CN2290005Y

CN2290005Y - Vertical pearlite expansion furnace

Info

Publication number: CN2290005Y
Application number: CN 97209213
Authority: CN
Inventors: 姜克志
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-01-03
Filing date: 1997-01-03
Publication date: 1998-09-02
Anticipated expiration: 2007-01-03

Abstract

The utility model discloses a vertical perlite expansion furnace without freezing the furnace basically. A cooling furnace body is a box body full of fluid medium made of steels; the box body forms a double circular ring post shape; an upper and a lower ports between an inner and an outer ring walls are closed; the space between the walls is full of water; one side of the outer wall is provided with a water inlet and a water outlet; the inner wall surrounds the flame gas and a material space. The cold water is filled in and the hot water is discharged continuously, and as a result, the temperature of the inner wall surface of the cooling furnace body is lower than 300 DEG C. The utility model reduces the area and the thickness when freezing the furnace, improves the quality and the yield of the products, and saves the energy consumption and capital for repairing.

Description

Vertical furnace for expanding perlite

The utility model relates to the kiln of handling finely-divided material in dispersio, particularly perlite ore is carried out roasting, makes it become the vertical expansion furnace of expanded perlite.

The type of furnace of the present furnace for expanding perlite of China mainly contains vertical heater, swinging stove and three kinds in the stove of reposing.Which kind of type of furnace no matter, one of its common difficulty is a freezing of a furnace.To be exactly the perlite that enters zone of swelling stick on phenomenon on the furnace wall owing to self or stove inwall are the melting state with so-called freezing of a furnace.The freezing of a furnace layer is more and more thicker in process of production, in case when the flow velocity that partial occlusion causes flame gas and material is quite slow, must stops production and remove the freezing of a furnace layer.The freezing of a furnace position of upright stove at regular intervals must freezing of a furnace clinker of cleaning mostly at feed opening up and down in each 40 cm range.Generally be to produce about 10 hours, with removing in 1 hour once, could continue to produce.Even like this, produced 2-3 month, just need the opposition stove to carry out large repairs at least 6 months (one class of every day), change inwall refractory brick.Overhaul needs about 10,000 yuan of fund, about 6 days time.The basic reason of freezing of a furnace is that inboard wall of furnace body all is that refractory material is built by laying bricks or stones and formed.

The purpose of this utility model is to provide a kind of vertical furnace for expanding perlite of basic non-clotted slag.

For achieving the above object, the vertical furnace for expanding perlite of the utility model, space by body of heater and encirclement thereof is formed, and order is burner hearth, combustion chamber, zone of swelling and salband from the bottom to top, it is characterized in that the salband body of heater is the casing that is full of fluid media (medium) with the steel manufacturing.

Above-mentioned salband casing be shaped as two circle ring columns, the upper and lower opening between the inside and outside ring wall of this casing is closed, and is full of water between wall, the outer wall side has water inlet and delivery port, inwall surrounds flame gas and material space.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the longitudinal sectional drawing of the vertical furnace for expanding perlite of the utility model.

Fig. 1 has provided a kind of structure of the vertical furnace for expanding perlite of the utility model (hereinafter to be referred as upright stove).This stove is provided with burner hearth 1, and this hearth wall is provided with fire door 7, and this fire door is used for combustion-supporting ventilation when being fuel with oil, when being fuel with the coal as coal filling hole.Also be provided with three oil gun holes 8 on the hearth wall, can block during for fuel with the coal.

The burner hearth top is combustion chamber 2, and flame and air-flow are pressed arrow 10 directions and risen.

The top, combustion chamber is a zone of swelling 3, six tremie pipes 9 are installed on its body of heater, perlite ore tilts to fall into the zone of swelling space from the mouth of pipe, moment, expanded by heating was expanded perlite 20, expanded perlite is under flame gas promotes and under the suction function of the cyclone separator of not drawing among the figure, through salband 4, the space of bend pipe 5 and horizontal tube 6 enters cyclone separator by arrow 11 directions.

The zone of swelling top is a salband 4, the salband body of heater of the upright stove of the utility model is the casing that is full of fluid media (medium) with the steel manufacturing, this casing be shaped as two circle ring columns, upper and lower opening between the inside and outside ring wall is closed, be full of water 21 between wall, the outer wall side has water inlet and delivery port, band presses cold water to enter in the casing by valve pipeline 14, hot water enters bend pipe water tank 22 through loose joint pipeline 15, enter horizontal tube water tank 23 through loose joint pipeline 16 again, discharged by valve pipeline 17, valve pipeline 18 is used for steam discharge.Cold water constantly charges into, and hot water is constantly discharged, and the flame gas of inwall encirclement and the temperature of expanded perlite are reduced fast.

The body of heater that the zone of swelling end face is following, its outer wall constitutes with the steel plate welding, and its inwall is a refractory material, and the centre is a heat-insulation layer.Salband water tank, bend pipe water tank, horizontal tube water tank are three steel construction individual components.The salband water tank connects as one by flange 12 and zone of swelling, and the bend pipe water tank connects as one by flange 13 and salband water tank.Bend pipe and horizontal tube connect as one by flange 19.The horizontal tube water tank is provided with independent rack.

The utility model founds this non-clotted slag of furnace foundation, according to the structure and the operation principle of multitubular boiler, this upright stove salband body of heater internal ring wall is equivalent to a fire tube, and the space is flame gas and the materials flow about 1000 ℃ in the wall, wall is outward a hot water, because cold water constantly enters hot water and constantly discharges, therefore, salband internal face temperature is lower than 300 ℃, and steel surface is smooth, so, even the expanded perlite of molten condition collision internal face can not pasted yet.That is to say in above 40 cm range in salband bottom surface and the freezing of a furnace phenomenon can not take place.Concerning zone of swelling, because salband body of heater bottom surface at first contacts cold water, and less contact hot flame gas, therefore salband bottom surface temperature is also more much lower than internal face temperature, in the heat balance process, the salband bottom surface will make the temperature of zone of swelling body of heater end face and following position internal face thereof reduce many.That is to say below zone of swelling body of heater end face and will reduce freezing of a furnace area and freezing of a furnace thickness in 40 cm range.Fire coal and the upright stove of fuel oil with this upright stove technical scheme design all obtain good result in production practices, produce 4 ten thousand stere expanded perlites, be equivalent to produce continuously and promptly do not find freezing of a furnace phenomenon (upright stove ability be 12 hours produce 160 cubic metres) in 3000 hours in 125 days.

The vertical stove of the utility model is compared with existing vertical stove, because basic non-clotted slag, because of the freezing of a furnace maintenance that stops production Number of times greatly reduces, and has both improved product quality and output, has saved again maintenance fund and energy consumption. The body of heater longevity Life prolongs, and the overhaul number of times reduces, and overhaul cost reduces, and in a word, the vertical stove of the utility model can significantly improve The economic benefit of enterprise.

Claims

1, a kind of vertical furnace for expanding perlite is made up of the space of body of heater and encirclement thereof, and order is burner hearth, combustion chamber, zone of swelling, salband from the bottom to top, it is characterized in that the salband body of heater is the casing that is full of fluid media (medium) with the steel manufacturing.

2, expansion furnace according to claim 1 is characterized in that the two circle ring columns of being shaped as of described casing, and the upper and lower opening between its inside and outside ring wall is closed, and is full of water between wall, and the outer wall side has water inlet and delivery port, and inwall surrounds flame gas and material space.