Sludge drying system utilizing waste heat

A sludge drying and waste heat technology, applied in the direction of dehydration/drying/thickened sludge treatment, etc., can solve the problems of less high-quality energy, waste of steam energy, lack of steam, etc., and achieve the effect of improving overall efficiency

Inactive Publication Date: 2013-01-16
浙江中治环保科技有限公司
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Problems solved by technology

[0002] In the factory, there are often high-temperature steam exhaustion, or when the boiler is selected, in order to meet part of the high-temperature and high-pressure working conditions, another part of the steam needs intermediate decompression, so the process of steam exhaustion and intermediate decompression waste of steam energy
[0003] The use of heat pumps in sludge drying systems is already a relatively common technical means. Heat pumps can achieve less high-quality energy and obtain more than three times the low-grade heat energy. However, heat pumps cannot be used fo

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  • Sludge drying system utilizing waste heat
  • Sludge drying system utilizing waste heat
  • Sludge drying system utilizing waste heat

Examples

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Example Embodiment

[0024] Example one

[0025] Such as figure 1 Shown is a system diagram of Embodiment 1 of the present invention. In the figure, the entire sludge drying system 1 includes a heat pump device 11, a sludge drying device 12, and a steam supply port 2. The heat pump device 11 is shown in the dashed box in the figure. The compressor 8 is driven to pressurize and increase the temperature of the gaseous refrigerant, and the refrigerant is driven by the condenser 6 to dissipate heat and condense into a high-pressure liquid refrigerant, which is throttled into a low-pressure liquid by the throttling mechanism 7, which absorbs heat and evaporates into a low-pressure liquid in the evaporator 5. The gaseous state is absorbed by the steam-driven compressor 8 back to the compressor, and so on. The high-temperature and high-pressure steam is drawn from the steam supply port, and the steam enters the driving part 14 of the compressor through the high-pressure steam pipeline 3 to drive the compres...

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Abstract

The invention relates to a sludge drying system utilizing waste heat. The system includes a heat pump device, an air course, and a sludge drying device. The system is characterized in that: it also includes a steam supply port, by which steam is led out to drive a compressor in the heat pump device. The compressor is a steam driven compressor. Working medium air in the air course is heated by a condensing heat exchanger of the heat pump device, and then enters the sludge drying device to dry sludge. The generation of a heat source by the steam driven heat pump can make efficient use of the pressure energy of high pressure steam, and meanwhile, the combination of generated low pressure exhausted steam, flue gas and other high temperature heat sources can be used to heat working medium air so as to generate working medium air at different temperatures. By heating sludge of different humidity with air at different temperatures, the sludge drying effect can be improved comprehensively.

Description

technical field [0001] The invention relates to a sludge drying system, in particular to a sludge drying system utilizing steam waste heat. Background technique [0002] In the factory, there are often high-temperature steam exhaustion, or when the boiler is selected, in order to meet part of the high-temperature and high-pressure working conditions, another part of the steam needs intermediate decompression, so the process of steam exhaustion and intermediate decompression Will cause the waste of steam energy. [0003] The use of heat pumps in sludge drying systems is already a relatively common technical means. Heat pumps can achieve less high-quality energy and obtain more than three times the low-grade heat energy. However, heat pumps cannot be used for high-temperature steam energy. Under high temperature conditions, the pressure will be very high, far exceeding the heat absorption capacity of existing heat pumps. For example, if heat is absorbed from steam above 100 d...

Claims

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Application Information

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IPC IPC(8): C02F11/12
Inventor 张信荣盛剑霄
Owner 浙江中治环保科技有限公司
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