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System for making plants for drying solid organic substances in aqueous phase capable of causing explosive reactions safe and process for drying said substances

a technology of solid organic substances and aqueous phase, which is applied in the field of land reclamation, can solve the problems of high cost of making and managing drying plants, and achieve the effect of reducing the risk of explosion and high drying degr

Inactive Publication Date: 2011-09-29
GEOLINE S R L ROZZANO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The process effectively reduces costs and ensures safety by achieving high dryness levels while avoiding explosive risks, with energy savings and flexibility in process conditions, allowing for a product with a dry substance fraction of 80% or higher at reduced operational costs.

Problems solved by technology

Although they are advantageous and achieve their purpose, these solutions are not without drawbacks such as rather high costs for making and managing the drying plant, due to the high cost of inert gases and the energy consumption due to their use in the drying process.

Method used

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  • System for making plants for drying solid organic substances in aqueous phase capable of causing explosive reactions safe and process for drying said substances
  • System for making plants for drying solid organic substances in aqueous phase capable of causing explosive reactions safe and process for drying said substances

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[0070]In a turbodrier A made from special stainless steel AISI 304 of the type schematically described above, in which the bladed rotor is made to rotate at a peripheral speed of about 35 m / s and in which the inner wall is kept at 240° C., a continuous flow of a residual sludge from a purification process of sewage, having a water content equal to 80% by weight, is fed with a flow rate of 1000 kg / hour through the inlet opening of the turbodrier.

[0071]Immediately at the inlet of the turbodrier A, the flow of sludge is mechanically dispersed into minute particles, which are immediately centrifuged against the inner wall of the turbodrier, where they form a dynamic thin tubular layer.

[0072]After a residence time of about 2 minutes in the turbodrier A, from the outlet opening thereof 285 kg of sludge is discharged in disgregated wet solid form at a temperature of 80° C. and having a humidity content of 30% by weight, which is fed continuously into the drier B, in particular a drier of t...

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Abstract

The present invention refers to a plant for carrying out a process for drying solid organic substances in aqueous phase. The plant includes a turbodrier and a continuous drier connected downstream of said turbodrier.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present invention is a divisional of U.S. application Ser. No. 11 / 862,454 filed on Sep. 27, 2007, which claims priority to and benefit of Italian Application No. MI2006A001846 filed on Sep. 27, 2006, the contents of which are hereby incorporated by reference.FIELD OF THE INVENTION[0002]The present invention concerns the technical field of land reclamation and in particular refers to a process for drying solid organic substances in aqueous phase capable of causing explosive reactions, such as residual sludge from purification processes.[0003]More specifically the invention concerns a process of the aforementioned type, which allows such organic substances to be dried in conditions such as to avoid triggering explosive reactions from the finely divided organic powders obtained through dryingBACKGROUND OF THE INVENTION[0004]The processes currently used to dry solid organic substances in aqueous phase, such as sludge coming from purificat...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F26B23/00F26B11/04F26B11/06
CPCF26B17/205F26B2200/18F26B23/002F26B17/24Y02P70/10
Inventor CEREA, GUISEPPINA
Owner GEOLINE S R L ROZZANO
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