1. For boiler scale, sulfamic acid (NH2SO2OH) can be used. When used, it is prepared with deionized water to make a cleaning solution with a concentration of 1%. The pH value is between 1 and 2 and heated to about 60 °C. Phosphoric acid (H3PO4) can also be used. It can be prepared into 2% concentration cleaning solution with deionized water and heated to about 65 °C. 2. For silica scale, ammonium difluoride (NH4HF2) can be used. The ionized water is formulated into a solution having a concentration of 1.5% and heated to 50 ° C to 60 ° C.
It can also be prepared with sodium hydroxide + anionic active agent to prepare a cleaning solution with a concentration of 10% and heated to about 60 °C.
When the chemical cleaning method removes the above two kinds of scales, many users of the multi-effect distilled water machine also use the commercially available general-purpose stainless steel cleaning agent, which has good effect and is convenient to use.
Neutralization solutions are also generally required for neutralization after cleaning with an acidic solution. The preparation method of the neutralization solution is as follows:
0.5% baking soda (HaHCO3) and 0.1% anionic surfactant were added to the deionized water.
Special equipment must be prepared before cleaning equipment, mainly including:
1. The capacity of the storage tank should be greater than the amount of cleaning liquid required for the low Zui. For safety reasons, the tank should be covered. The cover is equipped with a sight glass (observing the return of the cleaning solution) and a vent.
The tank should have a heating function such as a heating jacket or an immersion heater. It should be noted that the cleaning solution cannot be heated directly with pure steam from a boiler steam or a distilled water machine, which changes the concentration of the cleaning liquid.
2. The circulating acid-resistant pump adopts an acid-resistant pump with an indenter of 2.5kg~3kg and a flow rate of 100L/min.
3. The connecting hose is used to connect the cleaning storage tank and the multi-effect distilled water machine into a cleaning circuit, and the hose should be resistant to acid and pressure.
4. The valve is used to cut off the cleaning fluid and adjust the flow rate of the cleaning fluid.
Cleaning requirements and principles When the multi-effect distilled water machine finds a significant drop in the amount of water produced during use, the multi-effect distilled water machine or the conventional inspection will find that there is obvious scaling in the tower, that is, it should be cleaned.
The reason for the formation of scale is that the pure steam generator is formed by the inorganic salts remaining in the feed water being in contact with the inner wall of the equipment for a long time and at a relatively high temperature and pressure.
Quick Release Pin
Quick Release Pins have a wide range of uses in fastening , locating , and alignment applications. The pins will not release until the button on the handle is depressed. Once the button is depressed, the balls retract into the shank allowing the pin to be inserted or removed into or out of a hole. The shanks are made from 304 or 17-4PH stainless steel. The handles for the pins listed below are made from aluminum alloy and anodized black. Stainless steel handles are also available .The pins are supplied with stainless steel split ring for attaching a cable assembly .Pins in other grip lengths are available as special orders .
The detent pins are designed to use in temporary quick disconnect operations. Used as a convenient way to adjust or remove accessories on equipment. The pin has a ball bearing on one end with a steel spring works that depresses and springs out to lock the pin into place.Rigid quality control procedures ensure a consistent fastener you can count on. Standard sizes are made from low carbon steel,zinc plated, or stainless steel.
Quick Release Pins,Ball Lock Pins,T Handle Quick Release Pin,Stainless Steel Ball Lock Pin
Ningbo Yokelink Machinery Co.,Limited , https://www.yokelink.com