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    Spiral plate heat exchanger maintenance cleaning and troubleshooting
    Heat exchangers play a role in the chemical production process, and their investment costs account for the large investment costs. The traditional shell-and-tube heat exchanger has a low heat transfer area per unit volume and a low heat transfer coefficient. Therefore, more and more attention has been paid to the research of high-efficiency heat exchangers. Increasing the heat exchange efficiency of the heat exchanger is the key to saving energy and reducing the investment in the project, and it attaches importance to improving the heat transfer efficiency.

    Depending on the purpose of use of the gasket and the quality of the seal, it is possible to use blending sealants and non-harmonic sealants from different manufacturers. Prior to bonding, a stream of steam should be used to remove the adhesive remaining on the bonding surface and the remaining gasket. In the case of blended sealant bonding, residual adhesive and residual seals on the bonding surface of the spiral plate heat exchanger are burned off. When bonding in large quantities, a liquid nitrogen pool of a cryogenic seal should be prepared, and a heating furnace for drying the plate heat exchanger with a gasket should be prepared. The heating temperature should reach 160°C. The heat exchanger is chemically cleaned, and the seal of the adhesive member remaining in the joint surface of the spiral plate heat exchanger is retained.

    In the production process, due to the erosion of water, erosion of cavitation, and corrosion of trace chemical media, the tube plate of the spiral tube plate heat exchanger often leaks at the weld of the tube plate, resulting in the mixing of water and chemical materials, and the production process temperature is difficult Control, resulting in the production of other products, seriously affecting product quality. After the weld seam of the condenser tube plate is leaking, the enterprise usually uses the traditional repair welding method to repair. The internal pressure of the tube plate is prone to internal stress, causing leakage of other heat exchangers. The enterprise presses and inspects the equipment repair and repairs repeatedly. In the experiment, 2 to 4 people needed a few days to complete the repair. After a few months of use, the welds in the tubesheets were again corroded, which caused the company to waste manpower, material resources and financial resources, and increased production costs. Through the corrosion resistance and erosion resistance of Fu Shilan polymer composites, the new heat exchangers are protected in advance. This not only effectively solves the problems of weld seams and sand inclusions in new heat exchangers, but also corrodes the heat exchangers after use. The metal surface and welding point of the device can also be coated with Fusco blue polymer composite material to protect the exposed metal during subsequent regular maintenance; even if leakage occurs after use, it can be timely repaired by Fu Shilan technology, avoiding long Time welding maintenance affects production. It is precisely due to such fine management that the probability of heat exchanger leakage problems is greatly reduced, which not only reduces the equipment procurement costs of the heat exchanger, but also ensures product quality, production time, and improves product competitiveness.

    In addition, the cleaning and cleaning of the spiral plate heat exchanger is introduced. Only the correct cleaning and maintenance can extend the life of the spiral plate heat exchanger. Usually, people find it through the drip in the cold flow of the process equipment or the leakage in the cooling process. Heat exchanger seal failure, some spiral plate heat exchanger with a secondary regulation function, promised that in the event of a small amount of leakage, the heat exchanger chip set can be tightened again. This increases the stress between the seals and resolves the drip in a short time. In newly assembled heat exchangers, larger combined length dimensions can be used. When a dripping occurs, each group of screw plate heat exchangers is then tightened to use a longer combined length dimension. The largest combined length dimension and the smallest combined length dimension are generally available on the heat exchanger's nameplate. It should be noted that it cannot be smaller than the minimum combined length dimension. When the assembled heat exchanger reaches the minimum combined length size and there is still a drip, it means that the seal must be changed.
    Copyright: Wuxi Rongfeng Biological Engineering Co., Ltd.
    Address: Shuangxin Economic Zone, Taihu Street, Binhu District, Wuxi City, Jiangsu Province
    Tel: +86-510-85188362    Fax: +86-510-85188362    Web: www.rfswgc.com    Email: hxj@rfswgc.com