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Sludge superheated steam triple-effect combined drying device

A technology of superheated steam and combined drying, applied in dehydration/drying/concentrated sludge treatment, etc., can solve the problems of low efficiency, high energy consumption, secondary pollution and drying time, etc.

Inactive Publication Date: 2013-02-20
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

[0004] The main purpose of the present invention is to use superheated steam as the drying medium to carry out three-effect drying treatment on urban sludge, so as to solve the problems of high energy consumption, secondary pollution caused by tail gas emission, long drying time and high efficiency in the application of traditional drying methods to sludge drying. low technical problems

Method used

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  • Sludge superheated steam triple-effect combined drying device

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Embodiment Construction

[0020] like figure 1 As shown, the present invention is achieved in that one end of the first effect dryer 2 is connected to the steam pipe 1, and the other end of the first effect dryer 2 is connected to the separator I3 through the discharger 4, and the separator I3 is connected to the condenser 5, The condenser 5 is connected to the first effect dryer 2, and the bottom of the first effect dryer 2 is provided with a stocker 6, and the stocker 6 is connected to one end of the charging forming device 7, and the other end of the charging forming device 7 is connected to the second effect Dryer 8, the upper side of the second effect dryer 8 is connected to the separator II9 through a steam pipe, the storage hopper 10 of the second effect dryer 8 is connected to the third effect dryer 13 through a pipeline, and the third effect The upper side of the dryer 13 is connected to the separator III 19 through a steam pipe, and the steam generator 12 is connected to the third effect dry...

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Abstract

The invention relates to a sludge superheated steam triple-effect combined drying device. One end of a first-effect dryer is connected with a steam pipe. The other end of the first-effect dryer is connected with a separation device I through a discharging device. The separation device I is connected to a condenser. The condenser is connected to the first-effect dryer. A material storage device is arranged below the first-effect dryer. The storage device is connected to one end of a feeding and molding device. The other end of the feeding and molding device is connected to a second-effect dryer. A separation device II is connected to the upper part on a side of the second-effect dryer through a steam pipe. A material storage hopper of the second-effect dryer is connected to a third-effect dryer through a pipe. Compared with a traditional hot-air convective drying process, the device provided by the invention has the characteristics that: energy cascade utilization is realized, and energy efficiency is higher than a single-effect drying process. Harmful gas amount of a sludge processing process is greatly reduced, and tail gas processing cost is reduced.

Description

technical field [0001] The invention relates to a sludge drying device, in particular to a sludge superheated steam three-effect combined drying device. Background technique [0002] The remarkable feature of municipal sludge is its high water content. The water content of the activated sludge initially precipitated is as high as 97% to 99%, and the water content after concentration and digestion is still as high as 90 to 92%. The sludge filter cake after mechanical dehydration The moisture content is 70% to 85%. Due to the high moisture content and bulky volume of municipal sludge, it brings economic and technical difficulties to the long-distance transportation and subsequent treatment of sludge. The sludge landfill needs to be mixed with a large amount of soil due to the high moisture content of the dewatered cake (generally 70% to 85%) and poor soil mechanical properties, which leads to a significant decrease in the volume utilization coefficient of the land. In 2007, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12
Inventor 张绪坤朱保利余蓉马怡光魏伟王学成苏志伟
Owner NANCHANG HANGKONG UNIVERSITY
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