CN2479358Y

CN2479358Y - Controllable self-firing coal semicoke oven

Info

Publication number: CN2479358Y
Application number: CN 01221249
Authority: CN
Inventors: 郑宏斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-04-18
Filing date: 2001-04-18
Publication date: 2002-02-27
Anticipated expiration: 2011-04-18

Abstract

The utility model relates to a controllable self-firing coal semi coke oven which comprises an oven casing 3, a coal feeding mouth 1 and a coke discharging mouth 14. The lower half part of the oven casing is provided with a water leg 17. The external wall of the oven casing is provided with a circular blower tube 9 and enters the oven box through a blowpipe 10 and air-supply tubes 11, 12, 13. An oven internal bladder 6 is arranged in the oven box 19. The outside of the oven internal bladder 6 is coated with an internal bladder jacket 5 and the bottom of the oven internal bladder 6 is connected with an oven bottom air-supply tube 15 and enters the oven box 19 through air-supply branch tubes 7 which are uniformly distributed around. The internal bladder jacket 5 is connected with the water leg 17 by a delivery pipe 8. The upper part of the internal bladder jacket 5 is provided with a steam discharge pipe 4. A fume outlet 21 is arranged on the top of the oven and is connected with a flue gas recovery device. The utility model has the characteristics of uniform wind distribution, simple structure, etc.

Description

Controlled self-burning type coal cinder 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.

The coke oven 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 constituent, so that thermophore to be provided, realizes the pyrolysis of coal.This structural design is because the shaft volume is bigger, burning point 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 designing requirement yet.Owing to do not have the burning cooling device at the air inlet place, local temperature is too high, also occurs the molten slag phenomenon easily, stops up air inlet, influences ordinary production.And because cloth wind inequality, the temperature inequality has caused refractory material to be easy to be burnt out, and maintenance frequency increases virtually.

Chinese patent CN2228080Y discloses the voltage-controlled self-burning type coke oven of a kind of air draught, this stove all is provided with air inlet mechanism at furnace bottom and furnace side face, and the turriform water jacket fire grate that is used to cool off has been installed in furnace shell, make the wind distributing face of coke oven amass increase, cloth wind is even, and product quality and output all 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.

The purpose of this utility model provides a kind of simple in structure, with low cost and cloth wind is even, the controlled self-burning type coal cinder semi-coke oven that coking is effective.

Controlled self-burning type coal cinder semi-coke oven of the present utility model includes furnace shell, coal feed point and coke outlet, and the double belljar coal feeder is installed in the coal feed point, is connected with out focusing mechanism under the coke outlet.On the inwall of furnace shell, the latter half is provided with water leg, and the first half is built refractory brick.The annular air supply pipe is installed on the outer wall of furnace shell, connects blast pipe respectively and be passed in the burner hearth, valve is installed on the blowpipe, be used to control the switch of blast pipe by blowpipe.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 leg by four uniform flow pipes around it, and the top of inner bag water jacket is the row's of being equipped with steam pipe and reaching outside the stove also.

Flue outlet is arranged on the coke oven furnace roof.Thermocouple also is installed on the furnace shell is used to control temperature in the stove.

The utility model all is provided with ventilating 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 structural design is simple, rationally, production and processing is convenient, easily, production cost is low, market prospects are wide.

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

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

As shown in Figure 1, controlled self-burning type coal cinder semi-coke oven includes furnace shell 3, coal feed point 1 and coke outlet 14, and double belljar coal feeder 2 is installed in the coal feed point 1.Furnace shell 3 is divided into two parts up and down, on furnace shell 3 inwalls of the first half, build and refractory brick 20 is arranged to prevent to burn out furnace shell 3, the furnace shell 3 of the latter half is provided with a water leg 17, water leg 17 outsides are equipped with annular air supply pipe 9 on furnace shell 3 outer walls, annular air supply pipe 9 links to each other with four

blast pipes

11,12,13 that are not in same horizontal level with valve 16 on the blowpipe 10 by blowpipe 10 respectively, and

blast pipe

11,12,13 passes water leg 17 and feeds in the burner hearths 19.In burner hearth 19, be provided with furnace internal-lining 6, be surrounded by inner bag water jacket 5 outside the furnace internal-lining 6, be connected with undergrate blast pipe 15, be evenly equipped with air intake arm 7 all around, and pass in the inner bag water jacket 5 feeding burner hearths 19 in the bottom of furnace internal-lining 6.Inner bag water jacket 5 is connected with water leg 17 by four uniform flow pipes 8 around it, and the top of inner bag water jacket 5 is equipped with row's steam pipe 4 and stretches out outside the stove.

Thermocouple 18 also is installed on furnace shell 3 is used to control temperature in the stove.

Semi-coke oven top furnace roof is provided with flue outlet 21, connects the flue gas retracting device.

During work, coal cinder joins the coke oven from coal feed point by the double belljar coal feeder continuously, 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 leg enters in the inner bag water jacket by flow pipe, and water is heated the back from the discharge of row's steam pipe in the inner bag water jacket, enters after cooling again and forms circulation in the water leg.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 is discharged after the flue gas retracting device reclaims tar and coal gas respectively from flue outlet.

Claims

1, controlled self-burning type coal cinder semi-coke oven, include furnace shell (3), coal feed point (1) and coke outlet (14), double belljar coal feeder (2) is installed in the coal feed point (1), the Lower Half bulkhead that it is characterized in that furnace shell (3) is provided with water leg (17), the first half inwall is built refractory brick (20), annular air supply pipe (19) is installed on the outer wall of furnace shell (3), annular air supply pipe (9) connects blast pipe (11) respectively by blowpipe (10), (12), (13) and feed in the burner hearth (19), be provided with furnace internal-lining (6) in the burner hearth (19), the outer inner bag water jacket (5) that is surrounded by of furnace internal-lining (6), furnace internal-lining (6) bottom connects undergrate blast pipe (15), be evenly equipped with air intake arm (7) all around and pass inner bag water jacket (5) and communicate with burner hearth (19), inner bag water jacket (5) is connected with water leg (17) by flow pipe (8), the top of inner bag water jacket (5) is equipped with row's steam pipe (4) and stretches out outside the stove, and furnace roof is provided with flue outlet (21).

2, controlled self-burning type coal cinder semi-coke oven according to claim 1 is characterized in that being evenly equipped with four flow pipes (8) between water leg (17) and inner bag water jacket (5).

3, controlled self-burning type coal cinder semi-coke oven according to claim 1 is characterized in that annular air supply pipe (9) communicates with blast pipe (11), (12), (13) by the valve (16) on the blowpipe (10) respectively.

4, controlled self-burning type coal cinder semi-coke oven according to claim 1 is characterized in that being equipped with thermocouple (18) on furnace shell (3).