Sludge heat pump drying system and method

A technology of heat pump drying and heat pump system, applied in the direction of sludge drying, heat pump, progressive dryer, etc., can solve the problems such as the dehumidification rate needs to be improved, the working temperature limit, etc., to improve the dehumidification rate, improve the efficiency, and increase the air temperature Effect

Active Publication Date: 2021-05-14
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present invention provides a sludge heat pump drying system and method, which is used to solve or partially solve the problem that the current heat pump sludge drying technology is limited by the working temperature of the heat pump, and its dehumidification rate still needs to be improved

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  • Sludge heat pump drying system and method

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Embodiment Construction

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected...

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Abstract

The invention relates to the technical field of drying equipment, and discloses a sludge heat pump drying system and method. The sludge heat pump drying system comprises a drying machine and a carbon dioxide heat pump system, wherein the carbon dioxide heat pump system comprises a compressor, an air cooling assembly, a throttling valve and an evaporation assembly which are sequentially connected, the working medium of the carbon dioxide heat pump system is carbon dioxide, the air cooling assembly and the evaporation assembly are arranged in the drying machine, the air cooling assembly comprises a plurality of air coolers which are connected in series, and the evaporation assembly comprises a plurality of evaporators which are connected in series. According to the sludge heat pump drying system and method, carbon dioxide serves as the working medium of the heat pump system, so that air outlet temperature higher than that of a conventional heat pump system can be obtained; and by arranging the multiple air coolers and the multiple evaporators, heat released by carbon dioxide can be utilized to the maximum extent, the dehumidification rate is effectively increased,the efficiency of the heat pump system is improved, and energy is saved.

Description

technical field [0001] The invention relates to the technical field of drying equipment, in particular to a sludge heat pump drying system and method. Background technique [0002] As industrial and domestic waste, the main components of sludge mainly include inorganic components, organic particle components, biological bacteria components and other colloidal components. Except for some harmful substances such as heavy metals, most of them can be Improve soil fertility, high calorific value, and the dried sludge is used for building boards, biological fertilizers, fuels, etc. Common sludge drying methods include high-temperature thermal drying, vacuum drying, radiation drying, etc., but there are problems such as large initial investment in equipment, high drying energy consumption, and high operating costs. [0003] The low-temperature thermal drying technology represented by heat pump sludge drying technology is a better sludge treatment method, which can significantly re...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B15/18F26B21/00F26B25/02F28B9/08F25B30/02
CPCF26B15/18F26B21/002F26B25/02F28B9/08F25B30/02F26B2200/18
Inventor 张振涛张鹏杨俊玲张化福越云凯张钰刘尚卿
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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