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Sludge low-temperature drying process and sludge low-temperature dryer

A drying process and dryer technology, used in dewatering/drying/concentrating sludge treatment, etc., can solve the problems of time-consuming, labor-intensive, low-efficiency, etc., and achieve the effects of high efficiency, preventing a large amount of volatilization, and saving energy.

Active Publication Date: 2019-05-10
HANGZHOU CHUAN & ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing equipment for low-temperature drying of sludge can only dry one kind of waste material. If different waste materials are to be processed, multiple drying processes and multiple settings are required, which is time-consuming, laborious and inefficient

Method used

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  • Sludge low-temperature drying process and sludge low-temperature dryer
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  • Sludge low-temperature drying process and sludge low-temperature dryer

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Embodiment Construction

[0029] In order to make the above objects, features and advantages of the present invention more comprehensible, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0030] A sludge low-temperature drying process, characterized in that the steps are as follows:

[0031] 1) At least one section 31 for placing sludge is provided, and a temperature sensor, a heating device and an air circulation device 5 are provided in the section 31, and a critical temperature and a maximum heating temperature are provided in the heating device.

[0032] 2) Place the sludge to be dried in section 31, start the heating device and air circulation device 5, and heat the sludge in section 31. At this time, the temperature of the heating device is set at the critical temperature.

[0033] 3) When the temperature sensor monitors that the temperature in section 31 reaches the critical temperature, the temperatur...

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Abstract

The invention belongs to the technical field of environment protection, and particularly relates to a sludge low-temperature drying process and a sludge low-temperature dryer. The process includes: setting at least one interval, arranging a heating device and an air circulating device in the interval, and setting critical temperature and highest heating temperature in the heating device; putting sludge into the interval, and starting the heating device and the air circulating device to heat the sludge in the interval; when temperature in the interval reaches the critical temperature, graduallyincreasing the heating temperature of the heating device within certain time until the heating temperature of the heating device reaches the highest heating temperature; when the temperature in the interval reaches the highest heating temperature, stopping the heating device, and driving hot air for further drying through the air circulating device until the temperature in the interval reaches room temperature. By the process, energy can be saved while efficient sludge drying is realized; the dryer is provided with multiple intervals, thereby being capable of drying various types of sludge atthe same time, high in drying efficiency and wide in application range.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a sludge low-temperature drying process and a sludge low-temperature dryer. Background technique [0002] There are many ways to dispose of waste, the main ways are incineration and composting, but both incineration and composting require waste with low water content, so the waste needs to be treated before use. At present, the main way of drying waste is heating and drying, that is, placing the waste in a space for heating, and then taking it out. There are many types of waste, among which the drying of domestic sludge needs to be carried out under low temperature heating. Most of the existing low-temperature drying methods are to place the sludge in one place, set the temperature and then quickly heat it to the set temperature, so as to realize the low-temperature drying of the sludge. However, this method has many disadvantages. First, there is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/13
Inventor 方刚明
Owner HANGZHOU CHUAN & ENVIRONMENTAL TECH CO LTD
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