What aspects should be paid attention to in environmental protection boiler blowdown?

Matters needing attention when boiler blowdown

　?、?Maintain a slightly higher water level during sewage discharge, and closely monitor the water level during sewage discharge. To prevent water shortage caused by sewage discharge, there can be no sound of water flow in the pipe after sewage discharge.

　　②The sewage discharge should be carried out when the load is low.

　?、跿he pollutant discharge should be carried out when the load is low.

　?、?The sewage discharge operation should be carried out shortly and intermittently. How to monitor and adjust the boiler water level

　　①The water level should be stable; ②The water supply should be frequent and the quantity should be small; ③Pay attention to the water supply capacity.

　　What is included in the normal operation of the boiler

　?、費(fèi)aintain the rated evaporation capacity of the boiler to meet the load requirements.

　?、贛aintain normal vapor pressure and temperature.

　?、跭eep the quality of saturated steam up to standard.

　　④ Keep the water level normal and the combustion normal.

　?、?Maintain the safe operation of the boiler unit and stable working conditions.

　　What is the purpose of environmental protection boiler blowdown? There are several methods

  The purpose is to:

　　①Reduce the salt content of the boiler water, avoid the co-leakage of soda and water, and ensure the steam quality.

　?、贒rain the mud and dirt accumulated on the bottom of the drum and lower header.

　　③When the water level is too high, the water level can be lowered through sewage discharge.

　　The method is to discharge sewage regularly and continuously.

　　 Scheduled discharge is a method of supplementing the lack of continuous discharge, removing the deposits in the furnace from the lower header of the boiler, and improving the quality of boiler water. Continuous discharge, also known as surface sewage, is to discharge pot water from the position with the largest salt concentration in the circulation loop to maintain the rated salt content of the boiler water.

　　Regular sewage discharge should pay attention not to discharge sewage under high load, and discharge sewage should be carried out at low load, and pay close attention to changes in the water level.

　　 Boiler blowdown operation requirements

　?、?During the sewage discharge operation, a dedicated person should monitor the water level.

　　②No other operations can be performed during sewage discharge.

　?、跘fter the sewage is discharged, check the outlet of the sewage pipe to confirm that there is no leakage.

　?、?The sewage pipe must be free to expand and contract, and cannot be completely fixed. Do not bury it directly in the soil to prevent clogging.

　　⑤ The turning point of the sewage pipe, including the reverse force of the sewage steam, should be reinforced and supported.

　?、轙he part of the sewage pipe located in the flue should be reliably insulated with asbestos rope, refractory bricks, etc., and checked frequently.

Environmental protection boiler