Auxiliary heating type steam rotary dryer

A rotary dryer and auxiliary heating technology, applied in non-progressive dryers, dryers, heating devices, etc., can solve the problem of the inner wall of the cylinder and the heat exchange tube components sticking to the wall, high processing and maintenance costs, and roller materials. Problems such as poor fluidity, to achieve the effect of long maintenance time, high processing cost and maintenance cost, no return material leakage
CN102393130AActive Publication Date: 2012-03-28SHANDONG KEYUAN TIANLI ENERGY CONSERVATION ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG KEYUAN TIANLI ENERGY CONSERVATION ENG
Publication Date
2012-03-28

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Abstract

The invention provides an auxiliary heating type steam rotary dryer comprising a drum for containing a material to be dried and a rotary support device for supporting and driving the drum to rotate, wherein the drum is provided with a feed end and a discharge end, the feed end is constructed for receiving the material to be dried, the discharge end is constructed for discharging the dried material, the feed end is provided with a feed end plate, the discharge end is provided with a discharge sealing plate and a discharge cover, a plurality of heat exchange tube assemblies which rotate together with the drum are arranged in the drum, a drum heat tracing device connected with the heat exchange tube assemblies is arranged outside the drum near to the feed end area, and the drum heat tracing device rotates together with the drum. The invention adopts a drum heat tracing structural style, so that when the water content of the dried material is higher, the temperature of the drum wall can be improved to promote evaporation of water of the dried material and improve the flowing property of the material.
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Description

Technical field

[0001] The invention relates to a drying equipment, in particular to an auxiliary heating type steam rotary dryer for drying wet powder materials. Background technique

[0002] The steam rotary dryer is an indirect heat exchange rotary drying equipment that uses steam as a heat source. It is suitable for drying wet powder materials in metallurgy, chemical, environmental protection, building materials and other industries. Such as: copper fine powder, iron fine powder, nickel fine powder, coal powder, desulfurized gypsum, sulfite, etc. At present, there are two types of steam rotary dryers that are widely used in China. One is a straight tube integrated dryer, as described in EP0305706A2, that is, the heat exchange tube adopts a straight tube running through the entire cylinder, and the heat exchange tube is welded and fixed on the cylinder. Above; The other is an independent detachable dryer, as described in US6415527B1, US2006 / 0242855A1, that is, there is no fix...

Claims

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