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Spherical Digester


Key words:

Spherical Digester

rotary spherical digester


Classification:


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Rotary spherical digester is mainly composed of a sphere, a base, a transmission and other parts. The spheres are made of steel plates welded or riveted. A charging hole is opened at the vertical centerline of the sphere for charging and feeding the material and cooking liquid chemical.


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Detailed introduction

A kind of rotary steaming and pulping equipment. It itself is spherical and mainly consists of a sphere, a base, a transmission device and other parts. The sphere is welded or riveted from steel plate. A loading hole is cut in the vertical centerline of the sphere for loading and feeding materials as well as steaming chemical liquids. Steam for steaming and heating as well as condensate is discharged from the hollow shaft. The advantages of the digester are that the raw materials and pulp inside the ball are fully mixed, the pulp quality is relatively uniform, the liquid ratio is low, the concentration of liquid is high, the cooking time can be shortened, the equipment is simple, less investment, easy to manage and maintain. The disadvantage is that the area is large, the steam is discharged directly, and the concentration of liquid chemicals changes greatly. It is mostly used in small and medium-sized pulp mills. Steam ball produced in China according to the volume size of 14m³, 25m³ and 40m³ several kinds.
The structure is divided into three parts:
Sphere part (sphere and material hole cover, main bearing): the sphere is made of steel plate welded or riveted.
The seat part: made of welded steel plate or concrete.
Transmission part (turbine, worm gear, reducer, motor)

Techniacal Parameter:

Product name Spherical digester
Max designed Pressure 0.88MPa
Max working pressure 0.8MPa
Hydraulic test pressure 1.26MPa
Design temperature 200℃
Sphere nominal inner diameter 4300mm
Sphere volume 40m³
Sphere rotate speed 0.48r/min
Feeding hole size 1150mm
Rotate the triangle belt specification B2000
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