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Different poly energy sludge drying system

A sludge drying and sludge drying technology, which is applied in dehydration/drying/concentrated sludge treatment, energy wastewater treatment, etc., can solve the problem of limited dehumidification capacity of the evaporator, inability to quickly evaporate sludge, and slow evaporation of sludge water, etc. problems, to achieve the effect of overcoming low reliability and stability, improving system dehumidification capacity, and fast dehumidification speed

Active Publication Date: 2014-02-12
ZHE JIANG ECO ENVIRONMENTAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The new energy-saving sludge drying system also has the following deficiencies: (1) The greenhouse system is a closed system, the steam flow in the greenhouse is poor, and the high-humidity air on the sludge surface laid on the greenhouse floor cannot quickly leave the sludge surface A layer of high-humidity water film is formed on the surface, and the water in the sludge is difficult to evaporate from the sludge, and the water in the sludge evaporates slowly; (2) Use the heat-absorbing and dehumidifying evaporator installed in the greenhouse Humidity The moisture in the steam is removed. As the moisture in the sludge gradually evaporates into the greenhouse, the humidity in the greenhouse rises. The evaporator has limited dehumidification capacity and cannot reduce the humidity in the greenhouse to the ideal humidity in time. The humidity in the greenhouse On the high side, the moisture in the sludge cannot evaporate quickly, and the humidity in the greenhouse is high

Method used

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  • Different poly energy sludge drying system
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  • Different poly energy sludge drying system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 As shown, a heterogeneous sludge drying system includes a greenhouse 1, a heterogeneous heating unit 2, and a dehumidification unit 3.

[0035] The bottom layer of the greenhouse 1 is provided with an insulating layer 13, and there is a sludge drying bed 10 in the greenhouse 1, and the sludge drying bed 10 is provided with vent holes 12. The upper part of the greenhouse 1 is provided with a carrier gas outlet 11 , preferably, the carrier gas outlet 11 can be arranged on the roof of the greenhouse 1 .

[0036] The heterogeneous heat supply unit 2 includes a circuit composed of a heterogeneous heat collector evaporator 21 , a first internal heat exchanger 22 , a first compressor 23 , a first throttle valve 24 and a first floor heating coil 25 . The first floor heating coil 25 is located at the bottom of the sludge drying bed 10 . The outlet of the heat pump working medium of the heat-collecting evaporator 21 is connected to the first compressor 23 and t...

Embodiment 2

[0041] Such as figure 2 As shown, the difference between Embodiment 2 and Embodiment 1 is that the dehumidification unit 3 also includes a third heat pump evaporator 61, a third internal heat exchanger 62, a third compressor 63, a third throttle valve 64 and The second dehumidification circuit composed of the third floor heating coil 65, the third floor heating coil 65 is located at the bottom of the sludge drying bed 10, the third heat pump evaporator 61 is located in the greenhouse 1, and the third heat pump evaporator 61 is connected to a condensed water receiving tray 66. The third heat pump evaporator 61 is located on the opposite side of the first hot air device 4 and the second hot air device 38 , and the position of the third heat pump evaporator 61 is higher than that of the first hot air device 4 and the second hot air device 38 .

[0042] A third hot air device 67 is connected in parallel to the second dehumidification circuit of the dehumidification unit 3 , and ...

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Abstract

The invention relates to a different poly energy sludge drying system, which comprises a greenhouse (1), a different poly energy heat supply unit (2), and a dehumidification unit (3), wherein different poly energy heat supply unit (2) is in parallel connected with a first hot wind device (4) which is arranged on the inner wall of the greenhouse (1), the dehumidification unit (3) comprises a dehumidification room (30) arranged outside the greenhouse (1), the dehumidification unit (3) comprises a first dehumidification loop formed by a second heat pump evaporator (31), a second inner heat exchanger (32), a second compressor (33), a second throttle (34) and a second floor heating coiler (35), a dehumidification outlet (37) of the dehumidification room (30) is arranged below a sludge drying bed (10) which is provided with a ventilation hole (12), and carrier gas from the dehumidification outlet (37) returns back to the greenhouse (1) through the ventilation hole (12). The system can improve the dehumidification efficiency of the greenhouse and the drying efficiency of the sludge.

Description

technical field [0001] The invention relates to a sludge treatment system, in particular to a sludge drying system using solar heteropolymeric energy for heating. Background technique [0002] With the continuous progress of human society, mankind is facing two major problems of environmental pollution and resource shortage. According to incomplete statistics, my country has nearly a thousand waterworks and sewage treatment plants that have been built, are under construction, and are planned to be built. The sewage from these waterworks will produce a large amount of sludge after being treated by existing technologies. The volume of sludge accounts for about 0.5%-10% of the total volume of sewage. The volume of these sludges is huge, and most of the pollutants removed from the sewage are accumulated in the sludge. If a large amount of sludge is not properly disposed of, it will inevitably cause serious secondary pollution. Currently, sludge disposal methods mainly include l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/12
CPCY02W10/37
Inventor 车磊
Owner ZHE JIANG ECO ENVIRONMENTAL TECH CO LTD