Safety monitoring device and method for water-cooling wall of gasification furnace

Abstract

The invention discloses a safety monitoring device for a water-cooling wall of a gasification furnace. The safety monitoring device comprises a water-cooling wall pipe; the water-cooling wall pipe isonly provided with a water feeding connector of the water-cooling wall pipe and a water returning connector of the water-cooling wall pipe; the water feeding connector of the water-cooling wall pipe is provided with a water-cooling wall water feeding temperature measuring point; the water returning connector of the water-cooling wall pipe is provided with a water-cooling wall water returning temperature measuring point, a water-cooling wall water returning pressure measuring point and a water-cooling wall pipe flow measuring point. According to the safety monitoring device, the pressure, flowand temperature rising of the partial water-cooling wall are monitored and the heat load and state of the section of the water-cooling wall are calculated; a change tendency of the heat load and whether heat transfer deterioration exists in the water-cooling wall or not are judged in real time through a monitoring control module and an alarm is sent in time, so that an operation working conditionis adjusted in time and the safety of the water-cooling wall is ensured.

Description

technical field [0001] The invention belongs to the technical field of water cooling wall safety monitoring, and in particular relates to a safety monitoring device and method for a water cooling wall of a gasification furnace. Background technique [0002] Pulverized coal pressurized gasification technology is the main way for clean and efficient conversion of coal. The water wall constitutes the reaction chamber of the gasifier, which is the core component of the pulverized coal pressurized gasification technology. Compared with the refractory bricks of hot fireplaces, the water-cooled wall has a long service life and low cost. It does not need to replace the furnace bricks. It has good temperature resistance and can adapt to coal types with higher ash melting points; the water-cooled wall can also recover the sensible heat of high-temperature syngas , A large amount of medium-pressure steam is produced by-product, thus greatly improving energy utilization efficiency. In...

AI Technical Summary

Problems solved by technology

This method has great limitations: firstly, the embedded galvanic couple is affected by the construction, and it is difficult to agree on the embedded depth and whether it is close to the cold wall, resulting in a huge measurement deviation; secondly, the embedded galvanic couple needs to penetrate the fins of the water cooling wall It is difficult to install and overhaul, and it is difficult to replace after damage; third, the area of ​​the water-cooled wall is large, and it is impossible to arrange more temperature measuring points in the furnace, especially for the water-cooled wall Local areas with complex structures cannot arrange galvanic couples

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