Tin removal resin weakly acidic amino phosphonic acid chelating resin

NegotiableUpdate on 05/06

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Overview

Tin removal resin weakly acidic amino phosphonic acid chelating resin $r $n chelating resin is a polymer compound that can selectively chelate specific metal ions from solutions containing metal ions in the form of ionic or coordination bonds. This resin is composed of cross-linked polymers (such as styrene/divinylbenzene resin) as the skeleton, connected by special functional groups. It belongs to functional polymers.

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Tin removal resin weakly acidic amino phosphonic acid chelating resin

Chelating resins have a wide range of applications in wet metallurgy, analytical chemistry, marine chemistry, environmental protection, geochemistry, radiochemistry, and catalysis. In addition to serving as a metal ion chelating agent, it can also be used as a catalyst for oxidation, reduction, hydrolysis, olefin addition polymerization, oxidative coupling polymerization, and other reactions, as well as for the separation of racemates of amino acids and peptides. After chelating resin combines with metal ions to form complexes, its mechanical, thermal, optical, electromagnetic and other properties are altered. By utilizing this property, polymer chelates can be made into high-temperature resistant materials, photosensitive polymers, UV resistant agents, anti-static agents, conductive materials, adhesives, and surfactants. Resins are a type of cross-linked functional polymer material that can form multi coordination complexes with metal ions. Compared with ion exchange resins, chelating resins have stronger binding affinity and higher selectivity with metal ions, and can be widely used in the recovery and separation of various metal ions, the separation of amino acids, wet metallurgy, and pollution prevention and control.

Ionic membrane caustic soda specific chelating resin

In order to effectively improve the efficiency and prolong the service life of ion exchange membranes, ion exchange membrane caustic soda has higher requirements for the purity of saltwater. Traditional precipitation processes are difficult to meet the requirements for harmful ions in saltwater. Lanxiao Technology's LSC-500 amino phosphonic acid resin and LSC-100 amino carboxylic acid resin can effectively remove harmful ions such as Ca2+, Mg2+, Sr2+from saltwater, meeting the requirements of secondary saltwater ion exchange membrane processes.

Tin removal resin weakly acidic amino phosphonic acid chelating resin
With the continuous increase in domestic market demand, we will further expand our production and sales scale while improving quality and increasing variety. We will continue to serve our customers both now and in the future. We sincerely welcome new and old customers to visit our company for inspection and work guidance. Let's work together to create tomorrow!
Correct backwashing and regeneration methods for resin beds/

1. The recommended backwash speed and time in our product data are only reference standard values. At runtime, parameters need to be adjusted according to the specific situation of the user.

2. The backwash water needs to be discharged through the pipe at the upper end of the resin column. To remove broken resin particles and dirt, do not cover the pipe opening with a sieve. To prevent resin loss, a cutoff bend (curved neck pipe) can be installed on the outside of the pipe.

3. During the backwashing process, the volume of the resin bed expands by approximately>^ fen ^ 45% compared to the original volume.

4. During the backwashing process, the resin bed must be in a fluid state. This can be confirmed through observation through a window. In a fluidized resin bed, resin particles move around. But the surface of the resin bed should be calm or lightly microwaved. It cannot be due to severe local resin agitation in the resin bed.

ion exchange resin

5. When the resin bed expands to a large state, its surface should be>^ fen ^ 400mm away from the outlet. The window should be located between the expanded resin bed surface and the outlet, so that the state of the resin bed surface can be well observed.

6. The fluidization of the resin bed starts from the upper layer of resin and then flows downwards at a uniform velocity.

7. A highly compacted resin bed may take several hours to achieve fluidization, while a loose resin bed may only take a few minutes.

8. At the beginning of backwashing, there may be local resin eruption on the surface of the resin bed, resulting in a large number of resin particles suspended in the empty bed volume area, and even being flushed out of the outlet. This phenomenon will disappear with further backwashing and resin loosening.

ion exchange resin

9. Sometimes the resin bed is lifted as a compacted whole and then squeezed to the top of the water separator, resulting in damage to the water separator and/or loss of resin. To avoid this phenomenon, we recommend using a low flow rate at the beginning of the backwashing process, and gradually increasing the flow rate until the resin bed * expands.

10. The backwashing process requires the operator or process engineer to observe from time to time to adjust the operating parameters appropriately.

11. At the beginning of the backwash process, suspended fine particles are first washed out of the resin tank. Suggest regular observation of fine particulate matter appearing on the resin bed. This helps to determine whether the pre-treatment of incoming water (such as filtration) is functioning properly.

12. It is easier to observe the situation inside the resin tank through the window at night than during the day. The reflected light on the daytime window makes observation difficult. Black baffles can be used to block the light source to prevent the influence of reflected light. If a glass window is installed next to or opposite the window, it can allow light to enter the interior of the resin tank, which can better observe the situation inside the resin column.

ion exchange resin

13. During the backwashing process, it is necessary to take samples of the backwashed water from time to time. Perform chemical analysis on the fine particles washed out by backwashing. At the same time, it is also necessary to analyze the appearance of other impurities and broken resin particles.

14. The temperature of the backwash water has a significant impact on the expansion of the resin bed. This is because the viscosity of water varies with temperature. When the water temperature changes from 15 ℃ to 40 ℃, the expansion of the resin bed needs to be reduced by half.

15. In areas with large temperature differences (such as temperatures<^ fen ^ 10 ℃ in winter and>^ fen ^ 30 ℃ in summer), the water temperature can affect the expansion of the resin bed, so the backwash water flow rate must be adjusted according to seasonal conditions.

16. After backwashing, the resin bed should be left to settle and then compacted by its own gravity (settling time of about 5 minutes) to form a uniform resin bed structure.

17. During the regular backwashing process, do not use the auxiliary method of inflating. Blowing is only used when the bottom distributor (filter plate or filter) is severely clogged. The intensity of the aeration should be adjusted appropriately, without damaging any sensitive components inside the distributor. High intensity airflow may cause significant pressure on the internal components of the distributor, leading to damage.

18. In the event of an accident where a large amount of impurities are carried into the resin bed abnormally (such as a torn filter screen), the backwash procedure should be extended accordingly.

This is a very interesting process and has truly brought a lot of help to users.