CN200979168Y - Multiple water passage drum-type cold slag device - Google Patents

Abstract

The utility model discloses a multi-water channel drum-type slag cooling device, which belongs to the drum-type slag cooling device technical field. The multi-water channel drum-type slag cooling device consists of an outer cylinder and an inner cylinder, between which a water channel is formed. An inner wall of the inner cylinder is provided with a slag duct vane, and circular water pipes are arranged in the inner cylinder. The conformation comprises two circular water pipes and separates a slag cooling cavity into two independent cavities. The utility model enlarges the cooling area, promotes the cooling effects, and reduces the slag tapping temperature, thereby being essentially applied in the boiler slag tapping devices and high-temperature granule material cooling devices in industries such as energy sources, environment protection, petroleum, chemistry, and metallurgy or the like.

Description

Many water channels rolling-cylinder type slag-cooler

Technical field

The utility model relates to industrial circle boiler deslagging device, high-temperature particle material cooling devices such as being applied to the energy, environmental protection, oil, chemical industry, metallurgy, especially a kind of efficient chilling roll formula slag cooler.

Background technology

At present, what domestic circulating fluidized bed boiler slag cooler mainly adopted is two-layer cylinder formula slag cooler, rolling-cylinder type slag-cooler mainly is to form cooling jacket by inner core and urceolus, be fixed with helical blade in it, warm sludge and cooling water reverse movement and carry out heat exchange in the slag cooler cylindrical shell rotary course, cylindrical shell rotation is delivered to low-temperature zone with warm sludge from temperature end and forms cold slag, but because the rolling-cylinder type slag-cooler cooling quantity of slag is relatively large and stepless speed regulation and generally being selected for use.There are following characteristics in present rolling-cylinder type slag-cooler: because relatively large, the long service life of the rolling-cylinder type slag-cooler cooling quantity of slag, become domestic circulating fluidized bed boiler slag cooler main flow slag cooler, the rolling-cylinder type slag-cooler conveying capacity is restricted hardly, can satisfy the defeated slag requirement of large-scale cold slag machine fully.The major defect of rolling-cylinder type slag-cooler is that tapping temperature is generally more than 200 degree, because what rolling-cylinder type slag-cooler adopted at present is that inner core blade promotion material travels forward, material is in the middle of two blades, the ulking thickness height, become the cake shape half, material is very little with cooling tube wall contact area, causes the chilling temperature height, and rotary barrel is association of activity and inertia with static slag case and is located generally to leak slag.At above-mentioned situation, the key of developing large-scale cold slag machine is to increase substantially cooling effect, improves the cold quantity of slag thereby reach.And the key of cold slag effect is the contact area and the time of reducing thickness of slag layer, increasing slag and tube wall.

Summary of the invention

The purpose of this utility model provides a kind of increase film-cooled heat, increases substantially cooling effect, reduces tapping temperature, significantly improves the many water channels rolling-cylinder type slag-cooler that the quantity of slag.

In order to achieve the above object, the following technical scheme of employing of the present utility model: a kind of many water channels rolling-cylinder type slag-cooler, comprise urceolus and inner core, be formed with water channel between urceolus and the inner core, the inner core inwall is provided with leads the slag blade, also is provided with the ring-type water pipe in the inner core.This structure has two ring-type water channels, and cold slag chamber is divided into two separate chamber.

In inner core, be provided with cross chuck; This chuck internal layer is made of two separate coldplates that are " L " type, and coldplate passes the ring-type water pipe and is installed on the inner core, and the water channel in the chuck seals by inner core; This chuck skin is made of the water pipe that is arranged on the coldplate lateral wall.The cross chuck of this structure is separated into eight independently cold slag chambers with two above-mentioned separate chamber, and can carry out heat exchange with the wall inner cold water around each cold slag chamber.

In inner core, be provided with cross chuck; This chuck internal layer is made of separate two coldplates that are " L " type, and coldplate passes the ring-type water pipe and is installed on the inner core, and the water channel in the chuck is formed with water channel and communicates respectively with between urceolus and the inner core; This chuck skin is made of the water pipe that is arranged on the coldplate lateral wall.

Analyze the slag cooler heat exchange, mainly have four kinds of approach: the conduction heat transfer of slag and inwall; The inside and outside heat of inner core is transmitted; The conduction heat transfer in inner tank theca and water jacket boundary layer (water speed is zero); The heat convection of water.

Heat transfer rate depends on overall heat-transfer coefficient K

Overall heat-transfer coefficient: $\frac{1}{K}=\frac{1}{K1}+\frac{1}{K2}+\frac{1}{K3}+\frac{1}{\mathrm{<figure-callout\; id="4"\; label="K"\; filenames="Y20062003653500063.png"\; state="\{\{state\}\}">K</figure-callout>}4}$

K is an overall heat-transfer coefficient; K1 is the heat transfer coefficient of slag and inwall; K2 is the heat transfer coefficient of inner core inwall and inner tank theca; K3 is the conduction heat transfer coefficient that inner tank theca adheres to detention layer (water speed is 0); K4 is the convective heat-transfer coefficient of detention layer and turbosphere water.

K2, K3 be by hot conduction technique as can be known: it is worth 10 ⁴W/m ²More than ℃; K4 is a convective heat-transfer coefficient, and the convective heat-transfer coefficient of water has hundreds of w/m ²℃.The heat transfer coefficient of K1 has only 1/50 of water convective heat-transfer coefficient, so the heat transfer coefficient of slag, is the 'bottleneck' restrictions factor that influences overall heat-transfer coefficient.

The main cause that the heat transfer coefficient of slag is lower is material in the middle of two blades, and the ulking thickness height becomes the cake shape half, and middle most material does not contact with heat transferring medium.Material contacts many more with heat transferring medium, the coefficient of heat transfer is high more, and it is fast more to conduct heat.

According to above-mentioned principle, this programme will form some water channels and cold slag interval in the slag cooler, thereby has improved film-cooled heat and cooling effect.When urceolus and inner core rotation, material with the contact process of chuck coldplate and water pipe in, cold water pipe is taken away heat, material is a large amount of shedding in stirring process, fully contact with air, take away heat, cooling cavity in the slag cooler becomes a plurality of by one, and utilize air-cooled or water-cooled, and the corresponding raising of contact heat-exchanging area, thus heat exchange efficiency improved greatly, broken through the tapping temperature limit (about 200 degree) of cylinder type cold slag machine, reach below 100 degree, owing to kept the advantage of former rolling-cylinder type slag-cooler, the slag cooler life-span reached more than 10 years.

The utlity model has long service life, the heat exchange efficiency height, film-cooled heat is big, good cooling results, tapping temperature is low, goes out the big advantage of the quantity of slag.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A-A cutaway view of Fig. 1 among the utility model embodiment 1;

Fig. 3 is the A-A cutaway view of Fig. 1 among the utility model embodiment 2.

The specific embodiment

Below in conjunction with embodiment the utility model is described.

Embodiment 1:

As shown in Figure 1 and Figure 2, a kind of many water channels rolling-cylinder type slag-cooler, comprise a kind of many water channels rolling-cylinder type slag-cooler, comprise urceolus 1 and inner core 2, be formed with water channel 3 between urceolus 1 and the inner core 2, inner core 2 inwalls are provided with leads slag blade 7, also is provided with ring-type water pipe 6 in the inner core 2, is provided with cross chuck in inner core 2; This chuck internal layer is made of two separate coldplates 4 that are " L " type, and coldplate 4 passes ring-type water pipe 6 and is installed on the inner core 2, and the water channel 3 in the chuck is by inner core 2 sealings; This chuck skin is made of the water pipe 5 that is arranged on coldplate 4 lateral walls.

Embodiment 2:

As Fig. 1, shown in Figure 3, a kind of many water channels rolling-cylinder type slag-cooler, comprise a kind of many water channels rolling-cylinder type slag-cooler, comprise urceolus 1 and inner core 2, be formed with water channel 3 between urceolus 1 and the inner core 2, inner core 2 inwalls are provided with leads slag blade 7, also is provided with ring-type water pipe 6 in the inner core 2, is provided with cross chuck in inner core 2; This chuck internal layer is made of separate two coldplates 4 that are " L " type, and coldplate 4 passes ring-type water pipe 6 and is installed on the inner core 2, and the water channel 3 in the chuck is formed with water channel 3 and communicates respectively with between urceolus 1 and the inner core 2; This chuck skin is made of the water pipe 5 that is arranged on coldplate 4 lateral walls.

Claims (3)

1, a kind of many water channels rolling-cylinder type slag-cooler comprises urceolus (1) and inner core (2), is formed with water channel (3) between urceolus (1) and the inner core (2), and inner core (2) inwall is provided with leads slag blade (7), it is characterized in that: also be provided with ring-type water pipe (6) in the inner core (2).

2, many water channels rolling-cylinder type slag-cooler according to claim 1 is characterized in that: be provided with cross chuck in inner core (2); This chuck internal layer is made of two separate coldplates (4) that are " L " type, and coldplate (4) passes ring-type water pipe (6) and is installed on the inner core (2), and the water channel (3) in the chuck is by inner core (2) sealing; This chuck skin is made of the water pipe (5) that is arranged on coldplate (4) lateral wall.

3, many water channels rolling-cylinder type slag-cooler according to claim 1 is characterized in that: be provided with cross chuck in inner core (2); This chuck internal layer is made of separate two coldplates (4) that are " L " type, and coldplate (4) passes ring-type water pipe (6) and is installed on the inner core (2), and the water channel (3) in the chuck is formed with water channel (3) and communicates respectively with between urceolus (1) and the inner core (2); This chuck skin is made of the water pipe (5) that is arranged on coldplate (4) lateral wall.

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