Sludge thermal drying dry silo safety control system

Abstract

The invention discloses a safety control device and a control method for a sludge heat drying dry-material storehouse. The safety control system is provided with an on-line meter unit which comprises an on-line temperature sensor, an on-line pressure transmitter, an on-line oxygen content probe, an on-line carbon monoxide detection probe, a guide wave radar level meter used for metering the material level of the dry-material storehouse and an on-line material level switch. A nitrogen pipeline and an automatic control valve are further arranged in the dry-material storehouse. A programmable logic controller (PLC) control unit and an upper computer controller are further arranged in the safety control system. The safety control method includes micro-positive pressure inert environment controlling, smoldering early warning controlling, material level controlling and alarm operating. The safety control device and the control method for the sludge heat drying dry-material storehouse is suitable for safety controlling of a sludge dry-material storehouse, a system structure is perfect, monitoring data are comprehensive, monitoring is accurate and reliable. The safety control device and the control method for the sludge heat drying dry-material storehouse has the advantages of being high in automatic degree, convenient to operate, low in operating cost and suitable for remote monitoring, and can be incorporated in overall monitoring management of a plant area conveniently.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment equipment, in particular to a safety control system for sludge heat-drying dry material warehouse, which is used for the safety control of the sludge heat-drying dry material warehouse, Background technique [0002] In the subsequent disposal process of wet sludge, the wet sludge with a moisture content of 80% is usually dried to a moisture content of 20% or even 5% by thermal drying for the purpose of reduction, harmlessness and resource utilization. Dry granules below. Storing the sludge dry granular products in the dry silo is the last link of the wet sludge drying production line. Dry particles with too low moisture content have a high dust concentration, and are prone to smoldering during storage. At the same time, there is also a safety hazard of explosion. If not handled properly, it will cause greater safety accidents and property losses. In response to this problem, the existin...

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Problems solved by technology

But most of these existing technical measures are relatively simple, and it is difficult to guarantee safety and reliability.

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