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Sludge drying method and dryer

A dryer and sludge technology, applied in separation methods, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems such as low fuel utilization rate and environmental pollution, achieve good heating effect, reduce Pollution, the effect of improving utilization

Inactive Publication Date: 2016-02-24
台州市鹿通电镀有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As we all know, the traditional sludge drying method is to dry the sludge with flue gas or steam, and the gas is directly discharged after drying, which leads to low fuel utilization and serious pollution to the environment

Method used

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  • Sludge drying method and dryer
  • Sludge drying method and dryer
  • Sludge drying method and dryer

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with accompanying drawing with specific embodiment:

[0039] A method for drying sludge, the method comprising the following steps:

[0040] A: Drying: Transport the sludge to the drying cylinder 1 of the dryer, provide a heat source in the combustion hood 5 of the dryer to heat the outer wall of the drying cylinder 1, and generate heat and smoke through the combustion hood 5 The flue gas return pipe 7 is transported to the inside of the drying cylinder 1 to directly heat the sludge.

[0041] B: Desulfurization and dust removal: the flue gas in the drying cylinder 1 is connected to the water film dust collector 9 through the exhaust pipe, and desulfurization and dust removal are performed in the water film dust collector 9 .

[0042] C: Condensation: Condensate the gas after desulfurization and dust removal, and collect the condensate. Preferably, the gas after desulfurization and dust removal is cond...

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Abstract

The invention belongs to the field of sludge treatment and relates to a sludge drying method. The sludge drying method comprises A, drying: conveying sludge into a drying drum of a dryer, heating the outer wall of the drying drum by a heat source in a combustion cover of the dryer, and conveying produced flue gas and heat into the drying drum by a flue gas return pipe on the combustion cover to directly heat the sludge in the drying drum, B, desulphurization and dedusting: feeding the flue gas in the drying drum into a water film scrubber by a flue gas discharge pipe, and carrying out desulphurization and dedusting in the water film scrubber, C, condensation: carrying out condensation on the gas subjected to desulphurization and dedusting to obtain condensate water and oil, D, noncondensable gas high temperature disinfection: returning the noncondensable gas into the combustion cover and carrying out high temperature disinfection and combustion. The invention provides a dryer utilizing the sludge drying method. The sludge drying method has simple processes, a high combustion utilization rate, basically no discharge and small environment pollution. The dried sludge has low water content.

Description

technical field [0001] The invention belongs to the field of sludge treatment, in particular to a sludge drying method and a drying machine thereof. Background technique [0002] Sludge refers to the terminal waste of sewage treatment plants and various industries, namely domestic sludge and industrial sludge. These sludges contain a large number of microorganisms, pathogens, emit foul odors, and some also contain heavy metals. The hazards of sludge to the environment mainly include deteriorating water quality, polluting soil and crops, etc.; with the improvement of people's living standards and the scale of production The harmfulness of sludge, a polluting substance, is becoming more and more obvious. Appropriate sludge treatment technology should reduce, stabilize and harmless the sludge. If it is allowed to flood, the consequences will be disastrous. [0003] As we all know, the traditional sludge drying method is to dry the sludge with flue gas or steam, and the gas is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/16C02F11/18B01D50/00B01D53/00B01D53/02B01D53/26F27D17/00
CPCB01D53/002B01D53/02B01D53/266F27D17/004F27D17/008C02F11/16C02F11/18C02F2303/06C02F2103/001B01D2258/0283B01D50/60Y02P10/25Y02A50/2351
Inventor 丁燕华
Owner 台州市鹿通电镀有限公司
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