Suspended-state outer-circulation drying system

A drying system and external circulation technology, which is applied in dehydration/drying/thickened sludge treatment, water treatment parameter control, water/sludge/sewage treatment, etc., can solve problems such as large structure, large heat loss, and low thermal efficiency , to achieve the effect of avoiding multiple cycles, adjusting the particle size of the finished product, and improving the heat exchange efficiency

Active Publication Date: 2017-12-15
北京中科领向环保研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common drying equipment is not suitable for high-humidity and high-viscosity materials, and the multi-structure is huge and complex, wi

Method used

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  • Suspended-state outer-circulation drying system
  • Suspended-state outer-circulation drying system

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1

[0030] Such as figure 1 , The suspension external circulation drying system of the present invention mainly includes a dryer 11, a circulation separator 20 and a cyclone separator 24.

[0031] The discharging pipe 01 at the feeding end of the dryer 11 is provided with a first-stage dispersing device 03, and a lock valve 02 is installed in front of the first-stage dispersing device 03. The feed inlet is provided with a material disperser 04, the dryer 11 has multiple sections up and down, and a spraying neck 12 is set between adjacent sections. At the bottom of the last section, a bottom spraying neck 05 is set, and the material disperser 04 is connected to the side of the bottom spraying neck 05. The bottom of the dryer 11 is equipped with a second-stage material dispersing equipment 06, the lower part of the second-stage dispersing equipment 06 is connected to the air inlet 07, the bottom is the ash collection bin 08, and the bottom of the ash collection bin 08...

Example Embodiment

[0036] Example 2

[0037] Such as figure 2 , The return system of the gooseneck elbow 14 and the gooseneck elbow 14 is cancelled at the outlet of the dryer 11. In some low-moisture sludge treatment processes, the gooseneck elbow 14 can be omitted to reduce the system resistance and reduce the system Energy consumption, the rest of the structure is the same as the first embodiment.

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PUM

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Abstract

Disclosed is a suspended-state outer-circulation drying system. The system comprises a drying device, a recycling separator and a cyclone separator; a first air locking valve and a first-stage scattering device are arranged on a first feeding pipe at a material feeding end of the drying device; a first material disperser is arranged at a material feeding opening; a second-stage scattering device is arranged at the lower part of the drying device; an air inlet pipe and an ash collecting chamber are arranged under the second scattering device; a material discharging pipe which is equipped with a second air locking valve is arranged at the bottom of the ash collecting chamber; the recycling separator is connected with a top outlet of the drying device, and ash-containing gas which flows out of the drying device enters the recycling separator tangentially; a first air outlet is arranged at the top of the recycling separator; a second feeding pipe which is equipped with a fourth air locking valve is connected with a bottom outlet of the recycling separator; the cyclone separator is connected with the first air outlet, and the ash-containing gas enters the cyclone separator tangentially; a second air outlet is arranged at the top of the cyclone separator; and a third feeding pipe which is equipped with a fifth air locking valve is connected with a bottom outlet of the cyclone separator. In the drying system provided by the invention, an outer-circulation system is used to separate, scatter and continue to dry large particles, so that the drying capacity per unit volume of a dryer is increased, material are dried completely, and heat efficiency of the system is increased.

Description

technical field [0001] The invention belongs to the technical field of industrial sludge treatment, in particular to a suspended external circulation drying system. Background technique [0002] With the rapid development of industrial production, environmental pollution is becoming more and more serious. However, people's awareness of the protection and improvement of the living environment has been continuously strengthened, and the laws and regulations related to environmental protection also have strict regulations on the discharge standards of wastewater. Various production enterprises and factories generally establish corresponding wastewater treatment facilities. The increase of wastewater treatment facilities is bound to increase the output of industrial sludge. Industrial sludge is the sedimentation aggregate produced by industrial wastewater after sewage treatment. Industrial sludge generally contains toxic and harmful components. The newly generated sludge is b...

Claims

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Application Information

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IPC IPC(8): C02F11/12B01D45/16
CPCB01D45/16C02F11/12C02F2201/002C02F2209/02C02F2301/046
Inventor 王慧苏琦杜旭升
Owner 北京中科领向环保研究院有限公司
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