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System for drying sludge by solar energy

A solar energy drying and sludge technology, applied in drying, dryer, heating device and other directions, can solve the problems of high overall cost and large energy, and achieve the effect of saving equipment investment, reducing energy consumption and saving energy.

Inactive Publication Date: 2008-07-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of boiler waste heat flue gas drying needs to be equipped with tail gas treatment devices; and the use of auxiliary fuel or electric heating will consume a lot of energy, so the overall cost of the above heat source supply methods is relatively high

Method used

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  • System for drying sludge by solar energy
  • System for drying sludge by solar energy
  • System for drying sludge by solar energy

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Embodiment Construction

[0027] Referring to the accompanying drawings, the present invention will be described in detail below in conjunction with embodiments.

[0028] The entire solar drying system is mainly composed of a spiral rotary sludge drying molding machine 1, a solar collector 2, a heat transfer oil tank 3 and a heat transfer oil pump 4.

[0029] The spiral rotary sludge drying molding machine 1 includes a shell, and two hollow thermal shafts 5 connected to the transmission mechanism are installed inside the body, and several hollow wedge-shaped paddles 6 are arranged on the hollow thermal shaft 5, and the wedge-shaped paddles 6 are connected with the hollow thermal shafts. The shaft 5 is internally connected, and of course the propeller blades can also be selected as propeller blades.

[0030] The two ends of the hollow thermal shaft 5 are respectively connected to the heat transfer oil inlet 7 and the heat transfer oil outlet 8, and the jacket 9 is arranged on the shell, and the heat tra...

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Abstract

The invention relates to a harmlessness and resource utilization technique of solid waste, aiming to provide a system for drying sludge using solar energy. The system comprises a rotary screw sludge drying and shaping machine, wherein at least one hollow thermal shaft is disposed inside the machine body and connected with a transmission mechanism, a plurality of hollow blades are disposed on the hollow thermal shaft, the heat-conducting oil outlets of the hollow thermal shaft and the shell are all connected with a heat-conducting oil tank via pipelines, the heat-conducting oil inlets of the hollow thermal shaft and the shell are all connected with a solar heat collector via pipelines, and the heat-conducting oil tank, a heat-conducting oil pump and the solar heat collector are connected with pipelines. The invention realizes sludge drying using solar energy, so as to remarkably the energy consumption during sludge drying process; uses heat-conducting oil as the heat transfer medium of the solar heat collector, so as to improve the heat transfer effect of the system; and makes the sludge particles into fuel, so as to take full advantages of the heat in the sludge and be in favor of further grinding and incineration.

Description

technical field [0001] The invention relates to a technology for harmless and resourceful treatment of solid waste, and more specifically, the invention relates to a system for drying sludge by using solar energy. Background technique [0002] With the acceleration of my country's urbanization process and the strengthening of urban infrastructure construction, the urban sewage treatment rate has gradually increased, accompanied by a large amount of excess sludge. If these sludges cannot be treated in a timely, effective and stable manner, it will bring great hidden dangers to the safety of our regional environment and people's lives. In addition, industrial processes such as papermaking, chemical and pharmaceutical industries, and dredging of rivers and lakes also generate large amounts of sludge. The harmless treatment of sludge has become a major environmental protection problem that must be solved in the process of urban scientific development. [0003] The moisture con...

Claims

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Application Information

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IPC IPC(8): F26B17/20F26B23/10
Inventor 严建华王飞马增益池涌李晓东蒋旭光陆胜勇杨家林金余其倪明江岑可法
Owner ZHEJIANG UNIV
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