Ion exchange equipment
Ion exchange is based on the ability of various substances to replace the adsorbed mixture to achieve the effect of concentration. Many organic substances in the fermentation industry, such as organic acids, amino acids, and enzyme preparations, can be extracted and concentrated by this method. ——离子交换树脂与混合溶液均匀充分接触，把所需的物质充分吸收在离子交换树脂上。 Generally, the ion exchange process includes three procedures of adsorption, desorption, and regeneration. Adsorption is a valence with special exchange capabilities -the ion exchange resin is in full and uniform contact with the mixed solution and the required substances are fully absorbed on the ion exchange resin. Desorption is to pass in a desorbent to the ionic resin that has adsorbed organic materials, so that various substances are replaced by the desorbent in order due to their different replacement capabilities, thereby obtaining a relatively concentrated solution. Regeneration is the activation of used and desorbed resin drugs to regain their adsorption capacity.
0.6~1.5m ，高度为 5~7m 。 Ion exchange equipment is a container that can be loaded with resin with exchange capacity to complete the above three processes. Usually, it is made into a vertical cylindrical container with an upper and lower sealing lid. The diameter is generally 0.6 ~ 1.5m and the height is 5 ~ 7m .
The vertical cylinder is equipped with a porous false bottom plate, an overflow drain outlet, a distribution plate, a sight glass, a resin inlet, a liquid level gauge, a discharge port, a resin take-out port, and a feed port. The false bottom is a porous sieve sandwiched between the lower head and the column body. It has a micro-perforated sieve on it to carry all the resin, so that the tiny exchange resin cannot flow away with the liquid flow. A layer of small stones (granite) quartz sand is laid on the ground floor before resin. The distribution plate is a spherical-shaped porous cover, which is installed in the lower part of the feeding tube to distribute the feed and make it evenly distributed. The overflow drain port is used for backflushing when cleaning resin. The overflow port is upward and installed at the highest space position in the column. The resin inlet pipe is opened in the upper part of the cylinder, and the resin outlet is opened in the lower part of the cylinder. The nozzle is large to facilitate the discharge of resin. 2~3 个视镜和液位计。 In order to facilitate the observation of the exchange process, 2 to 3 sight glasses and level gauges are installed in sections on the cylinder .
Because acid and alkali materials are often used in the process of disengagement, the equipment is required to have good anticorrosive performance. Generally, stainless steel processing is used, and the method is lined with rubber or resin.