Reasons and solutions for leakage of graphite heat exchangers

Around us, environmental protection equipment is becoming more and more, because the pollution caused by production is becoming more and more serious. The appearance of environmental protection equipment has also brought a lot of convenience and convenience to our lives. We should know that graphite has many properties, especially in the purification of this piece, it also plays a very important role. Graphite heat exchanger is one of our commonly used graphite equipments. We should pay attention to some matters when installing it. Because incorrect installation can easily cause damage to it, its installation address is required: graphite heat exchanger It should be placed on a stand that meets the height requirements and should have a reliable balance. In addition, a discharge valve should be installed to prevent the discharge from parking and prevent accidents. Nut device: The purpose of sealing is achieved by tightening the main bolts to press them against each other. The sealing surface should be specially protected. When tightening the main bolts, the specified tightening torque should not be exceeded to restore good sealing performance. When tightening the bolts, tighten them symmetrically and step by step according to the opposite angles. The bolts are easily loosened after transportation and removal, and the equipment should be carefully inspected and adjusted before installation. 

With the rapid progress of production level, more and more new materials begin to appear in our production. Many materials have their own characteristics, and these characteristics are used in our production with very useful effects. We should all know about graphite. It can be found in many devices and materials. The graphite heat exchanger is the equipment for processing graphite materials. Its appearance meets the demand for graphite in the market, but if a fault occurs, it will greatly affect the characteristics of graphite. When there is a problem of two-phase medium leakage, the first thing to check is It is not the quality of the graphite that is the problem, and then check whether the glue of the graphite heat exchanger is normal, whether there is dissolution, aging, or deterioration, and the impact of driving may come from heat or water hammer. Solution: quality problems need to be replaced, the adhesive needs to be glued again, the impact force should be balanced, and the drainage should be early. The cracking of the graphite tube may be the problem of the fast feeding speed of starting and stopping the equipment during operation. Solution: Ensure smooth operation. The system shows a large amount of bombardment of materials, which is not smooth, resulting in unstable operation. Solution: Adjust the balance of materials and system operation before operation. As long as the problem is found, it is very simple to deal with the failure of the graphite heat exchanger, and deal with the problem correctly. 

Graphite has good properties, so the application of graphite-based process equipment in our lives is very extensive. As one of them, graphite heat exchangers are widely liked by us. The graphite heat exchanger has good corrosion resistance, the heat transfer surface is not easy to scale, and the heat transfer performance is excellent. However, graphite is prone to brittle cracking and has low bending and tensile strength, so it can only be used at low pressure. Graphite heat exchangers are expensive, bulky and not used much. It is mainly used for heat exchange of corrosive media such as hydrochloric acid, sulfuric acid, acetic acid and phosphoric acid, such as condensers for acetic acid and acetic anhydride. There are generally three reasons for the leakage of graphite heat exchangers. One, the problem may appear on the body of the phenolic graphite extruded tube. When the tube body is found to have cracks, roughness, blisters, etc., the problem can be determined. Due to the problems of these surface phenomena, the quality of the pipe body is poor, and under the effect of various external pressures during operation, the pipe body cannot be used normally, and the pipe body leaks.