What should be paid attention to when operating the dosing in the boiler?

The required corrosion and scale inhibitor is added to the plastic dosing box, and the agent can be continuously added at the inlet of the circulating pump (i.e., the outlet of the sump) through the metering pump after dilution with water for convenience use. The dosing concentration is 55-80mg l (in terms of replenishment water).

1. Normal operation of water quality management indicators.

It is recommended that the water quality management of circulating cooling water be implemented as follows during the trial operation.

1. Accept the reagent according to the testing standards of the reagent.

2. Adjust the dosing device.

According to the dosage and supplementary water volume of the agent, calculate the concentration of the prepared drug and the flow rate of the drug, and adjust the corresponding valve opening.

3. Prepare before switching agents.

In order to evaluate the effect of the use of the new agent and prevent the failure that may be caused by the incompatibility between the agent and the original drug, it is recommended to prepare for the switch of the relevant drug.

A Observation of cooling water system: open the condenser manhole, record, and take pictures of the corrosion and scaling of the water chamber, end plate, stainless steel pipe and expansion joint, etc., as the starting state of the evaluation agent.

b Condenser: record end difference and vacuum.

c Dosing system: check the dispensing, metering, dosing, water source, flushing, lighting, ventilation and other facilities in the dosing room, understand the capacity of the metering box and the dispensing box, check the flow meter and the stroke of the dosing pump, and check the outlet of the dosing flow.

d Laboratory: whether the instruments, equipment, drugs, reports, etc. have the conditions for drug analysis and water quality monitoring.

4. Prepare pharmaceutical agents.

According to the drug flow, dispensing cycle and metering box volume, the amount of medicine prepared per day is calculated, and the dosing system is cleaned. Pay attention to remove the insoluble matter at the bottom of the box so as not to block the pipe, flow meter. Dilute the agent to 5% to 10% concentration with water in the metering box.

Mix well and set aside.

5. The circulating water system does not need to change the water, open the relevant valve, add medicine to the cooling water, and make a record.

6. Due to the unevenness of the metal surface, there may be a micro-supersurge of metal iron ions in the treatment, so the amount of corrosion and scale inhibitor should be appropriately increased, and the concentration rate should be reduced to increase the amount of water replacement to ensure the normal operation of the water system.

What problems should be paid attention to during heating operations in boilers? Attention should be paid to the operation of dosing in the boiler. Don't make too much fire. Medium flame is best.

When dosing in the boiler, you should pay attention to the amount of medicine you put in. It depends on the structure present in the boiler.

In China, if the dosing operator pays attention to the matters to do, it is necessary to add it slowly and have a good grasp of it.

Problems that should be paid attention to when dosing operations, if you want to do it after menstruation, you should pay attention to his leakage and his high temperature problem.

1. When the user selects the dosing equipment, the selection standard (including the metering pump parameters, the volume of the mixing box, the volume of the solution box and the site conditions) is determined according to the dosing situation (usually the method of "one open and one backup" or more open and one backup) is determined according to the dosing situation.

2. According to the needs, select the raw materials (stainless steel, carbon steel, non-metallic materials), metering pump model (diaphragm pump, plunger pump) or the parameters (title, concentration, temperature, density, viscosity, corrosivity, etc.) of each component of the dosing equipment.

The above is an introduction to some precautions for boiler dosing devices. Qili environmental protection boiler dosing device has been widely used in various industries because of its advantages of compact structure, small size, low noise, stable operation, simple equipment, and convenient operation and use!

(1) Why do you want to add medicine to a hot water boiler:

1. Maintain the pH value of furnace water.

2. Eliminate the residual hardness of furnace water.

3. Avoid metal oxygen corrosion.

Effectiveness of fixed discharge: 1. Regularly remove the sludge stain at the bottom of the hot water boiler.

2. Debug the boiler water marking.

Efficiency: Gon Gon removes a small batch of pot water with high salt content to ensure steam quality.

On the one hand, regular descaling of boilers is to prolong the life of the boiler, and on the other hand, it is to protect the personal life and property safety of the majority of hot water boiler users.

2) The item of the boiler dosing thing to pay attention to.

1. In order to make the medicinal properties fully exert their effects, the dosing in the furnace should be average, and each shift can be divided into two or three times to prevent one-time dosing, and do not add the dosing before the hot water boiler blowdown. It is best to set up the dosing device in front of the water supply facility, so as not to bear the pressure of the outlet of the water supply facility. However, the dosing device must meet the relevant requirements of the pressure device.

2. For the boiler with old rust, it is best to completely sweep away the old rust before the first dosing, or open the furnace once a month after dosing, and clean the peeled old rust so as not to congest the pipeline. Later, according to the old rust stripping and boiler transportation, the interval between seizures will be gradually extended.

3. After the initial dosing, when the boiler is pressurized, if you find that there is more foam, you can reduce the loss through a small amount of sewage, and the foam will gradually disappear after the normal steam supply.

4. As long as the water is added to the pot, it can only be used when the temperature of the feed water at the outlet of the economizer or the economizer does not exceed 70 80. For boilers with an economizer outlet temperature of more than 70 80, the agent should directly participate in the water supply pipeline of the boiler or economizer outlet to avoid scale formation after the water is heated in the economizer.

5. The hot water boiler should not always be operated at a high water level to avoid entrainment of liquid medicine when the steam carries water. In order to ensure the normal operation of the hot water boiler, the boiler must be regularly dosed. For the safety of you and your family, please abide by the rules for the safe operation of the boiler, and it is dangerous to use it inappropriately.

6. After the hot water boiler is dosed, the water rust degree of the pot should be maintained at 10 2ommol l, and the pH value should be within the range of 10 12.

7. Strictly implement the sewage discharge system, resolutely keep each class discharged, and avoid the accumulation of large amounts of water slag and the generation of secondary rust. The control of sewage discharge should grasp the principle of both economy and reasonableness, that is, on the premise of ensuring the mud at the bottom of the snow washing pot, try to reduce the amount of sewage discharge, so as not to lose too many calories.

What safety precautions should be paid attention to in boiler operation 1. During the boiler fire or when the combustion is unstable, do not stand directly opposite the fire door, inspection door or burner inspection hole. 2. When there is pulverized coal air mixture flowing inside the pulverizing equipment, it is forbidden to open the inspection door. 3. When the boiler is found to be extinguished, the coal, oil and gas must be stopped immediately, and the fire can be re-ignited only after full ventilation.

4. To open the coal pipe or coal plugging in the coal hopper, special tools should be used to stand on the platform above the coal hopper, and it is strictly forbidden to enter the coal hopper and stand on the coal seam to block the coal. 5. When the coal feeder is stuck or blocked during operation, it is forbidden to directly use water to stab the blocked coal. 6. In the boiler operation and hydrostatic test, it is not allowed to use pressure welding to supplement the pressure-bearing parts.

It is also forbidden to work with pressure for twisting and tightening screws. 7. When using mobile hair dryers, staff should wear gloves and protective glasses. When blowing soot, it is forbidden to open the inspection hole to observe the combustion.

8. Gloves must be worn when discharging sewage. Sewage discharge work is prohibited when the sewage discharge device is defective or when there is lighting on the sewage discharge work site and passage. It is not allowed to open the blowdown valve with a wrench with an extended handle.

During the operation of the boiler, it is not allowed to repair the primary blowdown valve. 9. When the ash is out, the staff should wear gloves, long-sleeved clothes, long pants and long boots. When the combustion is unstable or there is fine ash sprayed outward, it is forbidden to produce ash.

The ash outlet site and the passage next to the ash outlet door must be bright. There should be no obstacles on both sides of the ash door. 10. When discharging ash from the lower part of the flue of the boiler, the operator must slowly open the baffle of the ash hopper and stand on the side to prevent scalding.

11. There should be no powder leakage in the milling system in operation, and it is forbidden to smoke or ignite near the milling equipment. It is not allowed to carry out welding operations on the running milling equipment. 12. Before cleaning or extracting the powder, the power supply should be cut off, warning signs should be hung, and the spontaneous combustion of pulverized coal should be prevented from hurting people.

Hope it can help you, please give a "good review".

First of all, it is necessary to regularly calibrate the safety valve, regularly clean and drain the level gauge, regularly calibrate the pressure gauge, regularly carry out pot water drainage, dosing according to your boiler regulations or strictly control the water quality requirements of the feed water (soft water or pure water), and regularly clean the fire pipe flue. The coal is evenly fed, the air volume is properly controlled, and the oxygen content in the flue gas is mastered.

As an important special equipment often used in daily life and production, there are many safety problems in the use process, if we can understand and master the principle of these problems, we can effectively avoid the occurrence of safety accidents.

Boiler safety valve: one of the most important safety devices of the boiler in the safety valve chamber, which can play a role in timely release and pressure reduction in the event of overpressure. The safety valve should be adjusted regularly before it can be put into use, and it should be manually discharged or functionally tested regularly during use to ensure that there are no problems such as rust and jamming that lead to the failure of the safety valve.

Boiler water level gauge: The water level gauge of the steam boiler is a device that intuitively shows the water level position in the boiler, and the normal disturbing water level above or below the water level gauge is a serious operation error, which is very easy to lead to accidents, so it is necessary to flush the water level gauge regularly and closely observe the water level position during use.

Boiler pressure gauge: The pressure gauge intuitively reflects the operating pressure value of the boiler, indicating that the operator must not operate under overpressure. Therefore, the pressure gauge needs to be calibrated every six months to ensure that it is sensitive and reliable.

Boiler sewage device: The sewage device is a device that discharges scale impurities in the boiler, which can effectively control the scaling and slag of the boiler, and at the same time, the rear pipe of the sewage valve can also be checked for leakage.

Constant pressure expansion device of boiler: The constant pressure expansion device of hot water boiler is an effective equipment to prevent boiler vaporization overpressure, and it is also an effective equipment to ensure the smooth circulation of hot water system without gas accumulation.

Atmospheric boiler: If the atmospheric boiler is installed correctly, there will be no overpressure problem, but the atmospheric boiler must pay attention to anti-freezing in winter, if the pipeline freezes to death, it must be manually thawed before it can be used, otherwise the pipeline will be blocked and overpressured, which is very important.

1. According to the standard of "Industrial Boiler Water Quality": the feed water of the pressure hot water boiler should be treated with water outside the pot, and the rated power is less than or equal to the hot water boiler and atmospheric pressure hot water boiler of the non-tube rack type pressure, the pot can be treated with dosing, but the scaling, corrosion and water quality of the boiler must be supervised, and the dosing work must be done conscientiously.

2. If you don't add medicine, it means that you don't have to treat the boiler with feed water. If the boiler is not dosed during operation, it will cause the impurities in the water in the boiler to scale on the boiler tube wall, and the fouling will affect the heat transfer efficiency of the boiler, thereby reducing the operation efficiency of the boiler. 3.

Due to the fouling of the pipe in the furnace, it will cause the overheating of the outside of the pipe wall and burn out, which will cause the boiler to scale, waste fuel and bring potential safety hazards.

If the boiler is not dosed during operation, it will cause the impurities in the water in the boiler to scale on the boiler tube wall, and if the scaling is thick, it will affect the heat transfer efficiency of the boiler, thereby reducing the operating efficiency of the boiler, and the pipe in the furnace will cause the overheating of the outside of the pipe wall due to fouling.

If no medicine is added, there is no water treatment, and the use of hard water will cause sediment to block the boiler pipeline.

A word from a friend. Long-term operation is easy to foul the heat exchanger, resulting in uneven heating, and eventually causing metal deformation and even pipe bursting.