Backwash system measured by instruments

I’m not sure whether you use petrochemical or chemical standards? We usually take over the recoil on our own. There are some typical pipeline connection diagrams in the construction manual; you can take a look at them

Our company does produce it! It’s called a isolation fluid flushing device!

The instruments used in backwashing and backblowing systems are basically low-flow air supply devices, such as flow-limiting orifice plates or micro-pressure gauges; the media used include instrument air, nitrogen, etc. Their purpose is to prevent pipe blockages and provide protection. Detailed information can be found in the design manual.

Low-flow backblowing is primarily intended to keep the pressure guiding pipelines unobstructed.

It’s used for flues, with diagrams illustrating the typical connection methods

“Operating Procedures for FG-800 Electromagnetic Magnetic Separator” I. Operating principles: When starting up the equipment – power it on first, then supply water! Shutting down the equipment – turn off the water first, then the power! The switching operations of the power supply, as well as emergency shutdowns in case of emergencies, must also be carried out in accordance with the above principles. II. Main technical parameters: 1. Water treatment capacity: 100 T/H 2. Operating pressure: 1.0 MPA 3. Water temperature during treatment: ≯95°C 4. Maximum excitation current: 200 A 5. Maximum excitation power: 65 KW 6. Insulation class: Class B 7. Magnetic leakage (at a distance of one meter from the casing): ≦0.5 MT 8. Initial pressure difference: 0.03 MPA 9. Final pressure difference: 0.05 MPA 10. Cleaning method: Alternating air and water cleaning 11. Compressed air pressure: 0.2~0.4 MPA 12. Coil cooling method: Water-cooling 13. Coil cooling water: Deionized water 14. Pressure of coil cooling water: ≯0.4 MPA 15. Temperature of coil cooling water: ≯40°C 16. Flow rate of coil cooling water: 1～2 T/H III. Steps for putting the iron remover into operation: 1. Adjust the flow path of the deoxygenated water in and out of the system; open the drain valve of the auxiliary line of the iron remover and use the auxiliary line for flushing first. 2. Before operation, turn on the cooling water for the coil of the iron remover, maintain the cooling water pressure within the range of 0.3±0.05 Mpa, and control the flow rate at 2.0 t/h. 3. After the cooling water for the electromagnetic coil is supplied properly, power is supplied to the electromagnetic coil; the control cabinet is set to mode 1, and the current and voltage at that mode are recorded. 4. Open the water release valve of the iron remover, and slowly open the outlet valve of one iron remover so that the deoxygenated water can drive out the air inside the iron remover. Use the same method to drive out the water from the other magnetizer as well. 5. Fully open the inlet and outlet valves of the two iron removers, close the drain valve, and allow water to flow through the iron removers. 6. When the iron remover is in use, the operators on the inside and outside must coordinate well, using the pressure control valve to keep the water inlet pressure within the range of 0.7±0.05 MPa. 7. Contact the quality inspection center to analyze the iron ion concentration in the feed water; if the concentration is above the limit, increase the setting of the control cabinet. 8. Observe the current, voltage, and sampling analysis results on the control cabinet; water can be supplied to the deaerator only after all three values are stable. At the same time, reduce the manual valve at the return station (be careful not to cause overpressure during operation). IV. Monitoring and adjustment in actual operation: 1. During operation, it is necessary to carefully monitor the water supply pressure of the iron remover, as well as the cooling water pressure and flow rate. 2. Carefully observe and record the current and voltage during operation, and conduct sampling analyses in a timely manner to keep the iron ion concentration within the specified range; otherwise, backwashing is required. 3. During winter production, special attention must be paid to preventing freezing in the unpurified air and cooling water systems. V. Backwashing procedure for iron removers: 1. First, close the water inlet valve of the iron remover that is to be backwashed, and then close the water outlet valve; care should be taken to prevent overpressure in the system at this time. 2. Turn off its power supply and open the drain valve. 3. Open the non-purified air valve to back-blow and remove the water accumulated in the iron remover into the gutter. 4. Use the water supply valve at the bottom to slowly fill it with water, driving out the air inside; once water is present, slowly close the water supply and drainage valves. 5. Based on the color of the backwash wastewater, repeated flushing can be carried out until the water is clean, at which point it can be put into operation. 6. The same method can be used to rinse the other unit. VI. Removal of the iron remover: 1. First, fully open the auxiliary valve of the iron remover. 2. Close the inlet valve and outlet valve of the iron remover. 3. Turn off the power to the electromagnet section. 4. Open the drain valve and the non-purified air valve to drain the water stored in the iron remover. 5. There is no need to stop the coil cooling water. If shutdown is necessary, wait until you can confirm with your hand that the temperature at the cooling water drain of the iron remover has indeed dropped before shutting down the power. 6. It is absolutely not allowed for an iron remover to operate alone.

Currently, orifice plates for flow limitation are used less often; purge-type rotameters offer greater control capabilities. Backwashing is highly dependent on the installation location, which is why there is still no standard catalog available at present