CN2479014Y - Controllable self-combustion crushed coal semicoke oven - Google Patents

Abstract

The utility model relates to a controllable self-combustion crushed coal semi coke oven which an oven casing 4, a coal feeding mouth 1 and a coke discharging mouth 16. A baffle 7 in the middle of an oven box 18 divides the oven casing into an upper part and a lower part. The lower part of the oven casing is provided with a water leg 10. The external wall of the oven casing is provided with a circular blower tube 11 and enters the oven box through air supply tubes 13, 14, 15. An oven internal bladder 21 is arranged in the oven box 18. The outside of the oven internal bladder 21 is coated with an internal bladder jacket 23 and the bottom of the oven internal bladder 21 is connected with an oven bottom air supply tube 17 and enters the oven box 18 through air supply branch tubes 22 which are uniformly distributed around. The internal bladder jacket 23 is connected with the water leg 10 by a delivery pipe 19. The inner wall of the upper part is provided with an external aeration gas flue 6. The aeration gas flue 6 is communicated with an oven arch gas flue outlet 26. The middle of the baffle 7 is provided with an inner aeration gas flue 5. Coal leaking pipes 8 are arranged around the baffle 7. The inner aeration gas flue 5 and the external aeration gas flue 6 are provided with outlet flues 24. The utility model has the characteristics of uniform wind distribution and simple structure, and the utility model is used for coking with crushed coal.

Description

Controlled self-burning type broken coal grain semi-coke oven

The utility model relates to the serialization production coking industry stove that semicoke, tar and coal gas are produced in a kind of pyrolysis of coal, particularly relates to a kind of semi-coke oven that can use the broken coal grain.

The pit kiln that uses mainly is the pyrolysis oven of brickwork construction at present, sets up several blast pipes to lead in the furnace shell at furnace bottom, provides air by blast pipe in stove, and the coal combustion middle part is a combustible portion, so that thermophore to be provided, realizes the pyrolysis of coal.This structure design is because the shaft volume is bigger, point of ignition only is distributed in the furnace shell place, therefore exist cloth wind inequality, the shortcoming that burning is uneven, coal seam internal and external temperature difference is bigger, formed serious uneven temperature field from the furnace shell center to the periphery, caused the semicoke produced second-rate, output does not reach design requirements yet.Owing to do not have the burning refrigerating unit at the blast inlet place, local temperature is too high, also occurs the molten slag phenomenon easily, stops up blast inlet, influences ordinary production.And because cloth wind inequality, the temperature inequality has caused refractory materials to be easy to be burnt out, and frequency of maintenance increases virtually.

Chinese patent CN2228080Y.The voltage-controlled self-burning type pit kiln of a kind of air draught is disclosed, this stove all is provided with air inlet mechanism at furnace bottom and furnace side face, and has installed in furnace shell and be used for refrigerative turriform water jacket fire grate, makes long-pending increase of wind distributing face of pit kiln, cloth wind is even, and quality product and output but have significant improvement.But the design of this patent structure is too numerous and diverse, not only actually implement to manufacture the comparison difficulty, and manufacturing cost is also very high, applies on therefore very difficult.

Existing pyrolysis oven, regardless of its structure, all the lumpiness of using coal there is certain requirement, mainly be the lump coal that is suitable for 20-80mm, the following broken coal grain of 20mm then since heap to go in the coke oven coal gap less, the perviousness of flue gas is relatively poor and can't use, and a large amount of broken coal grains has caused the great wasting of resources because of using abandoned.

The purpose of this utility model provide a kind of simple in structure, with low cost, cloth wind is even, coking is effective, particularly can use the controlled self-burning type broken coal grain semi-coke oven of broken coal grain coking.

Controlled self-burning type broken coal grain semi-coke oven of the present utility model includes furnace shell, coal inlet and coke outlet, and the double belljar stoker is installed in the coal inlet, is connected with out focusing mechanism under the coke outlet.Burner hearth middle part at coke oven is provided with dividing plate, coke oven is divided into two portions up and down, the inwall of furnace shell lower part is provided with water jacket, the annular air supply pipe is installed on the outer wall, connect blast pipe respectively and be passed in the burner hearth by blowpipe, valve is installed on the blowpipe, is used to control the switch of blast pipe.Be provided with furnace internal-lining in the burner hearth, furnace internal-lining is surrounded by the inner bag water jacket outward, the furnace internal-lining bottom connects the undergrate blast pipe, be evenly equipped with the air intake arm all around, and pass the inner bag water jacket and communicate with burner hearth, the inner bag water jacket is connected with water jacket by four uniform induction pipes around it, and the top of inner bag water jacket is the row's of being equipped with vapour pipe and reaching outside the stove also.

Upper part inwall of furnace shell is provided with outer ventilation flue, and is communicated with flue outlet on the furnace roof, and ventilation flue the central authorities of dividing plate are provided with in has smoke outlet on the wall of the interior ventilation flue and the flue of ventilating outward, is provided with spillplate above the smoke outlet.Be stamped top cover above the interior ventilation flue.Uniformly around dividing plate be provided with 8 and leak the coal pipes, leak in the burner hearth that the coal pipe extend into the dividing plate below.

The utility model all is provided with ventilation opening at the outside and the center of coke oven, from the multi-faceted air that provides in stove, makes the cloth wind in the stove even, and burning is even, the semicoke constant product quality of producing, and output improves.And the utility model special structure design, make it use the coking of broken coal grain to become possibility, can make full use of the lower broken coal of coal price, produce semicoke, tar and coal gas, greatly reduce production cost, make it have stronger competitive capacity in market competition, market outlook are wide.

Fig. 1 is the structural representation of the utility model semi-coke oven;

Fig. 2 is the A-A view among Fig. 1.

Below in conjunction with accompanying drawing embodiment of the present utility model is further described.

As shown in Figure 1, controlled self-burning type broken coal grain semi-coke oven includes furnace shell 4, coal inlet 1 and coke outlet 16, double belljar stoker 2 is installed in the coal inlet 1, burner hearth 18 middle parts at coke oven are provided with dividing plate 7, coke oven is divided into two portions up and down, it on it drying zone, it is the dried district of sauting down, lower part inwall of furnace shell 4 is provided with water jacket 10, annular air supply pipe 11 is installed on the outer wall, annular air supply pipe 11 is respectively by the valve on blowpipe 12 and the blast tube 12 20 and four blast pipes 13 that are not in same level attitude, 14,15 link to each other, blast pipe 13,14,15 pass water jacket 10 feeds in the burner hearth 18, in burner hearth 18, be provided with furnace internal-lining 21, the furnace internal-lining 21 outer inner bag water jackets 23 that are surrounded by, be connected with undergrate blast pipe 17 in the bottom of furnace internal-lining 21, be evenly equipped with air intake arm 22 all around and pass inner bag water jacket 23 and feed in the burner hearths 18.Inner bag water jacket 23 is connected with water jacket 10 by four uniform induction pipes 19 around it, and the top of inner bag water jacket 23 is equipped with row's vapour pipe 9 and stretches out outside the stove.

Upper part inwall of furnace shell 4 is provided with outer ventilation flue 6, and is communicated with flue outlet 26 on the furnace roof, connects the flue gas retrieving arrangement.Ventilation flue 5 in the central authorities of dividing plate 7 are provided with spreads all over smoke outlet 24 on the wall of interior ventilation flue 5 and outer ventilation flue 6, is equipped with spillplate 25 on it, results in blockage in case broken coal falls into smoke outlet 24.In be stamped top cover 3 on the top of ventilation flue 5, prevention conny drying and directly fall into dried sauting in the district below the interlayer 7 uniformly around dividing plate 7 is provided with 8 and leaks coal pipes 8 and extend in the burner hearth 18 below the dividing plate 7, controls the dried district's coal seam height of sauting effectively.

During work, the broken coal grain and enters into the dried district of sauting by leaking the coal pipe lentamente from coal inlet joins drying zone the coke oven continuously by the double belljar stoker in.The bubbling air in burner hearth from annular air supply pipe and undergrate blast pipe while, by regulating temperature in the valve regulated stove on the blowpipe, control is produced.Water in the water jacket enters in the inner bag water jacket by induction pipe, and water is heated the back from the discharge of row's vapour pipe in the inner bag water jacket, enters after cooling again and forms circulation in the water jacket.The semicoke that produces is slowly discharged from coke outlet, and being discharged to after going out focusing mechanism and quenching becomes the semicoke product outside the stove.Flue gas enters drying zone from flue, and the broken coal grain that heat transferred is flowed through makes it preheating, drying, and is passed into by outer flue gas passage and flue outlet and reclaims tar and coal gas in the flue gas retrieving arrangement respectively.

Claims (4)

1, controlled self-burning type broken coal grain semi-coke oven, include furnace shell (4), coal inlet (1) and coke outlet (16), double belljar stoker (2) is installed in the coal inlet (1), the middle part that it is characterized in that burner hearth (18) is provided with dividing plate (7), coke oven is divided into two portions up and down, the inwall of furnace shell (4) lower part is provided with water jacket (10), annular air supply pipe (11) is installed on the outer wall, annular air supply pipe (11) connects blast pipe (13) respectively by blowpipe (12), (14), (15), and feed in the burner hearth (18), be provided with furnace internal-lining (21) in the burner hearth (18), the outer inner bag water jacket (23) that is surrounded by of furnace internal-lining (21), furnace internal-lining (21) bottom connects undergrate blast pipe (17), be evenly equipped with air intake arm (22) all around and pass inner bag water jacket (23) and communicate with burner hearth (18), inner bag water jacket (23) is connected with water jacket (10) by induction pipe (19), and the top of inner bag water jacket (23) is equipped with row's vapour pipe (9) and stretches out outside the stove; Upper part inwall of furnace shell (4) is provided with outer ventilation flue (6), and be communicated with flue outlet (26) on the furnace roof, ventilation flue (5) in the central authorities of dividing plate (7) are provided with, have smoke outlet (24) on the wall of interior ventilation flue (5) and outer ventilation flue (6), be stamped top cover (3) above the interior ventilation flue (5), the uniform Lou coal pipe (8) that is provided with around the dividing plate (7).

2, controlled self-burning type broken coal grain semi-coke oven according to claim 1, it is characterized in that interior ventilation flue (5) and outside smoke outlet (24) top of ventilation flue (6) be provided with spillplate (25).

3, controlled self-burning type broken coal grain semi-coke oven according to claim 1 is characterized in that being evenly equipped with 8 around dividing plate (7) leaks coal pipe (8).

4, controlled self-burning type broken coal grain semi-coke oven according to claim 1 is characterized in that being evenly equipped with four induction pipes (19) between water jacket (10) and inner bag water jacket (23).

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