlet of cooling device 5 connects desulfurizer 6, cold
But 5 discharge port of device is connect with 7 feed inlet of oil-water collecting device, and a discharge port and the tar storage of oil-water collecting device 7 fill
9 connections are set, another discharge port of oil-water collecting device 7 is connect with the feed inlet of the first oily-water seperating equipment 8, the first grease point
Discharge port from device 8 is connect with tar storage device 9, the water outlet and waste water treatment system 10 of the first oily-water seperating equipment 8
Connection, waste water treatment system 10 are also connected with the second flue gas discharger 11.
In actual use, the utility model passes through drying and preheating device 1, fine coal heat exchange pyrolysis installation 2, the first flue gas row
Out device 3, pyrolysis gas filter device 4, cooling device 5, desulfurizer 6, oil-water collecting device 7, the first oily-water seperating equipment 8,
The technical solution of 11 organic assembling of tar storage device 9, waste water treatment system 10 and the second flue gas discharger, fine coal is completed
By the separation of drying, preheating, decomposition, filtering, cooling, desulfurization, tar and sewage, sewage treatment and the process utilized, to each
The organic exhaust gas of equipment exhausting is collected processing by pipe network concentration, discharges after up to standard.Cooling and purifying and waste water slurrying are with after
Continuous processing unit, is all made of and is easy to closed equipment, escapes diffusion with prevent VOC gas, improves what production line was run
Reliability；Tar quality and oil-collecting ratio are improved；It greatly reduces the cost of waste water treatment and improves working environment.
Drying and preheating device in the present embodiment is using rotary point of chamber Multi-tube heating device in the prior art；This
Fine coal heat exchange pyrolysis installation in embodiment is using rotary point of chamber multitube septate heat transfer pyrolysis apparatus in the prior art；This
Pyrolysis gas filter device in embodiment using be it is in the prior art using particle semicoke pyrolysis gas is carried out it is pre-filtered
Process.This makes the utility model constitute the service life for greatly simplifying and extending equipment.
Embodiment two:
According to Fig. 1 and a kind of energy and water saving type low order fine coal low temperature pyrogenation system shown in Fig. 2, it is different from embodiment one it
Being in: the drying and preheating device 1 includes drier 12 and preheater 13；Drier 12 is provided with feed inlet and discharging
Mouthful, preheater 13 is provided with feed inlet, discharge port, gas outlet and air inlet；The charging of drier 12 discharge port and preheater 13
Mouth connection, 12 feed inlet of drier are connect with the discharge port of fine coal heat exchange pyrolysis installation 2, and discharge port and the fine coal of preheater 13 change
The feed inlet of hot pyrolysis installation 2 connects, and the gas outlet of preheater 13 is connect with the first flue gas discharger 3, preheater 13 into
Port is connect with fine coal heat exchange 2 first gas outlets of pyrolysis installation.
The preferably described fine coal heat exchange pyrolysis installation 2 includes pyrolysis kiln 14 and hot-blast stove 15；The pyrolysis kiln 14
There are an air inlet, two gas outlets i.e. fine coal heat exchange the first gas outlet of pyrolysis installation and fine coal heat exchange the second outlet of pyrolysis installation
The air inlet of mouth, a discharge port and a feed inlet, pyrolysis kiln 14 is connect with 15 gas outlet of hot-blast stove；15 air inlet of hot-blast stove
It is connect with the gas outlet of drying and preheating device 1；The discharge port of pyrolysis kiln 14 is connect with the feed inlet of drying and preheating device 1, is pyrolyzed
The feed inlet of kiln 14 is connect with the discharge port of drying and preheating device 1.
Preferably the pyrolysis gas filter device 4 includes sifter 16, coarse filter 17 and fine filter 18, coarse filter 17
The gas outlet of air inlet and fine coal heat exchange pyrolysis installation 2 connect, the gas outlet of coarse filter 17 and the air inlet company of fine filter 18
It connects, the gas outlet of fine filter 18 is connect with 5 air inlet of cooling device, feed inlet and fine coal the heat exchange pyrolysis installation 2 of sifter 16
Discharge port connection, the discharge port of sifter 16 connect with the feed inlet of coarse filter 17.
In actual use, the partial size from stock ground is not more than the fine coal of 30mm, screened removal of impurities, except after iron, into dry
In dry device 12, and the hot semicoke being discharged by 14 tail end of pyrolysis kiln, heat exchange is carried out by septate heat transfer in drier 12.At this
During one, semicoke is cooled off, and temperature is down to 60 DEG C or so after the further water-spraying control passivation in 12 exit of drier
It is sent into stockyard.The moisture of fine coal through predrying 12, wherein most has been removed, and is sent into preheats via conveying equipment later
Device 13.In preheater 13 and come 14 tail end of self-pyrolysis kiln discharge 350 DEG C or so of hot fume by indirect heat exchange mode into
One step exchanges heat, and the moisture in coal is further removed, while temperature rises to 180 ~ 200 DEG C, enters pyrolysis kiln 14 later.By pre-
The flue gas that hot device 13 is discharged, a part send back to the hot-blast stove 15 of pyrolysis 14 heat supply of kiln as return air；Another part is de- through desulfurization
Nitre and dust removal process, in addition to part is used as the carrier gas of drier 12 and preheater 13, through smoke stack emission after remaining is up to standard.By preheating
Device 13 is sent to the hot fine coal of pyrolysis kiln, and in pyrolysis kiln 14, the hot fume for being 700 DEG C or so through the temperature from hot-blast stove is into one
Indirect heating is walked, temperature is gradually increased to 550~650 DEG C.In the absence of air conditions, it completes to be pyrolyzed by 15~30min.It produces
Through pyrolysis 14 tail end of kiln discharge, sub-fraction is conveyed, sieves the particle semicoke of 3~10mm being sent into coarse filter raw semicoke
17, form granular bed filters.Remaining part, and drier 12 is sent by the semicoke that grain bed is discharged, together and feed
The wet coal that end is added, which exchanges heat, to cool down.The pyrolysis gas that pyrolysis kiln 14 generates initially enters pyrolysis gas filter device 4 through air guide mechanism.Make
Being bold enough to do, preheat of fine coal is pyrolyzed and produces preferable effect.
Embodiment three:
According to Fig. 1 and a kind of energy and water saving type low order fine coal low temperature pyrogenation system shown in Fig. 2, it is different from embodiment one it
Being in: the pyrolysis gas filter device 4 includes sifter 16, coarse filter 17 and fine filter 18, the air inlet of coarse filter 17
It is connect with the gas outlet of fine coal heat exchange pyrolysis installation 2, the gas outlet of coarse filter 17 is connect with the air inlet of fine filter 18, fine filter
18 gas outlet is connect with 5 air inlet of cooling device, and the discharge port of feed inlet and fine coal the heat exchange pyrolysis installation 2 of sifter 16 connects
It connects, the discharge port of sifter 16 is connect with the feed inlet of coarse filter 17.
In actual use, the pyrolysis gas that pyrolysis kiln generates initially enters coarse filter 17, coarse filter 17, warp through air guide mechanism
Semicoke grain bed first carries out coarse filtration, by coarse granule contained in gas and and part particulate filter out, enter back into fine filter 18 later,
Fine filter 18 gives further essence filtering using filter tube type high-temperature filter in this implementation, and it is small that particle content can be obtained
In 10mg/m3Clean gas.Chimney filter filter is configured with nitrogen heating, pulse cleaning system, periodically carries out blowback to chimney filter
Regeneration, to keep the strainability of chimney filter.
Example IV:
According to Fig. 1 and a kind of energy and water saving type low order fine coal low temperature pyrogenation system shown in Fig. 2, it is different from embodiment one it
Being in: the cooling device 5 includes primary cooler 19, dry and wet combination air cooler 20 and electric trapper 21, the primary cooler 19
Air inlet connect with the gas outlet of pyrolysis gas filter device 4, the gas outlet of primary cooler 19 and dry and wet combination air cooler 20 into
Port connection, the gas outlet of dry and wet combination air cooler 20 are connect with desulfurizer 6, primary cooler 19,20 and of dry and wet combination air cooler
The discharge port of electric trapper 21 is connect with the feed inlet of oil-water collecting device 7.
In actual use, by treated the clean pyrolysis gas of pyrolysis gas filter device 4, since temperature is still up to 500 DEG C
Left and right, thus it is introduced into coal gas primary cooler 19, through septate heat transfer, temperature is made to be down to 150 DEG C or so, while making water cooling medium liter
Temperature becomes steam, uses for system.Conduction oil can also be used in cooling medium, and the conduction oil after heating can be used for tank field equipment or pipe
The heat preservation or heating in road, make the energy obtain sufficient recycling, not only save energy, also a save cost.
The pyrolysis gas being discharged by primary cooler enters dry and wet combination air cooler 20 later, is further cooled to 20~40 DEG C,
Then electric trapper 21 is entered back into, is sent by blower pressurization to desulfurization process after further removing mist of oil, so that into desulfurizer 6
NH3 in pyrolysis gas is seldom, and it is spare to be sent into gas holder after desulfurization.Pyrolysis gas secondary cooling uses in the prior art dry
Wet joint air cooling device can greatly reduce the consumption and internal circulating load of water, the northern area lacked especially suitable for water resource.By first
The condensed tar and flushing liquor of the collections such as cooler, dry and wet combination air cooler, electric trapper, tentatively divide through collecting tank, vertical separator
From rear, feeding tar tank standing dehydration, in order to further carry out deep processing to tar.
Embodiment five:
According to Fig. 1 and a kind of energy and water saving type low order fine coal low temperature pyrogenation system shown in Fig. 2, it is different from embodiment one it
It is in and is connect by blower 22 with cooling device 5 in: the desulfurizer 6.
In actual use, desulfurizer 6 is connect by blower 22 with cooling device 5, improves the efficiency and matter of system
Amount.
Embodiment six:
According to Fig. 1 and a kind of energy and water saving type low order fine coal low temperature pyrogenation system shown in Fig. 2, it is different from embodiment one it
Be in: the waste water treatment system 10 include the second oily-water seperating equipment 23, secondary air-floatation device 24, dephenolize device 25,
Produce water-coal-slurry device 26 and steam boiler 27；The input terminal of second oily-water seperating equipment 23 and the first water-oil separating fill
8 output end connection is set, the output end of the second oily-water seperating equipment 23 is connect with the input terminal of secondary air-floatation device 24, second level gas
The output end of floating device 24 is connect with the input terminal of dephenolize device 25, and the output end of centrifugal extraction apparatus 25 is filled with water-coal-slurry is produced
26 input terminal connection is set, the output end for producing water-coal-slurry device 26 is connect with the input terminal of steam boiler 27, steam boiler 27
Output end connect with the second flue gas discharger 11.
Oily waste water is sent into eddy flow-air floatation combination device in actual use, through preliminary oil removal by air bubbling, later again through two
After grade oil removal by air bubbling, the waste water for meeting condition enters Centrifugical extraction dephenolize.Organic wastewater after dephenolize still contains higher organic matter,
COD content is still higher.This part waste water, which is directly sent to, produces water-coal-slurry, uses for steam boiler, and the steam of generation is used for technique
The purposes such as the flushing of system.The low concentration wastewater and Circulating water effluent and sanitary sewage generate to process system, focuses on tune
Pond is saved, then for semicoke passivation, coal yard dust suppression, road or terrace flushing etc. after biochemical treatment and advanced treating.Excess steam
Outer confession or power generation are personal for processing line, and the cost for administering organic wastewater is greatly saved.
Embodiment seven:
According to Fig. 1 and a kind of energy and water saving type low order fine coal low temperature pyrogenation system shown in Fig. 2, it is different from embodiment six it
Being in: second oily-water seperating equipment 23 is the cyclone separator with air-floating apparatus；The secondary air-floatation device
24 use air-dissolving air-float or shallow air-floatation device, and dephenolize device 25 is using hypergravity dephenolize machine.
In actual use, the second oily-water seperating equipment 23 is eddy flow-air bearing combination oily-water seperating equipment using rotation
Stream separator.The use of cyclone separator enhances oil-water separating function significantly, helps to simplify wastewater treatment line device configuration,
Reduce cost and occupied area.Secondary air-floatation device 24 uses air-dissolving air-float or shallow air-floatation device, to be further reduced waste water
In oil content, meet requirement to removing phenol in waste water in next step.Dephenolize device 25 uses hypergravity dephenolize machine, and dephenolize is high-efficient,
Equipment volume is small.
Embodiment eight:
According to the method for Fig. 1 and a kind of energy and water saving type low order fine coal low temperature pyrogenation system shown in Fig. 2, including
Stock ground fine coal is sieved, cleaned and is removed iron processing by fine coal pretreatment；
Fine coal is dry and preheats, and by pretreated fine coal and the hot semicoke being discharged by pyrolysis kiln discharge port, is sent into drying
In device 12, heat exchange is carried out by septate heat transfer in drier, preheater is sent into later and is further exchanged heat and removed
Moisture；
Pulverized coal pyrolysis, by dry and preheating hot fine coal toward pyrolysis kiln, in isolation air, 550~650 DEG C of temperature of condition
Under, it completes to be pyrolyzed by 15~30min；
Semicoke cooling heat transferring, by the semicoke that is generated after pulverized coal pyrolysis through pyrolysis kiln discharge port discharge, sub-fraction through conveying,
The particle semicoke of 3~10mm is sent into coarse filter 17 by screening, forms granular bed filters；It is most of to enter dry device 12 and feed inlet
The fine coal of addition, which exchanges heat, to cool down；
Pyrolysis gas coarse filtration and refined filtration, the pyrolysis gas that pyrolysis kiln generates initially enters coarse filter 17 through air guide mechanism, through semicoke
Grain bed first carries out coarse filtration, and coarse granule contained in gas and part particulate are filtered out, and it is further to enter back into fine filter 18 later
Essence filtering；
It is pyrolyzed air cooling and desulfurization, by coarse filtration and refined filtration treated clean pyrolysis gas, is introduced into coal gas primary cooler 19,
Through septate heat transfer degree of cooling, while cooling medium being made to heat up, is used for process system；The pyrolysis gas that primary cooler 19 is discharged enters
For dry and wet combination air cooler 20 further after cooling, pyrolysis gas enters the further removing mist of oil of electric trapper 21；
The separation of tar and sewage, the sedimentation tar collected by primary cooler 19, dry and wet combination air cooler 20 and electric trapper 21
And flushing liquor, first centralized collection is into oil-water collecting device 7, and tar is pumped into tar storage device 9 through tar later, and grease is mixed
It closes object and enters the first oily-water seperating equipment 8, through further water-oil separating, tar is sent into tar storage device 9, and oily waste water is sent into
Waste water treatment system；
Wastewater treatment, the second oil through the first oily-water seperating equipment 8 treated oily waste water enters waste water treatment system
Preliminary oil removal by air bubbling is carried out in water separation device 23, later again after secondary air-floatation oil removing, the waste water for meeting condition enters dephenolize
25 dephenolize of device, the organic wastewater feeding after dephenolize are produced water-coal-slurry device 26, to the low concentration wastewater that system generates, and are followed
The blowdown of ring water and sanitary sewage focus on conditioning tank and carry out biochemical and advanced treating.
In actual use, firstly, the partial size from stock ground to be not more than to the fine coal of 30mm, screened removal of impurities, except after iron,
Into in drier 12, and the hot semicoke being discharged by 14 discharge port of pyrolysis kiln, it is carried out together by septate heat transfer in drier
Heat exchange.In this course, semicoke cools off, and temperature is down to after water-spraying control further at dryer export passivation
60 DEG C or so feeding stockyards.Through pre-dried fine coal, the moisture of wherein most has been removed, and is sent later via conveying equipment
Enter preheater 13.In preheater 13 and carry out 350 DEG C or so of hot fume of 14 discharge port of self-pyrolysis kiln discharge by changing indirectly
Hot mode further exchanges heat, and the moisture in coal is further removed, while temperature rises to 180 ~ 200 DEG C, enters pyrolysis later
Kiln 14.The flue gas being discharged by preheater 13, a part send back to the hot-blast stove 15 of pyrolysis 14 heat supply of kiln as return air；Another part
It is arranged after remaining is up to standard through chimney in addition to part is used as the carrier gas of drier 12 and preheater 13 through desulphurization denitration and dust removal process
It puts.
It is sent to the hot fine coal of pyrolysis kiln 14 by preheater 13, is 700 DEG C of left sides through the temperature from hot-blast stove in pyrolysis kiln
The right further indirect heating of hot fume, temperature are gradually increased to 550~650 DEG C.In the absence of air conditions, by 15~
30min completes pyrolysis.The semicoke of generation is conveyed, is sieved of 3~10mm through pyrolysis 14 discharge port of kiln discharge, sub-fraction
Grain semicoke is sent into coarse filter 17, forms granular bed filters.Remaining part, and drying is sent by the semicoke that grain bed is discharged
Device 12, the wet coal being added together with feed end, which exchanges heat, to cool down.The pyrolysis gas that pyrolysis kiln 14 generates initially enters slightly through air guide mechanism
Filter 17 first carries out coarse filtration through semicoke grain bed, by coarse granule contained in gas and and part particulate filter out, enter back into later
Filter tube type high-temperature filter gives further essence filtering, and particle content can be obtained less than 10mg/m3Clean gas.Chimney filter
Filter is configured with nitrogen heating, pulse cleaning system, periodically pulse cleaning is carried out to chimney filter, to keep the filterability of chimney filter
Energy.
Through pyrolysis gas filter device treated clean pyrolysis gas, since temperature is still up to 500 DEG C or so, thus it is introduced into coal
Gas primary cooler 19 makes temperature be down to 150 DEG C or so through septate heat transfer, while water cooling medium heating being made to become steam, for technique
System uses.Conduction oil can also be used in cooling medium, and the conduction oil after heating can be used for the heat preservation of tank field equipment or pipeline or add
Heat.
The pyrolysis gas being discharged by primary cooler 19 enters dry and wet combination air cooler 20, through being further cooled to 20~40 later
DEG C, electric trapper 21 is then entered back into, is sent by blower pressurization to desulfurization process after further removing mist of oil.Since middle low temperature pyrogenation produces
Raw NH3 is seldom, thus pyrolysis desulfurization should be handled using sodium base desulfurizer and using PDS catalyst, be sent into gas later
Cabinet is spare.
The sedimentation tar and flushing liquor collected by primary cooler 19, dry and wet combination air cooler 20 and electric trapper 21 are first concentrated and are received
Collect in oil-water collecting device 7.Tar is pumped into tar storage device 9 through tar later, and oil water mixture enters the first grease
In separator 8, the first oily-water seperating equipment 8 used in the present embodiment is vertical separator, burnt through further water-oil separating
Oil is sent into tar tank, and oily waste water is sent into the second oily-water seperating equipment 23, the second oily-water seperating equipment 23 in the present embodiment
It is eddy flow-air floatation combination device.Through preliminary oil removal by air bubbling, later again after 24 oil removing of secondary air-floatation device, meet the useless of condition
Water enters Centrifugical extraction dephenolize.Organic wastewater after dephenolize still contains higher organic matter, and COD content is still higher.This part waste water
It directly sends to and produces water-coal-slurry, used for steam boiler, the purposes such as the flushing of the steam of generation for process system.To technique system
The low concentration wastewater and Circulating water effluent and sanitary sewage that system generates, focus on conditioning tank, then through biochemical treatment and depth
Rinsed after reason for semicoke passivation, coal yard dust suppression, road or terrace etc..The organic gas of loss of each equipment in tank field and sewage diposal area
Body is unified by the road after collecting, and the processing such as biological method, oxidative decomposition method, spray process heel row can be used and put.
The utility model is pre-processed by fine coal, fine coal is dry and preheating, pulverized coal pyrolysis, semicoke cooling heat transferring, pyrolysis gas
Coarse filtration and refined filtration, pyrolysis air cooling and desulfurization, the separation of tar and sewage and wastewater treatment method, improve oil-collecting ratio, eliminate
Traditional handicraft generates this drawback of a large amount of reluctant dregs of fat；The cleaning and safety for maintaining workplace, greatly save
Administer the cost of organic wastewater.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
In the absence of conflict, those skilled in the art can according to the actual situation will be relevant in above-mentioned each example
Technical characteristic is combined with each other, and to reach corresponding technical effect, will not repeat them here particularly for various combined situations.
The above, the preferred embodiment of near-sighted the utility model, the utility model are not intended to be limited to herein
Shown in these embodiments, 20 will meet the widest scope consistent with principles disclosed herein and novel features.
Any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention, still belong to
In the range of technical solutions of the utility model.The known portion of component and the structure category industry that the present embodiment does not describe in detail
Part and common structure or conventional means, do not describe one by one here.
Claims (9)
1. a kind of energy and water saving type low order fine coal low temperature pyrogenation system, it is characterised in that: including drying and preheating device (1), fine coal
Exchange heat pyrolysis installation (2), the first flue gas discharger (3), pyrolysis gas filter device (4), cooling device (5), desulfurizer
(6), oil-water collecting device (7), the first oily-water seperating equipment (8), tar storage device (9), waste water treatment system (10) and
Two flue gas dischargers (11)；The drying and preheating device (1) have a gas outlet, an air inlet, a feed inlet and
One discharge port, fine coal heat exchange pyrolysis installation (2) have an air inlet, two gas outlets i.e. fine coal heat exchange pyrolysis installation
First gas outlet and fine coal heat exchange the second gas outlet of pyrolysis installation, a discharge port and a feed inlet, the pyrolysis gas mistake
Filter device (4) has an air inlet, a gas outlet and a feed inlet, and the cooling device (5) has air inlet, one
A gas outlet and a discharge port, the oil-water collecting device (7) have a feed inlet, a discharge port and a water outlet
Mouthful, oil-water collecting device (7) has a feed inlet and two discharge ports；The gas outlet of the drying and preheating device (1) and the
The connection of one flue gas discharger (3), drying and preheating device (1) air inlet are connect with fine coal heat exchange the first gas outlet of pyrolysis installation,
The feed inlet of drying and preheating device (1) is connect with the discharge port of fine coal heat exchange pyrolysis installation (2), and drying and preheating device (1) goes out
Material mouth is connect with the feed inlet of fine coal heat exchange pyrolysis installation (2)；The air inlet and drying and preheating of fine coal heat exchange pyrolysis installation (2) fill
The connection of (1) gas outlet is set, fine coal heat exchange the second gas outlet of pyrolysis installation is connect with the air inlet of pyrolysis gas filter device (4), heat
The discharge port of feed inlet and fine coal heat exchange pyrolysis installation (2) of filter device (4) of venting one's spleen is connect；Pyrolysis gas filter device (4)
Gas outlet is connect with cooling device (5) air inlet, and the gas outlet of cooling device (5) connects desulfurizer (6), cooling device (5)
Discharge port is connect with oil-water collecting device (7) feed inlet, the discharge port and tar storage device of oil-water collecting device (7)
(9) it connects, another discharge port of oil-water collecting device (7) is connect with the feed inlet of the first oily-water seperating equipment (8), the first oil
The discharge port of water separation device (8) is connect with tar storage device (9), the water outlet and waste water of the first oily-water seperating equipment (8)
Processing system (10) connection, waste water treatment system (10) are also connected with the second flue gas discharger (11).
2. a kind of energy and water saving type low order fine coal low temperature pyrogenation system as described in claim 1, it is characterised in that: described is dry
Dry preheating device (1) includes drier (12) and preheater (13)；Drier (12) is provided with inlet port and outlet port, preheater
(13) feed inlet, discharge port, gas outlet and air inlet are provided with；Drier (12) discharge port and the feed inlet of preheater (13) connect
It connects, drier (12) feed inlet is connect with the discharge port of fine coal heat exchange pyrolysis installation (2), the discharge port and fine coal of preheater (13)
The feed inlet connection of heat exchange pyrolysis installation (2), the gas outlet of preheater (13) connect with the first flue gas discharger (3), preheat
The air inlet of device (13) is connect with fine coal heat exchange (2) first gas outlets of pyrolysis installation.
3. a kind of energy and water saving type low order fine coal low temperature pyrogenation system as described in claim 1, it is characterised in that: the powder
Coal exchanges heat pyrolysis installation (2) including being pyrolyzed kiln (14) and hot-blast stove (15)；The pyrolysis kiln (14) has an air inlet, two
Gas outlet, that is, fine coal heat exchange the first gas outlet of pyrolysis installation and fine coal heat exchange the second gas outlet of pyrolysis installation, a discharge port and one
The air inlet of a feed inlet, pyrolysis kiln (14) is connect with hot-blast stove (15) gas outlet；Hot-blast stove (15) air inlet and drying and preheating
The gas outlet of device (1) connects；The discharge port of pyrolysis kiln (14) is connect with the feed inlet of drying and preheating device (1), is pyrolyzed kiln
(14) feed inlet is connect with the discharge port of drying and preheating device (1).
4. a kind of energy and water saving type low order fine coal low temperature pyrogenation system as described in claim 1, it is characterised in that: described the
One flue gas discharger (3) and the second flue gas discharger (11) are made of flue gas processing device and chimney.
5. a kind of energy and water saving type low order fine coal low temperature pyrogenation system as described in claim 1, it is characterised in that: the heat
Filter device (4) of venting one's spleen includes sifter (16), coarse filter (17) and fine filter (18), the air inlet and fine coal of coarse filter (17)
The gas outlet connection of heat exchange pyrolysis installation (2), the gas outlet of coarse filter (17) are connect with the air inlet of fine filter (18), fine filter
(18) gas outlet is connect with cooling device (5) air inlet, feed inlet and the fine coal heat exchange pyrolysis installation (2) of sifter (16)
Discharge port connection, the discharge port of sifter (16) are connect with the feed inlet of coarse filter (17).
6. a kind of energy and water saving type low order fine coal low temperature pyrogenation system as described in claim 1, it is characterised in that: described is cold
But device (5) includes primary cooler (19), dry and wet combination air cooler (20) and electric trapper (21), the air inlet of the primary cooler (19)
Mouthful connect with the gas outlet of pyrolysis gas filter device (4), the gas outlet of primary cooler (19) and dry and wet combination air cooler (20) into
Port connection, the gas outlet of dry and wet combination air cooler (20) are connect with desulfurizer (6), and primary cooler (19), dry and wet joint are air-cooled
The discharge port of device (20) and electric trapper (21) is connect with the feed inlet of oil-water collecting device (7).
7. a kind of energy and water saving type low order fine coal low temperature pyrogenation system as described in claim 1, it is characterised in that: described is de-
Sulphur device (6) is connect by blower (22) with cooling device (5).
8. a kind of energy and water saving type low order fine coal low temperature pyrogenation system as described in claim 1, it is characterised in that: described is useless
Water treatment system (10) includes the second oily-water seperating equipment (23), secondary air-floatation device (24), dephenolize device (25), produces water coal
Sizing device (26) and steam boiler (27)；The input terminal and the first oily-water seperating equipment of second oily-water seperating equipment (23)
(8) output end connection, the output end of the second oily-water seperating equipment (23) are connect with the input terminal of secondary air-floatation device (24), and two
Grade air-floating apparatus (24) output end connect with the input terminal of dephenolize device (25), the output end of dephenolize device (25) with produce water
The input terminal of coal slurry device (26) connects, and the input terminal of the output end and steam boiler (27) of producing water-coal-slurry device (26) connects
It connects, the output end of steam boiler (27) is connect with the second flue gas discharger (11).
9. a kind of energy and water saving type low order fine coal low temperature pyrogenation system as claimed in claim 8, it is characterised in that: described the
Two oily-water seperating equipments (23) are the cyclone separator with air-floating apparatus；The secondary air-floatation device (24) uses molten gas gas
Floating or shallow air-floatation device；Dephenolize device (25) is using hypergravity dephenolize machine.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109504413A (en) * | 2018-12-14 | 2019-03-22 | 中国重型机械研究院股份公司 | A kind of energy and water saving type low order fine coal low temperature pyrogenation system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109504413A (en) * | 2018-12-14 | 2019-03-22 | 中国重型机械研究院股份公司 | A kind of energy and water saving type low order fine coal low temperature pyrogenation system and method |
| CN109504413B (en) * | 2018-12-14 | 2024-03-05 | 中国重型机械研究院股份公司 | Water-saving energy-saving low-order pulverized coal low-temperature pyrolysis system and method |
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