Steam heat pump sludge drying system

Abstract

The invention provides a steam heat pump sludge drying system. The system includes a sludge baking box, an evaporator, a generator, an absorption tower, a preheater and a condenser. The top end of the sludge baking box communicates with the evaporator through a first air tube. The evaporator communicates with the condenser through a second air tube. The second air tube passes through the preheater. The condenser communicates with the bottom end of the sludge baking box through a third air tube. The evaporator communicates with the absorption tower through a first steam pipe. A salt solution is arranged in the absorption tower. The absorption tower communicates with the preheater through a first salt solution pipe and a first salt solution reflux pipe. The absorption tower communicates with the generator through a second salt solution pipe and a second salt solution reflux pipe. The steam heat pump sludge drying system has the advantages of small installed power, low operation cost, high energy utilization efficiency and wide application range, and has good economic value and popularization significance.

Description

technical field [0001] The invention relates to the technical field of industrial sludge reduction, in particular to a steam heat pump sludge drying system. Background technique [0002] With the continuous development of my country's economy, the continuous advancement of urbanization, and the continuous improvement of sewage treatment capacity, the amount of sludge, the final product of sewage treatment, is also increasing. ) will reach 60-90 million tons. Sludge is an extremely complex heterogeneous body composed of organic debris, inorganic particles, bacterial cells, colloids, etc. In order to avoid secondary pollution, sludge must be dehydrated and stabilized. my country's population density is high, land resources are scarce, and traditional extensive treatment methods such as landfills are difficult to continue. The harmless treatment and disposal of sludge will be a key and difficult issue in the field of environmental protection. Sludge incineration technology is ...

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Problems solved by technology

[0003] The invention provides a steam heat pump sludge drying system, the purpose of which is to solve the problem that the existing electric heat pump sludge drying technology often faces the situation of insufficient transformer capacity and abundant steam in practical applications, which restricts its further promotion The problem

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