Thermal system for sludge incineration

Abstract

The invention discloses a thermal system for sludge incineration, belongs to the technical field of sludge incineration, and relates to the optimization and transformation and the stable production ofthe thermal system. The thermal system comprises a deaerator, a condensate tank and a steam header, and also comprises a water sealing device; the water sealing device is internally provided with a water sealing cavity, the water sealing cavity communicates with a steam exhaust pipe of the deaerator, and is also connected with a steam evacuation pipe and a water supplement pipe, and the steam evacuation pipe is provided with a regulating valve; the water sealing device also comprises a soft water tank; and the water sealing cavity is filled with soft water through the water supplement pipe, and the soft water in the water sealing cavity communicates with soft water in the soft water tank through a balance pipeline. The thermal system greatly increases the stability of the system, so thatcontinuous production capacity is significantly improved, and thus the purposes of increasing production and improving efficiency are achieved.

Description

technical field [0001] The invention belongs to the technical field of sludge incineration and relates to thermal system optimization and transformation and stable production, in particular to a thermal system for sludge incineration. Background technique [0002] In the existing thermal system, the deaerator uses steam for thermal deoxygenation, which belongs to the core equipment of the whole plant. Once a failure occurs, the water quality will exceed the standard, which will cause great safety hazards to the thermal system equipment and pipelines. The deaerator in our factory It belongs to the atmospheric deaerator, and the following two faults occurred at the initial stage of commissioning: [0003] A. Oxygen corrosion problem: The operating parameters of the deaerator cannot be maintained at the rated working condition (20KPa, 104°C), and the deoxygenation effect cannot be achieved, resulting in oxygen corrosion of thermal system equipment and pipelines; [0004] B. Su...

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Problems solved by technology

[0002] In the existing thermal system, the deaerator uses steam for thermal deoxygenation, which belongs to the core equipment of the whole plant. Once a failure occurs, the water quality will exceed the standard, which will cause great safety hazards to the thermal system equipment and pipelines. The deaerator in our factory It belongs to the atmospheric deaerator, and the following two faults occurred at the initial stage of commissioning:

[0003] A. Oxygen corrosion problem: The operating parameters of the deaerator cannot be maintained at the rated working condition (20KPa, 104°C), and the deoxygenation effect cannot be achieved, resulting in oxygen corrosion of thermal system equipment and pipelines;

[0004] B. Supporting design problems: The deaerator supporting facilities do not meet the actual operating conditions, frequent failures, frequent shutdowns, and the entire plant cannot maintain continuous and safe production

[0005] The main function of the feed water pump in the thermal system is to transport the water in the condensate tank to the boiler for use. This equipment belongs to the core equipment of our factory. Once a failure occurs, it will cause the entire plant to stop production and cause a large safety hazard in the boiler.

The existing problem is that the position of the original design feedwater pump is only about 1 meter away from the water surface of the condensate tank. During commissioning and operation, the feedwater pump frequently has cavitation failures, which leads to water shortage in the boiler and shutdown of the whole plant.

The current problems are: due to the large amount of return water from the air cooler, if the water returns to the soft water tank, the condensate tank needs to be replenished frequently, which increases the running time of the equipment and consumes a lot of energy; The pressure is lower than that of the condensate tank, and the return water will vibrate greatly in the condensate tank, which may tear the pipe

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