CN105627741B - Direct transfer and lead energy saving and environment friendly nitridation kiln - Google Patents
Direct transfer and lead energy saving and environment friendly nitridation kiln Download PDFInfo
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- CN105627741B CN105627741B CN201610160639.5A CN201610160639A CN105627741B CN 105627741 B CN105627741 B CN 105627741B CN 201610160639 A CN201610160639 A CN 201610160639A CN 105627741 B CN105627741 B CN 105627741B
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 239000011449 brick Substances 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 15
- 230000000740 bleeding effect Effects 0.000 claims abstract description 12
- 238000005086 pumping Methods 0.000 claims abstract description 12
- 229920000742 Cotton Polymers 0.000 claims abstract description 11
- 230000001174 ascending effect Effects 0.000 claims abstract description 10
- 238000004321 preservation Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 42
- 238000009413 insulation Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 239000003345 natural gas Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000002912 waste gas Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000002918 waste heat Substances 0.000 abstract description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 9
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 8
- 229910010271 silicon carbide Inorganic materials 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 229910003978 SiClx Inorganic materials 0.000 description 3
- 230000036760 body temperature Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 2
- 239000008246 gaseous mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/04—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
- F27B9/045—Furnaces with controlled atmosphere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
- F27B9/26—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path on or in trucks, sleds, or containers
- F27B9/262—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path on or in trucks, sleds, or containers on or in trucks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
- F27B9/36—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/12—Travelling or movable supports or containers for the charge
- F27D3/123—Furnace cars
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
- F27B9/36—Arrangements of heating devices
- F27B2009/3607—Heaters located above the track of the charge
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Furnace Details (AREA)
Abstract
Direct transfer and lead energy saving and environment friendly nitridation kiln, including main kiln body and secondary kiln body, main kiln body steel plate layer, heat-preservation cotton layer and fire brick layer, main kiln body leading flank and trailing flank are respectively arranged with wicket, four fire-boxes are provided with main kiln body, each fire-box includes air exhaust duct and air intake duct, and the left side and right side of main kiln body internal upper part are respectively equipped with a heater, kiln car is provided between the first refractory brickwork bottom of two sides, main kiln body left side and right side are equipped with nitrogen ascending pipe and vacuum-pumping tube；Secondary kiln body includes outer kiln body and inner kiln tube, and outer gas channel is formed between outer kiln body inwall and inner kiln tube outer wall, is provided with interior air-flow passage in inner kiln tube, outer kiln body right side wall top offers two exhaust outlets, and inner kiln tube right side wall bottom offers bleeding point.Production efficiency height of the present invention, heat conduction efficiency height, good sealing effect, production cost is low, enable to waste gas to rekindle, recycling waste heat re-uses, improves heat utilization efficiency, energy-conserving and environment-protective.
Description
Technical field
The invention belongs to technical field of fire resistant material production, more particularly to one kind to direct transfer and lead energy saving and environment friendly nitridation kiln.
Background technology
Silicon nitride combined silicon carbide material is a kind of new high grade refractory, and quality is hard, and Mohs' hardness is about 9,
Belong to hardened material in nonmetallic materials, be only second to diamond；Normal temperature strength is high, under 1200-1400 DEG C of high temperature, Ji Hubao
The intensity and hardness with normal temperature same time are held, maximum service temperature can reach 1650-1750 DEG C；Thermal coefficient of expansion is small,
Thermal conductivity is high, is not likely to produce thermal stress, has good thermal shock resistance, and service life length, high temperature resists compacted ability strong, corrosion-resistant,
It is resistance to extremely cold very hot, anti-oxidant, the high satisfactory product of dimensional accuracy is easily made.Existing production silicon nitride combined silicon carbide material
The kiln of material uses electrical kiln and shuttle kiln more, and box installed is built on shuttle kiln kiln car and enters product blank, and seals, using block case
Mode, have that wall is thick, heat conduction is slow and the shortcomings of the expense energy, and need after cooling for a long time, people can just enter to take out production
Product, labor intensity is big, opens top cover repeatedly so that the pressure in kiln body reduces, and product quality is not high, therefore existing production nitrogen
The kiln energy consumption of SiClx combined silicon carbide material is universal higher, and capacity usage ratio is low, and thermal losses is serious so that production cost
Height, heat skewness in firing chamber so that product defect rate is high.
The content of the invention
The present invention is in order to solve weak point of the prior art, there is provided a kind of production efficiency is high, heat conduction efficiency is high, close
Envelope effect is good, production cost is low, enable to waste gas to rekindle, recycling waste heat re-uses, improves heat utilization efficiency, energy-saving ring
Energy saving and environment friendly nitridation kiln is led in direct transferring for protecting.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：Direct transfer and lead energy saving and environment friendly nitridation kiln, including
Main kiln body on the ground is set along anterior-posterior horizontal direction and is arranged on below ground and the position parallel with main kiln body length direction
Secondary kiln body in main kiln body side, main kiln body include the steel plate that vertical cross-section is rectangle and the domed structure of section-top
Layer, heat-preservation cotton layer and fire brick layer, steel plate layer, heat-preservation cotton layer and fire brick layer are set gradually from the outside to the core, main kiln body leading flank
Wicket is respectively arranged with trailing flank, the left and right sides of main kiln body front and rear is vertically installed with two sides is parallel to each other
One refractory brickwork, the first refractory brickwork sequentially pass through fire brick layer, heat-preservation cotton layer and steel plate layer upwards, the arch at the top of steel plate layer
Structure is fixedly connected with the junction of the first refractory brickwork by connecting bolt, corresponding at four angles in main kiln body vertically to set
There are four fire-boxes, each fire-box includes vertically disposed air exhaust duct and air intake duct, and air exhaust duct and air intake duct are by being vertically arranged
The second refractory brickwork or so separate, air exhaust duct is close to main kiln body center, and air intake duct is away from main kiln body center, main kiln body internal upper part
Left side and right side be respectively equipped with a heater, the front-end and back-end of each heater respectively with one on front side of main kiln body
Individual fire-box is connected with a fire-box on rear side of main kiln body, and kiln car, two heating dresses are provided between the first refractory brickwork bottom of two sides
Setting in both sides above kiln car, on the left of main kiln body and right side is equipped with some nitrogen ascending pipes and vacuum-pumping tube, each nitrogen injection
Guan Jun is disposed on main kiln body lower sidewall along anterior-posterior horizontal direction, and each vacuum-pumping tube is arranged at intervals along anterior-posterior horizontal direction
In the middle part of main kiln body side wall, all nitrogen ascending pipes and vacuum-pumping tube inside main kiln body with connecting；
Secondary kiln body is rectangle including vertical cross-section and the side of section two and top margin are the outer kiln body of arch and interior kiln
Body, outer kiln body and inner kiln tube are built into by refractory brick, and outer gas channel, interior kiln are formed between outer kiln body inwall and inner kiln tube outer wall
It is provided with interior air-flow passage along the longitudinal direction in vivo, the leading flank of outer kiln body is blocked using refractory brickwork, and the trailing flank of inner kiln tube is adopted
Blocked with refractory brickwork, interior air-flow Channel front end is connected by pipeline with the air exhauster set on the ground, upper in outer kiln body
Portion's inwall is provided with heat exchanger, and inner kiln tube left side wall bottom is spaced apart along anterior-posterior horizontal direction is communicated with outer gas channel and interior
The connected entrance of gas channel, outer kiln body right side wall top offer two exhaust outlets, and two exhaust outlets are along between anterior-posterior horizontal direction
Every arrangement, each exhaust outlet outer end is connected to first airflow line, along airflow on every first airflow line
Direction offers two the first connectors, and four the first connectors are correspondingly connected by pipeline with the air intake duct lower end of four fire-boxes
Logical, inner kiln tube right side wall bottom offers two bleeding points below exhaust outlet, and two bleeding points are along anterior-posterior horizontal direction
Arranged for interval, each bleeding point outer end are connected to second airflow line, along air-flow stream on every second airflow line
Logical direction offers two the second connectors, and four the second connectors correspond to taking out by an exhaust tube and four fire-boxes respectively
Air flue lower end is connected, and a control valve is respectively equipped with two exhaust tubes of air exhauster along airflow direction.
Heater includes three layers of heating tube set along anterior-posterior horizontal direction, and three layers of heating tube are distributed from top to bottom,
Every layer of heating tube forms by the body of at least two coaxial corresponding sealed sets, and a body plugs in adjacent two bodys
In another body, the front-end and back-end of every layer of heating tube, which seal, is connected with burner block, between two body junctions, burns
Being sealed between mouth brick and heating tube junction by high temperature minuteness, burner block is divided into clamping between two halves and upper and lower two halves up and down,
Two stomatas are offered respectively on each burner block, and burner and flame-observing hole are respectively equipped with the burner block at every layer of heating tube both ends,
Burner and flame-observing hole with one end are spaced and interlaced arrangement, is provided with support frame between every layer of heating tube, support frame is away from main kiln
Body center side is fixed and is located on main kiln body inwall, and the equal level in support frame top and bottom offers and heating tube is cylindrical is adapted
Semi-circular recesses, one end away from heating tube is equipped with holding device, the inlet end difference of each burner on each burner block
Natural gas tube and warm-air pipe are connected with, the heat outlet of heat exchanger and the air inlet of warm-air pipe connect.
Holding device on front side of main kiln body includes fixed plate, sleeve pipe and location-plate, and fixed plate is fixedly connected on sleeve pipe
Front end, sleeve pipe is interior to be provided with compression spring, and fixed plate center is threaded with hold-down bolt, and hold-down bolt rear end, which is fixedly connected with, to push away
Plate, push pedal are slidably connected in sleeve pipe, and compression spring front end is fixedly connected on push pedal trailing flank, and location-plate leading flank center is fixed
The locating piece extending into sleeve pipe is connected with, compression spring rear end is enclosed on locating piece and coordinated with location-plate leading flank top pressure,
Location-plate trailing flank is fixedly connected on one end away from heating tube on burner block.
Kiln car includes horizontally disposed upper backup pad and lower supporting plate, is correspondingly provided with four angles of upper backup pad lower surface
Fixed block, each fixed block lower surface are set in low dip after preceding height, and lower supporting plate front and rear is respectively along left and right horizontal
Direction is fixedly connected with axletree, and each axletree left and right ends portion, which is rotatably connected to, heightens wheel, and it is corresponding each to heighten wheel top
Roll and connect with the lower surface of a fixed block, be rotatably connected on axletree positioned at the wheel for each heightening wheel outside, cartwheel roll
Dynamic to be connected on the track set along anterior-posterior horizontal direction on the ground, upper backup pad front center is provided with power drive unit, moves
Force driving device includes shell body, worm gear, worm screw and leading screw, and upper backup pad front end center is provided with bearing block, and leading screw is along front and back
Be connected to horizontally disposed and leading screw rear end thereof in bearing block, worm gear be located in shell body, leading screw pass through worm gear center and with
Worm gear is threadedly coupled, worm screw vertically extend into shell body and with worm gear engaged transmission, shell body leading flank and rear side
Stopper slot is vertically offered on face, through the stopper slot on shell body, lower supporting plate front end is horizontally disposed to be had leading screw
Connecting plate, shell body bottom are fixedly connected on connecting plate upper surface.
Steel bracing plate is provided with per face the first refractory brickwork bottom, steel bracing plate bottom is set on the ground, each steel bracing plate
Upper end opens up fluted along the longitudinal direction, is respectively protruding into from front to back in a groove at left and right sides of upper backup pad, on
The contact surface of supporting plate sidepiece bottom surface and bottom portion of groove is the inclined-plane being parallel to each other, and the bottom of groove is provided with elastic refractory block
Plate, upper backup pad upper surface are equipped with the thermal insulation layer being built into by refractory brick, and upper backup pad forward edge and posterior edges are along a left side
Right direction is provided with one side and is used for the heat-insulated insulated wall of fire door, and first is provided with above upper backup pad on the refractory brickwork of every face first
Projection, thermal insulation layer left and right ends are equipped with second projection, and each second projection lower surface corresponds to one first of homonymy
Projection upper surface gap coordinates.
Above-mentioned technical proposal is used, the invention has the advantages that：
1st, kiln car of the invention when in use, first lays the thermal insulation layer being built into by refractory brick on the upper backup pad of kiln car,
Silicon nitride combined silicon carbide product blank to be processed is placed on thermal insulation layer, kiln car is entered in main kiln body by track, kiln
The upper backup pad both ends of car are inserted into the groove that bracing members are lived, and are rotated by motor driven worm screw, worm gear wheel and along worm screw
Leading screw is driven to be moved down by the stopper slot on shell body, because leading screw is threadedly coupled with worm gear, worm gear wheel causes leading screw
Promote upper backup pad to be moved rearwards, heighten hypotenuse structure rolls forward of the wheel along fixed block, so that upper backup pad falls, on
Supporting plate contacts to form inclined-plane cooperation with the bottom portion of groove of steel bracing plate, so as to form sealing, wicket is then shut, by vavuum pump
By pipeline and the inlet communication of vacuum-pumping tube pipe, start vavuum pump to being vacuumized in main kiln body；When silicon nitride bonded silicon carbon
SiClx product blank is inverted after roasting by motor driven worm screw, and worm gear rotates backward and drives leading screw to lead to along worm screw
The stopper slot crossed on shell body moves up, and because leading screw is threadedly coupled with worm gear, worm gear, which inverts, causes leading screw to be supported on pulling
Plate moves forward, and rolls along the hypotenuse structure of fixed block so as to heighten wheel, so that upper backup pad rises, kiln car is drawn backward
Go out；The present invention is easy to operate, reduces operation difficulty so that production efficiency is improved；
2nd, the present invention during roasting, through burner light and sprayed into heating tube by the gaseous mixture of natural gas and air
Fire so that the temperature around heating tube, which is raised to, reaches predetermined temperature, and nitrogen, kiln car are injected into main kiln body by nitrogen ascending pipe
On silicon nitride combined silicon carbide product blank be between the heater on both sides, so as to start to be calcined, in the process of roasting
In, air exhauster is opened by the high-temp waste gas run out of around heater through air exhaust duct and pipeline, and the is entered from the second connector
Two airflow lines, entered by bleeding point in the outer gas channel of secondary kiln body, acted on through heat exchanger, the high temperature in outer gas channel gives up
Gas enters the first airflow line through exhaust outlet, enters through the first connector and pipeline in air intake duct, and formation high temperature gas flow, which plays, to be added
Heat effect, whole process are a processes constantly circulated, can make full use of waste gas so that used heat, which recirculates, to be utilized, and is carried
High heat utilization efficiency, reduces production cost；Two along airflow direction adjacent to air exhauster can be entered by control valve control
The flow of root exhaust tube interior air-flow so that the air flow rate respectively enterd in four exhaust tubes is identical, and recycling waste heat keeps balance,
Make the temperature in winner's kiln body more stable；
3rd, the present invention is in whole roasting process, and because main kiln body temperature is very high, heating tube can expand, or
After roasting terminates, main kiln body temperature is reduced by height, heating tube can be shunk, now by turning on holding device
Hold-down bolt is so as to promoting location-plate to hold out against burner block and extrude heating tube so that heater is more stable；In main kiln body
The left side and right side on top are provided with heater, and heater is disposed as three layers of heating tube, using said structure
Heat conduction efficiency is high so that Temperature Distribution is more uniform in main kiln body so that the temperature in main kiln body keeps constant.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of main kiln body front portion or rear portion in the present invention；
Fig. 3 is the structural representation of secondary kiln body in the present invention；
Fig. 4 is the lateral cross section sectional view in the middle part of main kiln body in the present invention；
Fig. 5 is the side structure schematic view of main kiln body in the present invention；
Fig. 6 is the overlooking the structure diagram of main kiln body in the present invention；
Fig. 7 is the structural representation of holding device in the present invention；
Fig. 8 is the structural representation of kiln car in the present invention；
Fig. 9 is the side structure schematic view of kiln car in the present invention.
Embodiment
As shown in figs 1-9, of the invention direct transfer leads energy saving and environment friendly nitridation kiln, including is arranged on ground along anterior-posterior horizontal direction
Main kiln body 59 on face 54 and it is arranged on the lower section of ground 54 and parallel with the main length direction of kiln body 59 is located at the main side of kiln body 59
Secondary kiln body 60, main kiln body 59 include vertical cross-section be rectangle and the domed structure of section-top steel plate layer 1, heat-preservation cotton
Layer 2 and fire brick layer 3, steel plate layer 1, heat-preservation cotton layer 2 and fire brick layer 3 set gradually from the outside to the core, the main leading flank of kiln body 59 and
Trailing flank is respectively arranged with wicket, and the left and right sides of the main front and rear of kiln body 59 is vertically installed with two sides is parallel to each other
One refractory brickwork 4, the first refractory brickwork 4 sequentially pass through fire brick layer 3, heat-preservation cotton layer 2 and steel plate layer 1, the top of steel plate layer 1 upwards
Domes be fixedly connected with the first refractory brickwork 4 by connecting bolt 5, correspond at four angles in main kiln body 59 vertical
Provided with four fire-boxes, each fire-box includes vertically disposed air exhaust duct 6 and air intake duct 7, leads between air exhaust duct 6 and air intake duct 7
Cross vertically disposed second refractory brickwork 8 or so to separate, air exhaust duct 6 is close to the main center of kiln body 59, and air intake duct 7 is away from main kiln body 59
Center, the left side and right side of the main internal upper part of kiln body 59 are respectively equipped with a heater 9, and the front end of each heater 9 is with after
End is connected with a fire-box of the main front side of kiln body 59 and a fire-box of the rear side of main kiln body 59 respectively, the first refractory brickwork of two sides 4
Kiln car 10 is provided between bottom, two heaters 9 are located at the top both sides of kiln car 10, and the main left side of kiln body 59 and right side are respectively connected with
Some nitrogen ascending pipes 64 and vacuum-pumping tube 65, each nitrogen ascending pipe 64 are disposed on main kiln body 59 along anterior-posterior horizontal direction
Lower sidewall, each vacuum-pumping tube 65 are disposed in the middle part of the main side wall of kiln body 59 along anterior-posterior horizontal direction, all nitrogen injections
Pipe 64 and vacuum-pumping tube 65 connect with the main inside of kiln body 59；
Secondary kiln body 60 include vertical cross-section be rectangle and the side of section two and top margin be arch the He of outer kiln body 11
Inner kiln tube 12, outer kiln body 11 and inner kiln tube 12 are built into by refractory brick, are formed between the outer inwall of kiln body 11 and inner kiln tube 12 outer wall
Outer gas channel 13, interior air-flow passage 14 is provided with along the longitudinal direction in inner kiln tube 12, the leading flank of outer kiln body 11 uses refractory brick
Wall is blocked, and the trailing flank of inner kiln tube 12 is blocked using refractory brickwork, and the front end of interior air-flow passage 14 is by pipeline and is located at ground 54
On air exhauster be connected, the upper inside wall in outer kiln body 11 is provided with heat exchanger 15, and the left side wall bottom of inner kiln tube 12 is along front and rear
Horizontal direction is spaced apart the connected entrance 16 for being communicated with outer gas channel 13 and interior air-flow passage 14, the outer right side wall top of kiln body 11
Two exhaust outlets 17 are offered, two exhaust outlets 17 connect respectively along anterior-posterior horizontal direction arranged for interval, each outer end of exhaust outlet 17
It is connected to first airflow line 18, two the first connectors is offered along airflow direction on every first airflow line 18
19, four the first connectors 19 are corresponding to be connected by pipeline with the lower end of air intake duct 7 of four fire-boxes, under the right side wall of inner kiln tube 12
Portion offers two bleeding points 20 positioned at the lower section of exhaust outlet 17, and two bleeding points 20 are along anterior-posterior horizontal direction arranged for interval, often
The individual outer end of bleeding point 20 is connected to second airflow line 21, along airflow direction on every second airflow line 21
Offer two the second connectors 22, four the second connectors 22 correspond to taking out by an exhaust tube 61 and four fire-boxes respectively
The lower end of air flue 6 is connected, and a control valve 23 is respectively equipped with two exhaust tubes 61 of air exhauster along airflow direction.
Heater 9 includes three layers of heating tube 24 set along anterior-posterior horizontal direction, and three layers of heating tube 24 are from top to bottom
Distribution, every layer of heating tube 24 forms by the body 62 of at least two coaxial corresponding sealed sets, in adjacent two bodys 62
A piece body 62 is plugged in another body 62, and the front-end and back-end of every layer of heating tube 24, which seal, is connected with burner block 25,
Sealed between two junctions of body 62, between burner block 25 and the junction of heating tube 24 by high temperature cotton 26, burner block 25
It is divided into clamping between two halves and upper and lower two halves up and down, two stomatas 27, every layer of heating tube is offered respectively on each burner block 25
Burner 28 and flame-observing hole 29 are respectively equipped with the burner block 25 at 24 both ends, the burner 28 and flame-observing hole 29 with one end are spaced and handed over
Mistake is arranged, support frame 30 is provided between every layer of heating tube 24, and support frame 30 is fixed away from the main center side of kiln body 59 and is located at main kiln
On the inwall of body 59, the equal level in the top and bottom of support frame 30 offer with the cylindrical semi-circular recesses being adapted of heating tube 24, often
One end away from heating tube 24 is equipped with holding device 31 on individual burner block 25, and the inlet end of each burner 28 is connected to day
Right tracheae 32 and warm-air pipe 33, the heat outlet of heat exchanger 15 are connected with the air inlet of warm-air pipe 33.
Holding device 31 positioned at the main front side of kiln body 59 includes fixed plate 34, sleeve pipe 35 and location-plate 36, and fixed plate 34 is solid
Surely the front end of sleeve pipe 35 is connected to, compression spring 37 is provided with sleeve pipe 35, the center of fixed plate 34 is threaded with hold-down bolt 38, pressure
The tight rear end of bolt 38 is fixedly connected with push pedal 39, and push pedal 39 is slidably connected in sleeve pipe 35, and the front end of compression spring 37 is fixedly connected
In the trailing flank of push pedal 39, the leading flank center of location-plate 36 is fixedly connected with the locating piece 40 extending into sleeve pipe 35, compression spring
37 rear ends are enclosed on locating piece 40 and coordinated with the leading flank top pressure of location-plate 36, and the trailing flank of location-plate 36 is fixedly connected on burner block
One end away from heating tube 24 on 25.
Kiln car 10 includes horizontally disposed upper backup pad 41 and lower supporting plate 42, at four angles of the lower surface of upper backup pad 41
Fixed block 43 is correspondingly provided with, each lower surface of fixed block 43 is set in low dip after preceding height, the front and rear of lower supporting plate 42
Axletree 44 is fixedly connected with along left and right horizontal direction respectively, each left and right ends portion of axletree 44, which is rotatably connected to, heightens wheel 45,
Each heighten the corresponding lower surface rolling with a fixed block 43 in the top of wheel 45 to connect, be rotatably connected on axletree 44 positioned at every
The individual wheel 46 for heightening the outside of wheel 45, wheel 46 are rolled to be connected to along anterior-posterior horizontal direction and are located on the track 47 on ground 54,
The front center of upper backup pad 41 is provided with power drive unit, and power drive unit includes shell body 48, worm gear 49, worm screw 50 and silk
Thick stick 51, the front end center of upper backup pad 41 are provided with bearing block 52, and leading screw 51 is horizontally disposed with along the longitudinal direction and the rear end thereof of leading screw 51
It is connected in bearing block 52, worm gear 49 is located in shell body 48, and leading screw 51 is threadedly coupled through the center of worm gear 49 and with worm gear 49,
Worm screw 50 vertically extend into shell body 48 and with the engaged transmission of worm gear 49, on the leading flank of shell body 48 and trailing flank
Stopper slot is vertically offered, through the stopper slot on shell body 48, the front end of lower supporting plate 42 is horizontally disposed to be had leading screw 51
Connecting plate 53, the bottom of shell body 48 are fixedly connected on the upper surface of connecting plate 53.
Steel bracing plate 55 is provided with per the bottom of the first refractory brickwork of face 4, the bottom of steel bracing plate 55 is located on ground 54, Mei Gegang
The upper end of supporting plate 55 opens up fluted along the longitudinal direction, and the left and right sides of upper backup pad 41 is respectively protruding at one from front to back
In groove, the contact surface of the sidepiece bottom surface of upper backup pad 41 and bottom portion of groove is the inclined-plane being parallel to each other, and the bottom of groove is provided with
Elastic refractory support, the upper surface of upper backup pad 41 are equipped with the thermal insulation layer 56 being built into by refractory brick, the forward edge of upper backup pad 41
It is provided with one side in left-right direction with posterior edges and is used for the heat-insulated insulated wall of fire door, is located on each first refractory brickwork 4 upper
The top of supporting plate 41 is provided with the first projection 57, and the left and right ends of thermal insulation layer 56 are equipped with second projection 58, each second projection
The upper surface gap of first projection 57 that lower surface 58 corresponds to homonymy coordinates.
The present invention the course of work be：The thermal insulation layer being built into by refractory brick is first laid on the upper backup pad 41 of kiln car 10
56, silicon nitride combined silicon carbide product blank to be processed is placed on thermal insulation layer 56, kiln car 10 is entered by track 47 to be led
In kiln body 59, the both ends of upper backup pad 41 of kiln car 10 are inserted into the groove that bracing members are lived, and are rotated by motor driven worm screw 50,
Worm gear 49 rotates and drives leading screw 51 to be moved down by the stopper slot on shell body 48 along worm screw 50, due to leading screw 51 and worm gear
49 threaded connections, worm gear 49, which rotates, causes leading screw 51 to promote upper backup pad 41 to be moved rearwards, so as to heighten wheel 45 along fixed block 43
Hypotenuse structure rolls forward so that upper backup pad 41 falls, the bottom portion of groove of upper backup pad 41 and steel bracing plate 55 connects
Touch and form inclined-plane cooperation, so as to form sealing, then shut wicket, the import by vavuum pump by pipeline and vacuum-pumping tube pipe 65
Connection, start vavuum pump to being vacuumized in main kiln body 59, the gaseous mixture of natural gas and air is lighted through burner 28 and to adding
Flame in heat pipe 24 so that the temperature around heating tube 24, which is raised to, reaches predetermined temperature, by nitrogen ascending pipe 64 to main kiln body
Injection nitrogen in 59, the silicon nitride combined silicon carbide product blank on kiln car 10 is between the heater 9 on both sides, so as to open
Begin roasting, during roasting, open air exhauster by the high-temp waste gas run out of around heater 9 through air exhaust duct 6 and pipeline,
The second airflow line 21 is entered from the second connector 22, is entered by bleeding point 20 in the outer gas channel 13 of secondary kiln body 60, warp
Heat exchanger 15 acts on, and the high-temp waste gas in outer gas channel 13 enters the first airflow line 18 through exhaust outlet 17, through the first connection
Mouth 19 and pipeline enter in air intake duct 7, form high temperature gas flow and play heat effect, silicon nitride bonded silicon carbon is formed after the scheduled time
SiClx product, inverted by motor driven worm screw 50, worm gear 49 rotates backward and drives leading screw 51 to pass through shell body along worm screw 50
Stopper slot on 48 moves up, and because leading screw 51 is threadedly coupled with worm gear 49, worm gear 49, which inverts, causes leading screw 51 to be propped up on pulling
Fagging 41 moves forward, and is rolled backward along the hypotenuse structure of fixed block 43 so as to heighten wheel 45, so that on upper backup pad 41
Rise, kiln car 10 is pulled out；In whole roasting process, because temperature is very high in main kiln body 59, heating tube 24 can expand, or
It is after roasting terminates, temperature is reduced by height in main kiln body 59, and heating tube 24 can be caused to shrink, now held out against by turning
Hold-down bolt 38 on device 31 is so as to promoting location-plate 36 to hold out against burner block 25 and extrude heating tube 24 so that heater 9
It is more stable；Heater 9 is provided with the left side of the main internal upper part of kiln body 59 and right side, and heater is disposed as three
Layer heating tube 24 is high using said structure heat conduction efficiency so that Temperature Distribution is more uniform in main kiln body 59 so that main kiln body
Temperature in 59 keeps constant.
The present invention by examination burn silicon nitride combined silicon carbide product cost it is low, used shaft reduction stove, aluminum smelting technology,
In pushed bat kiln push pedal and superior performance.
The present embodiment is not that the shape to the present invention, material, structure etc. make any formal limitation, every according to this hair
Any simple modification, equivalent change and modification that bright technical spirit is made to above example, belongs to the technology of the present invention side
The protection domain of case.
Claims (3)
- Energy saving and environment friendly nitridation kiln is led 1. direct transferring, it is characterised in that：Including the main kiln along the setting of anterior-posterior horizontal direction on the ground Body and it is arranged on below ground and the secondary kiln body positioned at main kiln body side parallel with main kiln body length direction, main kiln body includes hanging down Straightforward face is steel plate layer, heat-preservation cotton layer and the fire brick layer of rectangle and the domed structure of section-top, steel plate layer, heat-preservation cotton Layer and fire brick layer are set gradually from the outside to the core, and main kiln body leading flank and trailing flank are respectively arranged with wicket, main kiln body it is anterior and The left and right sides at rear portion is vertically installed with the first refractory brickwork that two sides is parallel to each other, and the first refractory brickwork sequentially passes through upwards Fire brick layer, heat-preservation cotton layer and steel plate layer, the domes at the top of steel plate layer pass through with the junction of the first refractory brickwork to be connected Bolt is fixedly connected, and corresponding at four angles in main kiln body to be vertically provided with four fire-boxes, each fire-box includes being vertically arranged Air exhaust duct and air intake duct, air exhaust duct and air intake duct separated by vertically disposed second refractory brickwork or so, and air exhaust duct is close Main kiln body center, air intake duct are respectively equipped with a heater away from main kiln body center, the left side and right side of main kiln body internal upper part, The front-end and back-end of each heater are connected with a fire-box on front side of main kiln body and a fire-box on rear side of main kiln body respectively, Kiln car is provided between the first refractory brickwork bottom of two sides, two heaters are located at both sides above kiln car, main kiln body left side and the right side Side is equipped with some nitrogen ascending pipes and vacuum-pumping tube, and each nitrogen ascending pipe is disposed on main kiln body along anterior-posterior horizontal direction Lower sidewall, each vacuum-pumping tube are disposed in the middle part of main kiln body side wall along anterior-posterior horizontal direction, all nitrogen ascending pipes and Vacuum-pumping tube inside main kiln body with connecting；Secondary kiln body include vertical cross-section be rectangle and the side of section two and top margin be arch outer kiln body and inner kiln tube, outside Kiln body and inner kiln tube are built into by refractory brick, the outer gas channel of formation between outer kiln body inwall and inner kiln tube outer wall, in inner kiln tube Interior air-flow passage is provided with along the longitudinal direction, and the leading flank of outer kiln body is blocked using refractory brickwork, and the trailing flank of inner kiln tube is using resistance to Firebrick wall is blocked, and interior air-flow Channel front end is connected by pipeline with the air exhauster set on the ground, in the top in outer kiln body Wall is provided with heat exchanger, and inner kiln tube left side wall bottom is spaced apart along anterior-posterior horizontal direction and is communicated with outer gas channel and interior air-flow The connected entrance of passage, outer kiln body right side wall top offer two exhaust outlets, and two exhaust outlets are along anterior-posterior horizontal direction interval cloth Put, each exhaust outlet outer end is connected to first airflow line, along airflow direction on every first airflow line Two the first connectors are offered, four the first connectors are correspondingly connected by pipeline with the air intake duct lower end of four fire-boxes, Inner kiln tube right side wall bottom offers two bleeding points below the exhaust outlet, and two bleeding points are along anterior-posterior horizontal direction interval Arrangement, each bleeding point outer end are connected to second airflow line, along airflow side on every second airflow line To two the second connectors are offered, four the second connectors correspond to the air exhaust duct by an exhaust tube and four fire-boxes respectively Lower end is connected, and a control valve is respectively equipped with two exhaust tubes of air exhauster along airflow direction；Heater includes three layers of heating tube set along anterior-posterior horizontal direction, and three layers of heating tube are distributed from top to bottom, every layer Heating tube is formed by the body of at least two coaxial corresponding sealed sets, and a body is plugged in separately in adjacent two bodys In a piece body, the front-end and back-end of every layer of heating tube, which seal, is connected with burner block, between two body junctions, burner block Sealed between heating tube junction by high temperature minuteness, burner block is divided into clamping between two halves and upper and lower two halves up and down, each Two stomatas are offered on burner block respectively, burner and flame-observing hole are respectively equipped with the burner block at every layer of heating tube both ends, it is same The burner and flame-observing hole at end are spaced and interlaced arrangement, is provided with support frame between every layer of heating tube, support frame is away from main kiln body Heart side is fixed and is located on main kiln body inwall, the equal level in support frame top and bottom offer with heating tube it is cylindrical be adapted half Circular groove, one end away from heating tube is equipped with holding device on each burner block, and the inlet end of each burner connects respectively There are natural gas tube and warm-air pipe, the heat outlet of heat exchanger and the air inlet of warm-air pipe connect；Kiln car includes horizontally disposed upper backup pad and lower supporting plate, and fixation is correspondingly provided with four angles of upper backup pad lower surface Block, each fixed block lower surface are set in low dip after preceding height, and lower supporting plate front and rear is respectively along left and right horizontal direction Axletree is fixedly connected with, each axletree left and right ends portion, which is rotatably connected to, heightens wheel, each heightens wheel top and corresponds to and one The lower surface of individual fixed block rolls connection, is rotatably connected on axletree and connects positioned at the wheel for each heightening wheel outside, wheel rolling It is connected on and is set along anterior-posterior horizontal direction on track on the ground, upper backup pad front center is provided with power drive unit, and power drives Dynamic device includes shell body, worm gear, worm screw and leading screw, and upper backup pad front end center is provided with bearing block, leading screw water along the longitudinal direction Put down setting and leading screw rear end thereof is connected in bearing block, worm gear is located in shell body, and leading screw passes through worm gear center and and worm gear Threaded connection, worm screw vertically extend into shell body and with worm gear engaged transmission, on shell body leading flank and trailing flank Stopper slot is vertically offered, for leading screw through the stopper slot on shell body, lower supporting plate front end is horizontally disposed connection Plate, shell body bottom are fixedly connected on connecting plate upper surface.
- 2. according to claim 1 direct transfer leads energy saving and environment friendly nitridation kiln, it is characterised in that：Top on front side of main kiln body Tight device includes fixed plate, sleeve pipe and location-plate, and fixed plate is fixedly connected on sleeve pipe front end, compression spring is provided with sleeve pipe, Gu Fixed board center is threaded with hold-down bolt, and hold-down bolt rear end is fixedly connected with push pedal, and push pedal is slidably connected in sleeve pipe, pressure Contracting spring at front end is fixedly connected on push pedal trailing flank, and location-plate leading flank center is fixedly connected with the positioning extending into sleeve pipe Block, compression spring rear end are enclosed on locating piece and coordinated with location-plate leading flank top pressure, and location-plate trailing flank is fixedly connected on burning One end away from heating tube on mouth brick.
- 3. according to claim 1 direct transfer leads energy saving and environment friendly nitridation kiln, it is characterised in that：Per under the refractory brickwork of face first Portion is provided with steel bracing plate, and steel bracing plate bottom is set on the ground, and each steel bracing plate upper end offers recessed along the longitudinal direction Groove, it is respectively protruding into from front to back in a groove at left and right sides of upper backup pad, upper backup pad sidepiece bottom surface and bottom portion of groove Contact surface is the inclined-plane being parallel to each other, and the bottom of groove is provided with elastic refractory support, and upper backup pad upper surface is equipped with by resistance to It is heat-insulated for fire door that the thermal insulation layer that firebrick is built into, upper backup pad forward edge and posterior edges are provided with one side in left-right direction Insulated wall, the first projection often is provided with above upper backup pad on the refractory brickwork of face first, thermal insulation layer left and right ends are equipped with one Individual second projection, the first projection upper surface gap that each second projection lower surface corresponds to homonymy coordinate.
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| CN201610160639.5A CN105627741B (en) | 2016-03-21 | 2016-03-21 | Direct transfer and lead energy saving and environment friendly nitridation kiln |
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| CN202648384U (en) * | 2012-06-14 | 2013-01-02 | 安徽省六安市佳瑞粉末冶金有限公司 | Surplus and waste heat utilization technology applied to metallurgy tunnel |
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| WO2015000584A3 (en) * | 2013-07-01 | 2015-05-07 | Eisenmann Ag | Method for sintering workpieces to be sintered, and system for this purpose |
| CN204421596U (en) * | 2014-12-08 | 2015-06-24 | 重庆紫竹桦苑建材有限公司 | Tunnel cave sealing system |
| CN205425795U (en) * | 2016-03-21 | 2016-08-03 | 周志彬 | Direct transfer and lead energy -concerving and environment -protective type nitrogenize kiln |
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2016
- 2016-03-21 CN CN201610160639.5A patent/CN105627741B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202648384U (en) * | 2012-06-14 | 2013-01-02 | 安徽省六安市佳瑞粉末冶金有限公司 | Surplus and waste heat utilization technology applied to metallurgy tunnel |
| WO2015000584A3 (en) * | 2013-07-01 | 2015-05-07 | Eisenmann Ag | Method for sintering workpieces to be sintered, and system for this purpose |
| CN103727784A (en) * | 2014-01-17 | 2014-04-16 | 武汉理工大学 | System energy saving method for domestic ceramic oxygen-enriched combustion shuttle kiln |
| CN203908293U (en) * | 2014-04-22 | 2014-10-29 | 长兴盟友耐火材料有限公司 | Energy-saving tunnel kiln |
| CN104315869A (en) * | 2014-10-24 | 2015-01-28 | 重庆福希建材有限公司 | Calcining-kiln waste-heat utilization device for high-void rate shale hollow blocks |
| CN204421596U (en) * | 2014-12-08 | 2015-06-24 | 重庆紫竹桦苑建材有限公司 | Tunnel cave sealing system |
| CN205425795U (en) * | 2016-03-21 | 2016-08-03 | 周志彬 | Direct transfer and lead energy -concerving and environment -protective type nitrogenize kiln |
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| CN105627741A (en) | 2016-06-01 |
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