1. Sewage discharge is divided into continuous sewage discharge and regular sewage discharge.
1.1. In order to keep the heated surface clean, avoid the soot and water in the furnace water and the quality of the steam is not good, the boiler must be systematically discharged.
1.2 Before discharge, it should be done well. When discharging sewage, it should pay attention to monitor the change of feed water pressure and drum water level, and maintain the water level normal. After the sewage is discharged, a thorough inspection should be carried out to confirm that the sewage valves are closed tightly.
1.3. During operation, the boiler shall be periodically drained according to the specified period (once per day shift). The sewage should be carried out at the bottom load. The discharge time of each circulation circuit should not exceed half a minute when the sewage valve is fully open. It is not allowed to open two or more sewage valves at the same time.
1.4 In operation, pay attention to the opening degree of the continuous blowdown valve according to the soda water quality control standard and test results. If it is not normal, the chemical duty personnel should be removed in time.
1.5. Continuous sewage discharge; the furnace water is discharged from the large part of the furnace water containing salt concentration zui to maintain the salt content of the rated furnace water.
1.6. Regular sewage discharge: supplement the shortage of continuous sewage discharge, and remove the sediment from the boiler water tank to improve the quality of the boiler water.
2. Sewage discharge step 2.1, open the regular discharge main valve;
2.2, first open the valve, then slowly open the secondary valve;
2.3. After the sewage is discharged, first close the secondary valve and then close the primary valve; the sewage should be slowly carried out to prevent water from impacting. If the pipeline is seriously vibrated, the sewage should be stopped, and the sewage should be discharged after the fault is eliminated;
2.4. In the process of sewage discharge, if there is an accident in the boiler, the sewage shall be stopped immediately, except that the water level of the steam drum is too high and the steam and water are together;
2.5. It is forbidden to discharge the two boilers at the same time.
3. Problems with sewage discharge 3.1. The salt content of the boiler water for long-time operation is not easy to control. The boiler water in our factory often exceeds the standard.
3.2. The boiler's regular sewage discharge work is very heavy. The boilers in our factory have 18 sets of regular sewage discharge valves, and the sewage discharge must be switched 80 times at a time. It takes four or fifty minutes. Large boilers may take more time. And the working environment is bad, hot, fine gray, noise.
3.3. In the operation, there are young workers who take the work of cutting corners, or do not discharge the sewage, or do not close the valve. There are also only a few sets of drain valves. When the boiler water exceeds the standard, even the fixed row is used as continuous sewage. Will destroy the water cycle! !
3.4. Regular sewage discharge is not strictly enforced. There will be a blockage of the drain valve, which is troublesome and has a serious impact on the life of the boiler.
3.5. When observing the sewage, observe more. When the sewage valve is fully opened, the pipe will vibrate and there will be a sharp airflow with a very low frequency. The pipe valve will heat up. If there is no reaction, it means no. It should be marked and repaired for processing.
3.6, the insulation of sewage pipes and valves should be kept intact, such as valve leakage, timely treatment, and restore insulation. Every time I overhaul, I observe that the corrosion-free corrosion of the parts without insulation is very serious.
3.7. When the row is arranged, the operation is one row to prevent the water circulation.
Safe operation when draining:
1. With special hooks and gloves. When opening and closing the valve, it should stand on the side of the valve;
2. When discharging the sewage, notify the furnace and pay attention to the water level change;
3. When the young worker is operating, he should have a skilled worker to prevent accidents.
1.1. In order to keep the heated surface clean, avoid the soot and water in the furnace water and the quality of the steam is not good, the boiler must be systematically discharged.
1.2 Before discharge, it should be done well. When discharging sewage, it should pay attention to monitor the change of feed water pressure and drum water level, and maintain the water level normal. After the sewage is discharged, a thorough inspection should be carried out to confirm that the sewage valves are closed tightly.
1.3. During operation, the boiler shall be periodically drained according to the specified period (once per day shift). The sewage should be carried out at the bottom load. The discharge time of each circulation circuit should not exceed half a minute when the sewage valve is fully open. It is not allowed to open two or more sewage valves at the same time.
1.4 In operation, pay attention to the opening degree of the continuous blowdown valve according to the soda water quality control standard and test results. If it is not normal, the chemical duty personnel should be removed in time.
1.5. Continuous sewage discharge; the furnace water is discharged from the large part of the furnace water containing salt concentration zui to maintain the salt content of the rated furnace water.
1.6. Regular sewage discharge: supplement the shortage of continuous sewage discharge, and remove the sediment from the boiler water tank to improve the quality of the boiler water.
2. Sewage discharge step 2.1, open the regular discharge main valve;
2.2, first open the valve, then slowly open the secondary valve;
2.3. After the sewage is discharged, first close the secondary valve and then close the primary valve; the sewage should be slowly carried out to prevent water from impacting. If the pipeline is seriously vibrated, the sewage should be stopped, and the sewage should be discharged after the fault is eliminated;
2.4. In the process of sewage discharge, if there is an accident in the boiler, the sewage shall be stopped immediately, except that the water level of the steam drum is too high and the steam and water are together;
2.5. It is forbidden to discharge the two boilers at the same time.
3. Problems with sewage discharge 3.1. The salt content of the boiler water for long-time operation is not easy to control. The boiler water in our factory often exceeds the standard.
3.2. The boiler's regular sewage discharge work is very heavy. The boilers in our factory have 18 sets of regular sewage discharge valves, and the sewage discharge must be switched 80 times at a time. It takes four or fifty minutes. Large boilers may take more time. And the working environment is bad, hot, fine gray, noise.
3.3. In the operation, there are young workers who take the work of cutting corners, or do not discharge the sewage, or do not close the valve. There are also only a few sets of drain valves. When the boiler water exceeds the standard, even the fixed row is used as continuous sewage. Will destroy the water cycle! !
3.4. Regular sewage discharge is not strictly enforced. There will be a blockage of the drain valve, which is troublesome and has a serious impact on the life of the boiler.
3.5. When observing the sewage, observe more. When the sewage valve is fully opened, the pipe will vibrate and there will be a sharp airflow with a very low frequency. The pipe valve will heat up. If there is no reaction, it means no. It should be marked and repaired for processing.
3.6, the insulation of sewage pipes and valves should be kept intact, such as valve leakage, timely treatment, and restore insulation. Every time I overhaul, I observe that the corrosion-free corrosion of the parts without insulation is very serious.
3.7. When the row is arranged, the operation is one row to prevent the water circulation.
Safe operation when draining:
1. With special hooks and gloves. When opening and closing the valve, it should stand on the side of the valve;
2. When discharging the sewage, notify the furnace and pay attention to the water level change;
3. When the young worker is operating, he should have a skilled worker to prevent accidents.
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