Sludge hydrothermal drying treating device and hydrothermal reactor thereof

Abstract

The invention provides a sludge hydrothermal drying treating device and a hydrothermal reactor thereof, wherein the sludge hydrothermal drying treating device comprises a homogenous reactor, a slurrying reactor, the hydrothermal reactor and a flash evaporation reactor which are sequentially connected. The homogeneous reactor is used for smashing and stirring materials which are conveyed to the slurrying reactor to perform even preheating, the preheated materials are performed with a hydrothermal reaction in the hydrothermal reactor and then are stored in the flash evaporation reactor, and steam recovered by the flash evaporation reactor can be led in the slurrying reactor and / or the hydrothermal reactor. The sludge hydrothermal drying treating device hydrolyzes sticky organics in sludge at certain temperature and pressure, breaks the colloid structure of the sludge and promotes separation of bound water and solid particles. The hydrothermal reactor can evenly heat sludge materials and improve pressure, leads the sludge materials to be performed with the hydrothermal reaction evenly enough, and accordingly the aim of dehydration can be achieved.

Description

technical field [0001] The invention relates to the technical field of sludge hydrothermal drying treatment, in particular to a sludge hydrothermal drying treatment device and a hydrothermal reactor thereof. Background technique [0002] With the rapid development of the global economy and people's increasing concern for the environment, the amount of sewage treatment has increased rapidly, leading to the rapid expansion of sludge production. At present, my country's annual discharge of dry sludge is about 5 million tons, and the amount is still increasing. Improper sludge treatment will cause serious secondary pollution, and the investment and operation costs of sludge treatment are huge, accounting for 25% to 65% of the investment and operation costs of the entire sewage plant, which has become a heavy burden for urban sewage treatment plants. Therefore, how to dispose of excess sludge economically and efficiently, and realize sludge stabilization, harmlessness, and resou...

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Problems solved by technology

[0008] However, the existing sludge hydrothermal drying treatment devices have the problems of poor reaction effect and poor material continuity, so the efficiency of sludge hydrothermal drying is still very low

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