CN108587663B - A kind of coking coal pre-heating and drying mechanism - Google Patents
A kind of coking coal pre-heating and drying mechanism Download PDFInfo
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- CN108587663B CN108587663B CN201810180775.XA CN201810180775A CN108587663B CN 108587663 B CN108587663 B CN 108587663B CN 201810180775 A CN201810180775 A CN 201810180775A CN 108587663 B CN108587663 B CN 108587663B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
- C10B57/10—Drying
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Abstract
A kind of coking coal pre-heating and drying mechanism, including alternating vertical preheating and drying room and heating pad wall successively arranged side by side, heating pad wall is separated into multiple horizontal flues, heat gas in two neighboring heating pad wall is reverse flow, two column blenders are equipped in vertical preheating and drying room, the reverse flow of heat gas between two column blenders, and one column blender with the heat gas in heating pad wall adjacent thereto be also reverse flow, it is stirring pipe in the middle part of blender, there are axis drum and beam barrel in stirring pipe both ends respectively, the beam barrel of side is equipped with the gear of driving blender rotation, the direction of rotation of two column blenders is opposite, vertical preheating and drying room bottom is installed by lower hopper, top is equipped with the hole of coalingging with port lid.External heat in the present invention is association of activity and inertia, avoid administered again after directly heating method pollution, the problems such as dust is explosive, overcome the problems such as indirect static heating thermal resistance is big, the thermal efficiency is low, equipment size is big, processing cost is high, for from source pollution control dye provide guarantee.
Description
Technical field
The present invention relates to a kind of coking coal pre-heating and drying mechanisms, belong to the dry field of coal prewarming, preheated for coking coal,
Low-order coal is dry and is pyrolyzed, it can also be used to organic solid particles, powder preheating and drying and pyrolysis etc..
Background technique
Coal resources in China very abundant, but coking coal resource but relative deficiency, China's coking coal accounts for about always according to statistics
The 1/3 of reserves, wherein coking coal only accounts for 10%, and bottle coal accounts for 60%.In order to expand coking coal resource, meet blast furnace enlargement refining
The quality requirement of iron STRENGTH ON COKE uses TAMPING COKING PROCESS at present, realizes the polygamy bottle coal in coking mixed coal, matches coking coal less,
Tamping coking accounts for about the 1/4 of coking total amount.Tamping coking is to utilize tamping tool, tamping briquette, the side for increasing cooperation dump density
Method, this method need large-scale tamping machine, need mixed coal moisture regulation that can just make into briquette firm by ramming to 10% or so, make firm by ramming
Machinery investment is big, complicated for operation.In process of coking in mixed coal 10% or so moisture, not only influence charge of coke center heating,
Influence coke oven hot working efficiency, it is often more important that this some residual moisture (remained ammonia) eventually becomes phenol-cyanogen sewage, pollutes ring
Border, needs tertiary treatment ability qualified discharge, and processing is complicated, costly.
Preheating coal coking is that coking mixed coal is preheating to 200 DEG C, its moisture is made to be reduced to 0%, refills furnace and carries out coking
A kind of new method.Studies have shown that preheating coal coking be expand coking coal resource, reduce energy consumption, become phenol-cyanogen sewage end control
Reason is the good method of source control.Coking mixed coal is after preheating and drying, due to cooperating the evaporation of moisture in coal, coal particle table
Moisture film tension is eliminated between face, and mixed coal mobility enhancing, heap density can achieve 0.90kg/cm3, using preheating coal coking,
It can achieve the same mass effect of tamping coking.Simultaneously as the evaporation of cooperation moisture in coal, the treating capacity of phenol-cyanogen sewage can
To reduce 85%；The time that Center Temperature of Coke Cake rests on 100 DEG C reduces, and coking time can reduce 5 hours or so, and coke oven produces
25% can be can be improved；Moisture is every to reduce by 1%, and coking heat consumption can reduce 58-67kj/kg. butt, and energy consumption can reduce by 18%
More than.
It preheats there are two types of coal coking methods, first is that preheating and drying method is directly heated, second is that indirect heating preheating and drying side
Method.Directly heating preheating and drying method is that mixed coal is directly contacted with heat carrier, and what is generallyd use has fluidized bed, ebullated bed, returns
The equipment such as rotary kiln.These equipment advantages are thermal efficiency height, and treating capacity is big；The disadvantage is that flue gas or air cleaning are difficult, multistage is needed
Dedusting has the security risk of dust explosion and the pollution problem of dust, need to build coal store and strength Transporting equipment, occupied area
Greatly, processing cost is high.Indirect heating preheating and drying method is that mixed coal is not directly contacted with heat carrier, and what is generallyd use has revolution
Kiln, fixed bed unit.Rotary kiln is divided into inside and outside heating, and wherein interior partition heating equipment needs superheated steam or leads
Hot oil heat medium, high production cost seldom use now；External partition heating equipment mixed coal can only filling cylinder one
Half, effective heating surface (area) (HS also only has the half of cylinder area, and equipment is huge, need to build coal store and strength Transporting equipment.Fixed bed
Equipment is using coiled pipe or coil pipe partition the heating mixed coal installed in a device, and hot fume does not contact directly with mixed coal,
Advantage is that evaporation water can recycle, and does not need flue gas ash removal, pollution-free, is not required to build coal store and strength Transporting equipment, operation letter
It is single, it invests low；The disadvantage is that heating surface (area) (HS is insufficient, mixed coal static heating thermal resistance is big, and heating is uneven, and the preheating and drying time is long,
Heat transfer efficiency is low etc., and production capacity is low.
Summary of the invention
The purpose of the present invention is change the country to directly heat preheating and drying method and indirect heating preheating and drying square law device
Existing defect develops the outer heat of heating pad wall, blender internal heat type coking coal pre-heating and drying mechanism.This device is by multiple vertical
Preheating and drying room heating pad wall, which alternates, to be composed in parallel, and is heating pad wall at left and right sides of each vertical preheating and drying room, vertical pre-
It is that blender installs wall before and after heated drying room, longitudinal direction two rows of multiple blenders of installation up and down arranged side by side, this to add on each pair of heating pad wall
Heating, the heating of blender inside and agitating device outside hot wall, heating surface (area) (HS is big, homogeneous heating, and heat transfer efficiency is high, treating capacity
Greatly, production capacity is high, and vertical preheating and drying building volume is small, may be mounted at the top of coke oven, replaces charging car, realizes closed dress
Coal does not need multistage dedusting, not the pollution problem of the security risk of dust explosion and dust, is not required to build coal store and strength fortune
Equipment is sent, technical process is environmentally friendly, safe and reliable, can be widely used for coking mixed coal preheating and drying.
To achieve the goals above, the outer heat of the heating pad wall of exploitation, blender internal heat type coking coal pre-heating and drying mechanism, by more
A vertical preheating and drying room and heating pad wall are alternated and are composed in parallel, and the quantity and volume of vertical preheating and drying room parallel connection are according to refining
Coke oven production capacity determines.Each vertical preheating and drying room is the cavity of rectangle, contains the cooperation for wanting preheating and drying in cavity space
Coal, the vertical preheating and drying room left and right sides are heating pad wall, and front and back two sides is stirring wall, for installing blender.It is each vertical
The heating pad wall of preheating and drying room two sides is also a cavity, is separated into multiple horizontal heating flues up and down, matches for preheating and drying
Close coal；Two sides is stirring wall before and after vertical preheating and drying room, longitudinal on stirring wall to install multiple blenders side by side, in blender
Portion heats and stirs, and is used for internal preheating and drying mixed coal, increases heating surface (area) (HS, reduces thermal resistance, increases gas permeability, reduces preheating
Drying time makes to be heated evenly, and heat transfer efficiency is high.The top of each vertical preheating and drying room is installed by hole of coalingging with cover, bottom
Blanking tube is installed.
Stirring beam barrel, axis drum of the blender by both ends, and multiple horizontal stirring pipes are constituted among it, intermediate multiple stirring pipes
By the axis drum on both sides, it is connected to the stirring beam barrel at both ends.Axis drum is that two ports have drum surface, short cylinder,
Level is put.Axis drum on the left side, exterior side port weld the disk that a center has axis hole, and inboard port welds one
Disk with multiple airflow holes；And the disk for having multiple airflow holes is welded in axis drum on the right, inboard port,
Exterior side port welds the disk that a center has axis hole.In left and right axis drum inboard, the center with airflow hole disk, open
There is central gas discharge orifice, on central gas discharge orifice periphery, is provided with multiple airflow holes, center stirring pipe in a manner of around central gas discharge orifice
The port at both ends and the welding of left and right two central gas stream holes, horizontal connection, the port at several stirring pipe both ends and peripheral gas flow
Hole welding, several teeter columns of vertical welding between multiple stirring pipes.The center of axis drum outer side band axis hole disk on the left side,
With one stirring beam barrel of center stirring pipe coaxial welding；The center of axis drum outer side band axis hole disk on the right, is stirred with center
One stirring beam barrel of pipe coaxial welding is mixed, respectively there is a bearing shell on two stirring beam barrels, blender stirs beam barrel by two
Bearing shell is mounted on the axle sleeve of stirring wall.Heat gas can be roused by stirring beam barrel, the axis on the left side, into intermediate multiple stirrings
Pipe, then the axis drum by the right, stirring beam barrel discharge, so as to form a horizontal heating channel.In vertical preheating and drying room
Interior, blender reduces thermal resistance, increases gas permeability, homogeneous heating increases outside heat-transfer effect, blender in addition to playing stirring mixed coal
Heating surface (area) (HS is also greatly increased, plays internal heat effect, solves that static indirect heating mixed coal thermal resistance is big, heating time
Long, the low problem of heat transfer efficiency.
The outer heat of heating pad wall, blender internal heat type coking coal pre-heating and drying mechanism, by multiple vertical preheating and drying room parallel connection groups
At, on the stirring wall of each vertical preheating and drying room, all the two rows of blenders in installation left and right, every row's blender are made of multiple,
There is certain interval up and down；Two blenders of the same horizontal position or so stir, and have certain interval.A vertical preheating and drying wherein
Room is stirred on wall, and two rows of blenders are relatively equipped with blender end to end, and wherein left bank gear rotates counterclockwise, from front end airflow
Rear end outlet is fitted with rotate gear on gas side agitating shaft cylinder out up and down, is driven and is rotated by motor by chain；And
Right toothrow wheel rotates clockwise, and from rear end air inlet front end, outlet is fitted with turning gear on gas side agitating shaft cylinder out up and down
Wheel is driven by motor also by chain and is rotated.
In the front end of this vertical preheating and drying room, before left bank blender, have a blender from top to bottom into
Tracheae, each air inlet pipe pass through air inlet threeway and are connected with the stirring beam barrel of blender, and mode of communicating is air inlet threeway nozzle
Insertion stirring beam barrel, packing seal have a control valve on each threeway, for distribution of air flow, adjust into every
A blender heating gas flow.In the rear end of this vertical preheating and drying room, behind left bank blender, i.e., with gear
Beam barrel side is stirred, equally has a blender escape pipe from top to bottom, each stirring beam barrel with gear passes through outlet threeway
It is connected with blender escape pipe, mode of communicating is stirring beam barrel insertion outlet tee tube, packing seal.Heat gas is from air inlet
Pipe is by threeway and its regulating valve, into the stirring beam barrel of blender, by axis drum, into stirring pipe, using axis drum, by band
The stirring beam barrel of gear is discharged, to form a horizontal heating channel.
Equally, in the rear end of this vertical preheating and drying room, behind right row's blender, there is a stirring from top to bottom
Device air inlet pipe, each air inlet pipe pass through air inlet threeway and are connected with the stirring beam barrel of blender, and mode of communicating is also air inlet three
Siphunculus mouth insertion stirring beam barrel, packing seal has a control valve on each air inlet threeway, for distribution of air flow,
It adjusts and enters each blender heating gas flow.In the front end of this vertical preheating and drying room, before left bank blender, i.e.,
In the stirring beam barrel side with gear, equally there are one plus blender escape pipe, each stirring beam barrel with gear from top to bottom
It is connected by outlet threeway with escape pipe, mode of communicating is stirring beam barrel insertion outlet tee tube, packing seal.Heat gas
From air inlet pipe by air inlet threeway and its regulating valve, by the stirring beam barrel of blender, by axis drum, into horizontal stirring pipe, then
By axis drum, finally from the stirring beam barrel discharge with gear.
Heat gas discharges heat by the blender of two rows of reverse flow heat gas in this way, carries out internal heating, dry
Dry material；The blender of two rows of backwards rotations simultaneously, constantly upwards stirs cooperation mixed coal, elimination thermal resistance, homogeneous heating,
The preheating and drying time is reduced, heat transfer efficiency is improved.
In the left and right sides of this vertical preheating and drying room, respectively there is a heating pad wall, each heating pad wall is a rectangle
Cavity, several horizontal flues are divided by partition up and down.Heating pad wall on the left of this vertical preheating and drying room, in this heating
Behind wall rear end, there is a heating pad wall air inlet pipe from top to bottom, air inlet pipe passes through air inlet and every layer of heating pad wall horizontal cigarette
Road is connected, and the pore size of each air inlet is different, to adjust every layer of air flue air inflow uniform balance；Before this heating pad wall
Before end, also there is a heating pad wall escape pipe from top to bottom, every layer of air flue of heating pad wall is connected by venthole with escape pipe.
There is air inlet in horizontal flue one end, and the other end has venthole.
Heating pad wall on the right side of this vertical preheating and drying room, before this heating pad wall front end, have one from it is lower to
On heating pad wall air inlet pipe, air inlet pipe is connected by air inlet with every layer of air flue of heating pad wall, the pore size of each air inlet
Difference, to adjust every layer of air flue air inflow uniform balance；Behind this heating pad wall rear end, also there is a heating from top to bottom
Wall escape pipe, every layer of air flue of heating pad wall are connected by venthole with escape pipe.
Heat gas between two heating pad walls is reverse flow；Heat gas between two adjacent blenders is
Reverse flow；Heat gas between all blenders and heating pad wall is also reverse flow.It can make mixed coal in this way
Homogeneous heating.The vertical preheating and drying room of multiple parallel connections and heating pad wall are all arranged so, successively alternately reverse air inlet and outlet.
At the top of each vertical preheating and drying room, all there are 2-4 holes of coalingging, hole of each coalingging is equipped with a hole of coalingging
Lid, for being packed into mixed coal.On the hole both sides of coalingging in each vertical preheating and drying ceiling portion, a vapor outlet is respectively installed
Pipe.In each vertical preheating and drying room bottom, 2-4 lower hopper is all installed, and have heat tracing pipe heat preservation, prevents dry mixed coal
Moisture condensation and under the influence of coal in the lower part of each discharge bucket one blanking tube is installed, and be respectively equipped with a gate valve, release cooperation
Coal is packed into the carbonization chamber of coke oven.It is packed into the mixed coal of vertical preheating and drying room by hole of coalingging, absorbs from the outer of heating pad wall
Portion's heat and the heat inside blender, the free moisture steam raising in mixed coal, are arranged by vapor escape pipe
Out, it recycles heat and moisture, the mixed coal of preheating and drying is periodically discharged in vertical preheating and drying room by discharge bucket, be packed into refining
Coke furnace carbonization chamber.
The outer heat of heating pad wall provided by the invention, blender internal heat type coking coal pre-heating and drying mechanism, inside and outside dynamic heat face
Product is big, and thermal resistance is small, good permeability, homogeneous heating, and heat transfer efficiency is high, and equipment volume is small, and production unit is reproducible, production capacity
It is high；Novel mixer realizes dynamic heat, considerably increases heating surface (area) (HS；The self gravity for efficiently utilizing material carries out
It feeds, slag tap；It is sufficiently used the hydromechanical property of heat gas, lateral biserial list backhaul parallel connection heating.Device can be with
It build at the top of coke oven, replaces side shove charge tamping tool, or replace top shove charge charging car, realization is closed to coaling, and utilizes coke oven cigarette
Gas waste heat, preheating and drying coking mixed coal increase heap density, expand coking coal resource, and it is dirty to reduce phenol cyanogen for removal cooperation moisture content of coal
Coking time is shortened in the generation of water, improves production capacity.
External heat in the device is association of activity and inertia, avoid administered again after directly heating method pollution, dust is explosive etc.
Problem overcomes the problems such as indirect static heating thermal resistance is big, the thermal efficiency is low, equipment size is big, processing cost is high.For reasonable land productivity
With China's bottle coal resource abundant, meet the quality requirement of blast furnace ironmaking STRENGTH ON COKE, shortens coking time, improve the life of coke oven
Production capacity power and hot working efficiency control the generation of phenol-cyanogen sewage from source, alleviate aqueous vapor pollution and provide guarantee.
Detailed description of the invention
Fig. 1 is the outer heat of vertical heating pad wall, blender internal heat type coking coal pre-heating and drying mechanism structural schematic diagram.
Fig. 2 is the position the A-A horizontal sectional view of Fig. 1.
Fig. 3 is the position the B-B left view sectional view of Fig. 1.
Fig. 4 is the position the C-C left view sectional view of Fig. 1.
Fig. 5 is the position the D-D left view sectional view of Fig. 1.
Fig. 6 is the position the E-E left view sectional view of Fig. 1.
Fig. 7 is the top view for a pair of of the blender being horizontally mounted.
Fig. 8 is the structural schematic diagram of blender left and right ends an air inlet pipe threeway and escape pipe threeway in Fig. 4.
Fig. 9 is the double blender schematic perspective view in vertical preheating and drying room.
Figure 10 is the schematic perspective view of four axis drum in a pair of of blender.
Wherein: 1, heating pad wall, 2, vertical preheating and drying room, 3, blender, 4, hole of coalingging, 5, lid of coalingging, 6, escape pipe, 7,
Lower hopper, 8, blanking tube, 9, gate valve, 10, horizontal flue, 11, partition, 12, heating air inlet pipe, 13, heating escape pipe, 14,
Air inlet, 15, venthole, 16, stirring air inlet pipe, 17, stirring escape pipe, 18, air inlet threeway, 19, outlet threeway, 20, air inlet
Regulating valve, 21, stirring beam barrel, 22, axis drum, 23, stirring pipe, 24, gear, 25 heat tracing pipes, 26, stirring wall, 27, teeter column.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and example is served only for explaining invention, not
For limiting the scope of the invention.
Such as Fig. 1-10, coking coal pre-heating and drying mechanism, it is characterised in that the device includes multiple vertical 2 Hes of preheating and drying room
Multiple heating pad walls 2, the vertical preheating and drying room 2 and heating pad wall 1 are alternated and are successively arranged side by side, and each vertical preheating is dry
A heating pad wall 1 is equipped at left and right sides of dry room 2, each vertical preheating and drying room 2 is the cavity of rectangle, vertical preheating and drying
2 front and back two sides of room is stirring wall 26, stirs and is equipped with one or more pairs of horizontally disposed blenders 3, described a pair on wall 26
Or multipair blender 3 is divided into two column of left and right by column；
Each heating pad wall 1 is also the cavity of rectangle, and the heating pad wall 1 is separated into multiple horizontal flues by about 11 partition
10, one end of each horizontal flue 10 is respectively communicated with a vertical heating air inlet pipe 12, and the other end is respectively communicated with one vertically
Heat escape pipe 13, and the heating air inlet pipe 12 of a heating pad wall 1 and heating escape pipe 13 adding with heating pad wall 1 adjacent thereto
Hot air inlet pipe 13 and heating escape pipe 14 are arranged in opposite direction, to realize that the heat gas in two neighboring heating pad wall 1 is reverse
Flowing；
Each blender 3 includes multiple stirring pipes 23 positioned at 3 middle part of blender, and the both ends of stirring pipe 23 are respectively communicated with
On the axis drum 22 at both ends, the outside of two axis drums 22 is respectively communicated with beam barrel 21, respectively there is a bearing shell, the stirring wall on beam barrel 21
Axle sleeve is installed on 26, the blender 3 is mounted in the axle sleeve of the stirring wall 26 by the bearing shell on both ends beam barrel 21,
And respectively there is the external port of two column beam barrels 21 on the lateral surface of front and back two sides stirring wall 26；
The front and rear sides of each vertical preheating and drying room 2 are equipped with a vertical stirring air inlet pipe 16 and one vertically
Escape pipe 17 is stirred, in each two column beam barrel, 21 external port in the front and back, all column outer ends close to the heating air inlet pipe 12
Mouth is connected with stirring escape pipe 17, and the column external port close to the heating escape pipe 13 is connected with stirring air inlet pipe 16,
To realize the reverse flow of the heat gas between two column blenders 3, while realizing a column blender 3 with heating adjacent thereto
Heat gas in wall 1 is reverse flow；
The axis drum 22 is the hollow oblate cylinder an of axis horizontal, and 22 outer side center of axis drum is axis hole, inboard is equipped with
The both ends of multiple airflow holes, the stirring pipe 33 are mounted in airflow hole；Heat gas is entered by stirring air inlet pipe 16 to be stirred
The beam barrel 21 of 3 one end of device, one end of axis drum 22 and stirring pipe 23 are mixed, and successively passes through the end from the other end of the stirring pipe 23
Axis drum 22, be discharged into stirring escape pipe 17 after beam barrel 21, horizontal heat channel so as to form one；Vertical pre-
In heated drying room 2, blender 3 reduces thermal resistance, homogeneous heating increases heat-transfer effect, increases gas permeability in addition to playing stirring low-order coal
Outside, blender 3 also greatly increases heating surface (area) (HS, plays internal heat effect, solve static indirect heating low-order coal thermal resistance it is big,
Heating time is long, heat transfer efficiency is low, poor air permeability problem；
Gear 24 is additionally provided on the beam barrel 21 of 23 side of stirring pipe, external impetus is by driving gear 24 to make 3 turns of blender
It is dynamic, and in same vertical preheating and drying room 2 two column blenders 3 direction of rotation it is opposite；
A wherein column for 2 liang of the vertical preheating and drying room column blender 3 rotate counterclockwise, and from front end airflow rear end
Outlet, another column then rotate clockwise, from rear end air inlet front end outlet；Or wherein the one of vertical 2 liang of column blenders 3 in pyrolysis chamber
Column rotate clockwise, and from front end airflow rear end outlet, another column are then rotated counterclockwise, from rear end air inlet front end outlet；
Heat gas between two adjacent blenders 3 is reverse flow；Heat gas is reverse by two column in this way
The blender 3 of heat gas is flowed, heat is discharged, carries out internal heating, dried material；The blender of two column backwards rotations simultaneously
3, cooperation low-order coal constantly to be stirred upwards, eliminates thermal resistance, homogeneous heating reduces the fast pyrogenation time, heat transfer efficiency is improved,
Increase gas permeability.
Heat gas between all blenders 3 and heating pad wall 1 is also reverse flow.Low-order coal can be made to add in this way
It is hot uniform.Multiple vertical pyrolysis chambers 2 existed side by side and heating pad wall 1 are all arranged so, successively alternately reverse air inlet and outlet；
The bottom installation lower hopper 7 of each vertical preheating and drying room 2, top are equipped with hole 4 of coalingging, and hole 4 of coalingging is with dress
Coal lid 5；On 4 both sides of hole of coalingging at each vertical 2 top of preheating and drying room, a vapor escape pipe 6 is respectively installed.
Picture 1-4,7,9, the coking coal pre-heating and drying mechanism, it is characterised in that the stirring pipe 23 is with horizontally disposed
Mode be mounted between two axis drums 22.Obviously horizontally disposed to be conducive to uniform stirring.
The coking coal pre-heating and drying mechanism, it is characterised in that the stirring pipe 23 by compared with horizontal plane it is inclined in a manner of pacify
Between two axis drums 22.
The coking coal pre-heating and drying mechanism, it is characterised in that further include a center stirring in the stirring pipe 23
Pipe, the center stirring pipe is arranged on the axis between two axis drums 22, and the both ends of center stirring pipe are respectively communicated with
The central location of two 22 medial surfaces of axis drum.
Such as Fig. 7, the coking coal pre-heating and drying mechanism, it is characterised in that be additionally provided with teeter column in each stirring pipe 23
27, the axis of the teeter column 27 is vertical with the axis of stirring pipe 23 where it, to be sufficiently stirred and be added to coal cinder
The structural strength of strong mixing pipe 23.
Such as Fig. 1,3,4, the coking coal pre-heating and drying mechanism, it is characterised in that the lower part in each discharge bucket 7,
One blanking tube 8 is installed, and blanking tube 8 is respectively equipped with a gate valve 9, releases mixed coal, be packed into the carbonization chamber of coke oven.
Such as Fig. 3,4, the coking coal pre-heating and drying mechanism, it is characterised in that the periphery of each lower hopper 7 also
Be surrounded by the heat preservation of heat tracing pipe 25, prevent dry mixed coal condense and under the influence of coal.
Such as Fig. 8, the coking coal pre-heating and drying mechanism, it is characterised in that the stirring air inlet pipe 16 by into
Gas threeway 18 is connected to beam barrel 21, and mode of communicating is in the beam barrel 21 that the nozzle insertion of air inlet threeway 18 communicates therewith；Each institute
The stirring escape pipe 17 stated is connected to by outlet threeway 19 with beam barrel 21, mode of communicating be the external port of the beam barrel 21 be inserted into and its
In the outlet threeway 19 communicated.
Such as Fig. 8, the coking coal pre-heating and drying mechanism, it is characterised in that be additionally provided with air inlet tune in the air inlet threeway 18
Save valve 20.
The coking coal pre-heating and drying mechanism, it is characterised in that each horizontal flue is equipped with air inlet 14, and leads to
Cross air inlet 14 with heating air inlet pipe 12 be connected to, the aperture of air inlet 14 is successively successively decreased from bottom to top, with adjust every layer of flue into
Tolerance uniform balance.
Application method of the invention
The outer heat of vertical heating pad wall, blender internal heat type coking coal pre-heating and drying mechanism are suitble to the dry of coking mixed coal or face coal
It is dry.Firstly, closing the gate valve on blanking tube, the blender in a preheating and drying is started, blender is allowed to be in stirring.
Then, 250 DEG C or so of hot fume for dividing flue from coke oven is opened, hot fume divides two-way to enter preheating and drying dress
It sets, first via hot fume enters from heating pad wall air inlet pipe lower part, by respective air inlet, into all horizontal flues, in water
Flat flue releases heat, forms the external heat source of vertical preheating and drying room, cold flue gas then passes through venthole, is arranged by heating pad wall escape pipe
Out.Second tunnel hot fume is entered by blender air inlet bottom of the tube, and hot fume is by respective air inlet threeway, into all stirrings
Device discharges heat in blender, forms the inner heat source of vertical preheating and drying room, cold flue gas then passes through outlet threeway, by stirring
The discharge of device escape pipe.Heat tracing pipe hot fume is opened, to prevent coal under the influence of dry mixed coal moisture condensation.
Meanwhile charging hole lid is opened, it is packed into coking mixed coal.After mixed coal is packed into vertical preheating and drying room, heating is absorbed
The heat that wall, blender section pass over, blender start to stir, and blender increases hot heating surface (area) (HS, and thermal resistance reduces, and increase
Gas permeability reduces heating time, makes homogeneous heating, increases heat-transfer effect, improves production capacity.The water that preheating and drying is evaporated
Steam is discharged by vertical preheating and drying room both the above escape pipe, by recycling heat and moisture after heat exchange.It is dry by preheating
The dry mixed coal for reaching 200 DEG C or so periodically passes through blanking tube and is packed into carbonization chamber.Temperature is about 150 after cold flue gas releases heat
DEG C or so discharge.
Claims (10)
1. a kind of coking coal pre-heating and drying mechanism, it is characterised in that the device includes multiple vertical preheating and drying rooms (2) and multiple
Heating pad wall (1), the vertical preheating and drying room (2) and heating pad wall (1) are alternated and are successively arranged side by side, and each vertical preheating
It is equipped with a heating pad wall (1) at left and right sides of hothouse (2), each vertical preheating and drying room (2) is the cavity of rectangle, vertical
Two sides is stirring wall (26) before and after preheating and drying room (2), is equipped with one or more pairs of horizontally disposed stirrings in stirring wall (26)
Device (3), one or more pairs of blenders (3) are divided into two column of left and right by column；
Each heating pad wall (1) is also the cavity of rectangle, and the heating pad wall (1) is separated into multiple horizontal cigarettes by partition (11) up and down
Road (10), one end of each horizontal flue (10) are respectively communicated with a vertical heating air inlet pipe (12), and the other end is respectively communicated with
Piece vertical heating escape pipe (13), and the heating air inlet pipe (12) of heating pad wall (1) and escape pipe (13) are heated with therewith
The heating air inlet pipe (13) of adjacent heating pad wall (1) and heating escape pipe (14) are arranged in opposite direction, to realize two neighboring add
Heat gas in hot wall (1) is reverse flow；
Each blender (3) includes multiple stirring pipes (23) in the middle part of blender (3), and the both ends of stirring pipe (23) connect respectively
Lead on the axis drum (22) at both ends, is respectively communicated with beam barrel (21) on the outside of two axis drums (22), respectively there is an axis on beam barrel (21)
Watt, axle sleeve is installed, the blender (3) is mounted on institute by the bearing shell on both ends beam barrel (21) on the stirring wall (26)
Respectively there is the external port of two column beam barrels (21) in the axle sleeve for stating stirring wall (26), and on the lateral surface of front and back two sides stirring wall (26)；
The front and rear sides of each vertical preheating and drying room (2) are equipped with a vertical stirring air inlet pipe (16) and vertical stirring
Escape pipe (17), in each two column beam barrel (21) external port in the front and back, all column close to heating air inlet pipe (12) are outer
Port is connected with stirring escape pipe (17), close to the column external port and stirring air inlet pipe (16) of heating escape pipe (13)
Be connected, with realize two column blenders (3) between heat gas reverse flow, while realize a column blender (3) with
Adjacent heating pad wall (1) in heat gas be reverse flow；
The axis drum (22) is the hollow oblate cylinder an of axis horizontal, and axis drum (22) outer side center is axis hole, inboard is equipped with
The both ends of multiple airflow holes, the stirring pipe (23) are mounted in airflow hole；Heat gas by stirring air inlet pipe (16) into
Enter the beam barrel (21) of blender (3) one end, one end of axis drum (22) and stirring pipe (23), and from the another of the stirring pipe (23)
End is successively discharged after the axis drum (22) at the end, beam barrel (21) into stirring escape pipe (17), so as to form one
Heat channel；
It is additionally provided with gear (24) on the beam barrel (21) of stirring pipe (23) side, external impetus is by driving gear (24) to make blender
(3) rotate, and in same vertical preheating and drying room (2) two column blenders (3) direction of rotation it is opposite；
Bottom installation lower hopper (7) of each vertical preheating and drying room (2), top are equipped with and coaling hole (4), and hole of coalingging (4) band
It coalings lid (5)；A vapor escape pipe (6) is respectively installed on hole of coalingging (4) both sides at the top of each preheating and drying room (2).
2. coking coal pre-heating and drying mechanism as described in claim 1, it is characterised in that the stirring pipe (23) is with horizontally disposed
Mode be mounted between two axis drum (22).
3. coking coal pre-heating and drying mechanism as described in claim 1, it is characterised in that the stirring pipe (23) is compared with horizontal plane
Inclined mode is mounted between two axis drums (22).
4. coking coal pre-heating and drying mechanism as described in claim 1, it is characterised in that further include one in the stirring pipe (23)
A center stirring pipe, the center stirring pipe setting is on the axis between two axis drums (22), and the two of center stirring pipe
End is respectively communicated in the central location of two axis drum (22) medial surfaces.
5. the coking coal pre-heating and drying mechanism as described in claim 2,3 or 4, it is characterised in that also set on each stirring pipe (23)
Have teeter column (27), the axis of the teeter column (27) is vertical with the axis of stirring pipe (23) where it.
6. coking coal pre-heating and drying mechanism as described in claim 1, it is characterised in that described under each lower hopper (7)
A blanking tube (8) is installed in portion, and blanking tube (8) is respectively equipped with a gate valve (9), releases mixed coal, is packed into the charcoal of coke oven
Change room.
7. coking coal pre-heating and drying mechanism as described in claim 1, it is characterised in that in the periphery of each lower hopper (7)
Also be surrounded by heat tracing pipe (25) heat preservation, prevent dry mixed coal condense and under the influence of coal.
8. coking coal pre-heating and drying mechanism as described in claim 1, it is characterised in that each stirring air inlet pipe (16)
It is connected to by air inlet threeway (18) with beam barrel (21), mode of communicating is that the nozzle of air inlet threeway (18) is inserted into the beam barrel communicated therewith
(21) in；Each stirring escape pipe (17) is connected to by outlet threeway (19) with beam barrel (21), and mode of communicating is the axis
In the outlet threeway (19) that the external port insertion of cylinder (21) communicates therewith.
9. coking coal pre-heating and drying mechanism as claimed in claim 8, it is characterised in that be additionally provided on the air inlet threeway (18)
Air inlet adjustment valve (20).
10. coking coal pre-heating and drying mechanism as described in claim 1, it is characterised in that each horizontal flue is equipped with air inlet
Hole (14), and be connected to by air inlet (14) with heating air inlet pipe (12), the aperture of air inlet (14) is successively successively decreased from bottom to top,
To adjust every layer of flue air inflow uniform balance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810180775.XA CN108587663B (en) | 2018-03-05 | 2018-03-05 | A kind of coking coal pre-heating and drying mechanism |
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| CN201810180775.XA CN108587663B (en) | 2018-03-05 | 2018-03-05 | A kind of coking coal pre-heating and drying mechanism |
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| CN108587663B true CN108587663B (en) | 2019-11-12 |
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| CN107649491B (en) * | 2017-10-27 | 2021-02-02 | 青岛伊诺威能源化工新技术有限公司 | Vertical multidirectional heating organic solid waste pyrolysis device |
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