CN1116382C - Coke briquette carbonizing furnace - Google Patents
Coke briquette carbonizing furnace Download PDFInfo
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- CN1116382C CN1116382C CN00105251A CN00105251A CN1116382C CN 1116382 C CN1116382 C CN 1116382C CN 00105251 A CN00105251 A CN 00105251A CN 00105251 A CN00105251 A CN 00105251A CN 1116382 C CN1116382 C CN 1116382C
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Abstract
The present invention relates to a formed coke carbonizing furnace which belongs to the field of metallurgy and coking. More specifically, the present invention relates to a tunnel type carbonizing furnace which is in a carbonizing pot structure and can continuously prepare formed coke in a dynamic mode. The present invention is mainly composed of a tunnel type furnace body (1), a furnace door (2), an air supply channel (3), a main smoke channel (4), a chimney (5), a smoke channel inserting plate (6), a dry coke quenching chamber (7), a coke discharging pool (9), a furnace end reversing mechanism (11), a coke car walking dynamic mechanism (12), a coal loading device (13), a coke car (15), a coke car walking structure (18), a furnace protecting iron piece (29) and a furnace end air seal facility. The present invention has the advantages of simple structure, advanced design, short coking time, high output of formed coke, low product cost and high quality.
Description
The present invention is a kind of formed coke charring furnace, belongs to metallurgical coking field, particularly is the technical scheme that a kind of CARBONIZATION OF BRIQUETTES is produced the equipment of formed coke.
As everyone knows, the current combustion moulded coal is that country realizes eco-friendly major action, and formed coke production is more great than moulded coal meaning, and performance is unique, purposes is more extensive, yet the charring furnace that does not have an ideal to produce formed coke so far as yet can satisfy the requirement of moulded coal coking.As: Chinese patent application number 88207792.2 described " continuous coking Formed Coke Furnace " are vertical type indirect heating Formed Coke Furnace, the problem that exists be 1. moulded coal in carbonization process by indirect heating, there is product charing degree inequality, formed coke quality instability, output is less.2. moulded coal is in the melting softening process, and free expansion can cause adhesion, distortion even scaffold.3. complex structure is invested bigger.Wearing and tearing were bigger mutually when 4. the vertical retort formed coke was descending.Application number 86106940 described " in pot furnace, producing the method for formed coke and this Jiao's pot furnace " by electrically heated, although design perfect, but exist complex structure, need electrically heated, gas circulation is better, but invest bigger, particularly still there is free expansion in moulded coal carbonization process in upright pot furnace, problems such as the formed coke physical strength is lower, adhesion, distortion, the descending serious wear of formed coke.Chinese patent ZL93222507.1 disclosed " formed coke coke oven ", application number 96122116 disclosed " being used for the pit kiln that hard coal and weakly caking coal are produced formed coke " and ZL96245218.1 disclosed " anthracite fine coal formed coke coke oven " common feature be between, directly mix hot arch top Sloping Hearth coke oven, and based on direct heating.This stove considers that nature discharges of the coke easily, require the furnace bottom pitch angle enough big, wanting burner hearth lengthening inevitable requirement body of heater like this increases, therefore the general furnace superintendent of such stove is shorter, only for 2-3 rice and because based on direct heating, the fire box temperature gradient is very little, furnace temperature is higher, regulate difficulty, cause following defective, 1. moulded coal promptly enters the high-temperature zone without preheating and drying, make moisture content in the moulded coal, fugitive constituent is emitted suddenly, under the lower situation of briquette strength, can not bear inner bulging force, form a lot of crackles, in addition, higher at the semicoke contraction process owing to furnace temperature, cause string stress bigger, form a lot of crackles equally, influenced the physical strength of formed coke.2. direct heating unavoidably will be burnt part Jiao in the air importing stove, causes the moulded coal surface oxidation bigger.3. burner hearth is short causes moulded coal output less.4. moulded coal is at the melting softening stress-displacement stage, moulded coal free expansion, inner bulging force is reduced relatively, slowed down flowing of plastic mass, cause viscosifying power to reduce, want to keep certain cohesive force, guarantee the formed coke quality, must polygamy add highly caking coal (as rich coal) or add binding agent (as tar) result and cause the increase of formed coke cost.5. moulded coal is heaped in stove, can form certain adhesion or distortion in carbonization process.
A kind of formed coke charring furnace purpose of the present invention is, solves the problem that above-mentioned various Formed Coke Furnace exists, and overcomes the defective of existence, thus provide a kind of charing alms bowl structure, tunnel type, dynamically, the technical scheme of continuously carbonizing stove.
The description of drawings of a kind of formed coke charring furnace of the present invention:
Fig. 1 is a formed coke charring furnace floor map.
Fig. 2 is a formed coke charring furnace longitudinal profile synoptic diagram.
Fig. 3 is a formed coke charring furnace horizontal section synoptic diagram.
Label among the figure is: 1, body of heater 2, fire door 3, wind channel 4, flue collector 5, chimney 6, divide chimney back 7, coke quencher 8, blower fan 9, unload burnt pond 10, scraper plate machine 11, burner reversing system 12, actuating unit 13 is walked by burnt garage, moulded coal filling device 14, track 15, burnt car 16, charing alms bowl 17, unload focusing mechanism 18, travel mechanism 19, air feed adjustable plate 20, seal recessed edge 21, secondary air hole 22, refractory brick 23, common brick 24, flue gas spray orifice 25, cigarette gas entering opening 26, calorifier 27, flue gas portals 28, empty gas entering opening 29, furnace retaining ironware 30, air channel 31, flue 32, charing alms bowl frame 33, charing alms bowl anchor 34, anchor support 35, rack shaft 36, wing plate 37, gear 38, handle
Introduce the technical characterictic of a kind of formed-coke carbonization furnace of the present invention below in conjunction with accompanying drawing:
A kind of formed-coke carbonization furnace of the present invention is a kind of charing alms bowl structure, tunnel type, dynamic Produce continuously the retort of formed coke, mainly by tunnel type furnace body 1, fire door 2, wind channel 3, Flue collector 4, chimney 5, flue plugboard 6, CDQ chamber 7, unload burnt pond 9, burner changes To mechanism 11, walking power mechanism of burnt garage 12, coaling gear 13, burnt car 15, burnt garage Walk mechanism 18, furnace retaining ironware 29 and burner sealing gland facility and form described tunnel type furnace body Be arched tunnel, the stove internal layer is firebrick structure, and leaves dilatation joint, and skin is that common brick 23 reaches Heat-insulation layer, the two ends, tunnel are provided with fire door 2, and body of heater side wall one side is built once wind hole 28, air channel 30 and secondary air hole 21, opposite side is provided with flue gas and portals 27 and flue 31; The outer side of stove is established Wind channel 3 and air feed adjustable plate 19 are arranged, and opposite side is provided with flue collector 4 and flue plugboard 6 With chimney 5, interior wall is provided with flue gas spray orifice 24 at the burner two ends, and exterior wall is provided with flue gas and advances Both walls is provided with recessed edge 20 and is meshed recessed edge with burnt car alms bowl frame wing plate 36 in the hole 25, stove In the grains of sand are housed; Adopt direct cold wind cooling quenching, the gas after the heat exchange is as combustion air The coke quencher 7 that enters in the stove is a closed chamber; Can hold entry formed coke is further cooled off, with Impulse force when the time is cushioned the formed coke whereabouts reduces the burnt pond 9 of unloading of broken coke yield, is provided with out at the bottom of the pond Burnt scrapper conveyor; Burner changement 5 employing gardens dish or steel-rail structure; Burnt garage walking power machine Structure 12 is bidirectional hydraulic linkage or other mechanical transmission mechanism; Coaling gear 13 is manual Or automatics; Burnt car 15 by the little burnt car of series connection, walking mechanism 18, charing alms bowl 16, Charing alms bowl frame 32, rotation are unloaded focusing mechanism 17 and are formed; Burner sealing gland facility 9 by blower fan 26, Flue gas spray orifice 24, flue gas inlet hole 25 form.
Aforesaid charing alms bowl 16 is a hollow, is shaped as garden cylindricality or square or Polygons, and material can be high temperature steel, cast iron or refractory materials, its bottom sealing, opened upper end; Charing alms bowl frame 32 is made of two portions, and each part is made up of charing alms bowl anchor 33, anchor support 34, rack shaft 35, connects with bolt or electric welding between the each several part; Charing alms bowl anchor 33 is connected with wing plate 36 and 20 engagements of stove inside wall fovea superior edge on one side, and charing alms bowl anchor 33 usefulness high temperature steel or cast iron are made; Unloading focusing mechanism 17 forms by being individually fixed in a pair of intermeshed gear 37 on the support shaft and being fixed on a handle 38 and a gear stopping device on the axle.
The feature and the advantage of a kind of formed coke charring furnace of the present invention are as follows:
1. simple in structure, full stove is an arched tunnel formula stove, the stove two ends are provided with the lift fire door, the body of heater internal layer is built by laying bricks or stones by refractory brick, skin is built by laying bricks or stones with common brick, fills with lagging material between ectonexine, leaves dilatation joint on the interior wall, side at interior wall is provided with once, secondary intake opening and air inlet duct, and opposite side is provided with exhanst gas outlet and flue.The stove inner bottom part is covered with rail, is used for burnt garage and walks, and is provided with the flue gas spray orifice at burner two ends chimney arch and furnace wall both sides, starts the flue gas blower fan and make flue gas spray the formation air curtain from spray orifice when oven door opening, and avoiding air to suck in the stove influences furnace temperature.
2. whole stove is divided into the preheating and drying district, the district that is rapidly heated (melting softened zone), flat-temperature zone (semicoke shrinking zone), cooling area, coke quencher and unload burnt section.
3. dynamic continuously carbonizing is opened fire door at regular intervals and push a burnt car in stove, makes the different humidity province of burnt car process in the stove.Burnt car translational speed and the medium-sized coal tar speed of charing alms bowl are complementary.
4. temperature regulation is convenient
Can be by regulating the air feed plate and dividing chimney back to control the temperature of different sections in the stove, make it more meet weakly caking coal coking characteristics, make coal charge reach melting as early as possible as being rapidly heated in earlier stage in charing softening, form a large amount of plastic masss, the inner bulging force of charing alms bowl is increased, active ingredient is given full play to cohesive action, do one's best inert component is bondd, then temperature is steady in the semicoke systole, stress when reducing the semicoke contraction, the formed coke crackle is reduced, improve the physical strength and the lumpiness of formed coke.
5. simple and special charing alms bowl
Charing alms bowl shape can be designed to different shapes according to customer requirements, generally is garden column (as the casting formed coke of φ * h=100 * 110mm), and material can be high temperature steel, cast iron, refractory materials etc.Charing alms bowl interior dimensions and moulded coal size are complementary, the alms bowl underseal is dead, the alms bowl top adds lid or adds a cover the heat-resisting material that adds, in carbonization process, can play the effect of secluding air destructive distillation coal, such design can be heated the charing alms bowl on four sides, and rate of heating is fast, and melting is softened, the colloid amount is many, good fluidity, moulded coal can not free expansions in alms bowl, and inner bulging force strengthens, coke quality is good, the caking coal consumption is few, and product cost is low, is that semicoke systole formed coke shrinks evenly in the coking later stage, make formed coke and alms bowl body form certain interval, discharge of the coke easily, along with the rising of temperature, the volatiles that moulded coal discharges is emitted the air mixed with the process preheating from charing alms bowl top cover slit (or eyelet) or heat-resistant filler in carbonization process, fully burning, indirect thermal source is provided, thereby makes CARBONIZATION OF BRIQUETTES in the alms bowl body, owing to be in malleation all the time in the carbonization process alms bowl, air can not enter in the alms bowl, thereby can not cause and burn phenomenon. and thoroughly eliminated direct heating and " changed " problem burnt.Do not exist yet and form problems such as adhesion or distortion between the formed coke.
6. burnt car is reasonable in design
Burnt car design is except that reaching walking function, and Jiao Che and furnace wall are designed to the profile of tooth sealed structure, have avoided travel mechanism to bear high temperature for a long time; And designed and unloaded focusing mechanism flexibly, utilize the rotating axle of two of a pair of gear drivens, charing alms bowl frame is rotated to an angle to the two sides make the downward impouring Jiao Chi of formed coke, easy to operate, discharge of the coke easily.The charing alms bowl is arranged in parallel, and is fixed on the alms bowl frame, can be one or more layers layout.
7. Formed Coke Furnace thermo-efficiency height, once when baker reaches 800 ℃ of left and right sides, can remove external heat source, and utilize the burning of formed coke destructive distillation gas to keep furnace temperature, and can require to regulate furnace temperature according to quality product.
8. design the dry quenching(of coke) chamber, utilized the freezing air burnt car that directly blows on.Air after the preheating imports in the stove again, has improved thermo-efficiency.
9. Cryogenic air is imported from burnt car bottom and cooled off burnt car, prolonged work-ing life.
10. the power that has adopted the bidirectional hydraulic linkage to walk as burnt garage, flexible.
11. designed burnt car reversing mechanism at burner stove tail, the filling of moulded coal can be adopted automatic fillling machine tool or artificial filling.
12. formed coke quality, performance index can be by coal blendings, regulate forming pressure, coal charge grain size distribution, moisture, and furnace temperature height, temperature rise rate, burnt garage are walked the requirement that means such as speed satisfy different user.
13. do not influence furnace temperature for freezing air is sucked in the stove, be provided with the flue gas spray orifice at burner, when door opened, utilize the flue gas of ejection to form air curtain isolating exterior air.
14., be provided with the furnace retaining ironware in order to prolong furnace life.
15. this furnace coking time is short, formed coke output is big, and product cost is low, and the quality height is built stove and invested little.
The formed coke production technique is as follows: multiple coal (as rich coal and hard coal) or single coal (as lean coal) of planting are pulverized through washing, make coal charge＞90% of granularity＜3mm, and make grain size distribution reach optimization, adding certain water gaging reaches about 8 ~ 12% coal charge moisture content, after the shaper moulding, transport to the moulded coal filling device through travelling belt, pack in the burnt car in each charing alms bowl, the fire resistant infilling capping is added a cover or used to the charing alms bowl, before being pushed into fire door, open fire door, then adopt hydraulic stem that burnt car is pushed in the stove, close fire door, along with pushing of other burnt car, burnt car is forged by preheating and drying in succession, the section of being rapidly heated (the softening section of melting), constant temperature zone (semicoke contraction section), cooling section, open fire door, enter coke quencher then, behind the freezing air dry quenching(of coke), be pushed into and unload Jiao Chi, start and unload focusing mechanism, the upset of charing alms bowl frame is drawn off Jiao, utilize the scraper plate machine that Jiao is scraped the pond of the discharging of the coke then, be transported to Jiao Chang, the volatile matter that whole carbonization process utilizes moulded coal in the charing alms bowl to be heated to emit and preheated air mix the heat indirect heating charing alms bowl that afterfire produces fully and come secluding air destructive distillation moulded coal to make it through preheating and drying, melting is softening, carbonization at low temperature, processes such as semicoke contraction become and have certain physical strength, the formed coke of void content and lumpiness.By the air feed adjustable plate of regulating each section of body of heater and the temperature of dividing conveniently adjusted each section of flue plugboard.
Specific embodiment:
The charring furnace of 20,000 tons of formed cokes of a kind of annual output, 60 meters of its furnace superintendents, 1.5 meters of sagitta, stove is wide 1.2 meters, and the stove inside wall adopts 230 mm thick refractory fireclay blocks, and the stove exterior wall adopts 240 millimeters common bricks to build by laying bricks or stones, between refractory brick and common brick dilatation joint is arranged, be filled with thermal insulating filling in the seam, as grain slag.Furnace wall has every 2 meters blocks that air supply hole, air channel, flue gas portal, flue, and the wind hole dimension is 110 * 230 millimeters, and smoke hole is of a size of 230 * 340 millimeters, and wind hole and flue gas portal to stagger mutually and build by laying bricks or stones; Furnace wall is every 2 meters longitudinal dilatation seams that leave 1 centimetre.Furnace roof is a sprung arch, is built into refractory fireclay block, and long to leaving dilatation joint equally, stove end dome and side wall are provided with 65 * 65 millimeters of sealing gland spray orifice sizes.Furnace bottom is laid track.
Fire door adopts the motor hoist lifting, and the charing alms bowl adopts high alumina refractory to make, and charing alms bowl internal diameter is 110 millimeters, and height is 120 millimeters, every charing alms bowl brick body lower seal, and be provided at an outer portion with and collude groove, be connected with the alms bowl frame.
Coke quencher's structure is a seal cavity, and freezing air evenly is blown into from the stove upside, and warm air enters wind channel from the bottom, imports in the stove, as combustion air.
The burner reversing system adopts the rail structure, and particularly, burnt car is pushed to the commutation dolly on the commutation rail, and cart vertical moves to and stove inner orbit positions aligning then, utilizes the bidirectional hydraulic bar that burnt car is promoted forward, reaches the effect of commutation.
By the temperature of regulating air feed plate open degree and dividing the flue plugboard open degree to regulate each section in the stove, make burnt car in succession by preheating and drying section (100～400 ℃), rapid heating (melting is softening) section (900～1050 ℃), semicoke contraction section (800～900 ℃), the section of cooling (300～600 ℃).The quality index of casting formed coke: a. lumpiness＞80mm accounts for 100% wherein＞110mm account for 95%b. ash content (Ad)≤12%c. fugitive constituent (Vdaf)＜1.5%d. sulphur content (St, d)＜0.8%e. apparent porosity (Ps)＜35%f. barrate strength (M40)＞80%g. dropping strength (SI
4 50)＞84%h. moisture content＜5.0%
Claims (2)
1, a kind of formed coke charring furnace, it is a kind of formed coke charring furnace of continuous coking moulded coal, it is characterized in that, it is a kind of dynamic type charring furnace of charing alms bowl structure of horizontal type structure, mainly by tunnel type furnace body (1), fire door (2), wind channel (3), flue collector (4), chimney (5), flue plugboard (6), dry quenching(of coke) chamber (7), unload Jiao Chi (9), burner reversing mechanism (11), actuating unit (12) is walked by burnt garage, coaling gear (13), burnt car (15), mechanism (18) is walked by burnt garage, furnace retaining ironware (29) and burner sealing gland facility are formed, described tunnel type furnace body (1) is an arched tunnel, the stove internal layer is a firebrick structure, and leave dilatation joint, skin is common brick (23) and thermal insulation layer, the two ends, tunnel are provided with fire door (2), body of heater side wall one side is built once wind hole (28), air channel (30) and secondary air hole (21), opposite side are provided with that flue gas portals (27) and flue (31); The outer side of stove is provided with wind channel (3) and air feed adjustable plate (19), opposite side is provided with flue collector (4) and flue plugboard (6) and chimney (5), on the interior wall of burner two ends, be provided with flue gas spray orifice (24), exterior wall is provided with cigarette gas entering opening (25), and the interior both walls of stove is provided with recessed edge (20) and is meshed with burnt car alms bowl frame wing plate (36); Adopting the gas after the direct cold wind cooling quenching heat exchange is a sealing chamber as the coke quencher (7) that combustion air enters in the stove; Can hold entry formed coke is further cooled off, the impulse force when cushioning formed coke simultaneously and falling, that reduces broken coke yield unloads Jiao Chi (9), is provided with the scraper plate machine that discharges of the coke at the bottom of the pond; Burner reversing mechanism (5) employing garden dish or rail structure; It is bidirectional hydraulic linkage or other mechanical transmission mechanism that actuating unit (12) is walked by burnt garage; Coaling gear (13) is manual or automatic gear; Burnt car (15) is unloaded focusing mechanism (17) and is formed by placed in-line little burnt car, travel mechanism (18), charing alms bowl (16), charing alms bowl frame (32), rotation; Burner sealing gland facility (9) is made up of blower fan (26), flue gas spray orifice (24), cigarette gas entering opening (25).
2, according to the described a kind of formed coke charring furnace of claim 1, it is characterized in that described charing alms bowl (16) for hollow, is shaped as garden cylindricality or square or Polygons, material can be high temperature steel, cast iron or refractory materials, its bottom sealing, opened upper end; Charing alms bowl frame (32) is made of two portions, and each part is made up of charing alms bowl anchor (33), anchor support (34) rack shaft (35), is connected with electric welding with bolt between the each several part; Charing alms bowl anchor (33) is connected with wing plate (36) and stove inside wall fovea superior edge (20) engagement on one side, and charing alms bowl anchor (33) is made with high temperature steel or cast iron; Unloading focusing mechanism (17) forms by being individually fixed in a pair of intermeshed gear (37) on the support shaft and being fixed on a handle (38) and a gear stopping device on the axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00105251A CN1116382C (en) | 2000-04-23 | 2000-04-23 | Coke briquette carbonizing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00105251A CN1116382C (en) | 2000-04-23 | 2000-04-23 | Coke briquette carbonizing furnace |
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| Publication Number | Publication Date |
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| CN1267703A CN1267703A (en) | 2000-09-27 |
| CN1116382C true CN1116382C (en) | 2003-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN00105251A Expired - Fee Related CN1116382C (en) | 2000-04-23 | 2000-04-23 | Coke briquette carbonizing furnace |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100422634C (en) * | 2001-07-17 | 2008-10-01 | 鲁效启 | Kiln type boiler for heating coke |
| CN101565626B (en) * | 2009-04-30 | 2012-12-26 | 上海得旺力实业有限公司 | Industrial coke carbonization furnace used for metallurgy |
| CN101880535B (en) * | 2010-07-08 | 2014-01-01 | 沈阳北冶冶金科技有限公司 | Lignite dry distillation device and method |
| CN103468273B (en) * | 2013-09-28 | 2014-12-10 | 太原理工大学 | Large-scale tamping coal heat recovery retort |
| CN113717741B (en) * | 2021-09-25 | 2022-05-13 | 太原理工大学 | Hierarchical pore coke and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2032194U (en) * | 1988-06-28 | 1989-02-08 | 山西省晋城市煤炭研究所 | Continuous coking type coke furnace |
| CN2181664Y (en) * | 1993-08-30 | 1994-11-02 | 山西矿业学院 | Shaped coke coking furnace |
| CN1153809A (en) * | 1996-11-08 | 1997-07-09 | 翼城县煤炭工业管理局 | Coke briquette oven with anthracite and low-viscosity coal as material |
-
2000
- 2000-04-23 CN CN00105251A patent/CN1116382C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2032194U (en) * | 1988-06-28 | 1989-02-08 | 山西省晋城市煤炭研究所 | Continuous coking type coke furnace |
| CN2181664Y (en) * | 1993-08-30 | 1994-11-02 | 山西矿业学院 | Shaped coke coking furnace |
| CN1153809A (en) * | 1996-11-08 | 1997-07-09 | 翼城县煤炭工业管理局 | Coke briquette oven with anthracite and low-viscosity coal as material |
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| CN1267703A (en) | 2000-09-27 |
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