Heat exchanger heat transfer enhancement use

　Heat exchanger heat transfer enhancement use Turbulator

　　Heat exchanger in the heat transfer process, the heat exchanger heat transfer coefficient (K) factors include: heat exchanger, the flow state of the external liquid, theheat transfer surface of the shape and size and so on. In order to improve the heat transfer coefficient of the heat exchanger, to strengthen the efficiency of the heat exchanger heat transfer, at home and abroad a wide range of enhanced components and strengthen measures, including threaded pipe used in heat exchangers, pipestripes, diverging tube guide process long groove tube, the overall double-sidedspiral finned tubes, as well as to the enhanced heat transfer in the heat exchange tubes and spoiler sub.

　　Which, in the heat exchanger heat transfer tube and spoiler sub-additive forenhanced heat transfer has been used in industry for many years, it can make theheat exchanger the overall heat transfer coefficient significantly improved, can greatly reduce the heat exchanger heat transfer area and reduce the weight of equipment,saving a lot of metal materials, many of its advantages has been growing attention has been paid.

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• 　　Heat Exchanger Heat Transfer Effect

Prevent the Pressure Vessel Rupture

　In order to prevent the pressure vessel rupture accident occurred due tooverpressure, in addition to avoiding operational errors, and eliminate or reduce the objective factors that may cause the container overpressure safety relief valve must also be installed on the pressure vessel.

　　Safety relief valve safety relief valve to prevent container overpressure protectiondevice. The safety relief valve has the following features: When run in the normalworking pressure, the pressure vessel to maintain not leak tight, if the pressure inside the container exceeds specified, can automatically and rapidly excreted within themedia, so that the device the pressure is always maintained within the allowablerange of pressure. Safety relief valve can not only open the emissions exceeds a predetermined pressure, thereby reducing the pressure of the container, but alsoplayed the role of alarm.

　　

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• 　　Principle of the Pressure Vessel

The thickness of the pressure vessel problems

The thickness of the pressure vessel problems

　　To meet the stiffness requirements in the manufacturing, transportation and installation, the minimum wall thickness for corrosion allowance does not includeprovisions based on engineering experience.

　　Carbon steel and low alloy steel containers, the minimum wall thickness of not lessthan 3mm;

　　High-alloy steel pressure vessels (such as stainless steel containers), the minimum wall thickness of not less than 2mm.

　　When the cylinder the calculation of thickness less than the minimum thickness,minimum thickness shall be taken as the calculated thickness when the cylinder ofnominal thickness can be divided into two different scenarios were calculated.

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• 　　Pressure Vessels Boost Container

Note heat exchanger parts assembly

Note heat exchanger parts assembly and installation of equipment

　　When lifting to pay attention to the center of gravity of the equipment.

　　Adhesive gasket to the gasket groove of the heat exchanger, shall ensure that thegasket and plate gasket does not have sand, oil, iron, and flux and other debris, soas not to damage the seal, causing a leak.

　　Tighten the heat exchanger bolts, the force should be uniform, and continuouslymeasure the distance of the two compression plates inside to ensure the paralleldeviation between the two compression plates not more than 3MM, clamped to the required size, parallel deviation 1MM, so that the gasket pressure partial or slid off the gasket groove at the same time, while clamping side and inspected to observewhether there is a gasket, the plate dislocation and other phenomena.

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• 　　Parts of the plate heat exchanger assembly II

The Reactor Stirring Turbo Flat

The reaction kettle stirring the form of select blender is one of the key components of the reactor, the physical properties of different media within the reactor capacity,mixing the purpose to select the appropriate agitator, the promotion of the chemical reaction speed, improve production efficiency can play a greatrole.

　　The reactor stirring turbo flat folding blade turbines, leaf curl turbine agitator isgenerally adapted to the gas, liquid mixture of reaction, the stirrer revolutions generally should be selected more than 300r/min. Propelled mixer is generallyapplied in solid, liquid catalytic suspension reaction, it can be deposited on the tank bottom a large proportion of material (such as Ni catalyst) all stirred up andsuspended in a liquid, the stirrer diameter generally the diameter of the kettle body1/3, stirring wire-speed for 5-15m / s.

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• 　　Common symptoms and causes of reactor

The pressure vessel pressure test

The pressure vessel pressure test, pressure test can be selected for hydraulic and pneumatic.

　　Hydrostatic pressure testing of pressure vessels: the hydraulic test pressure shouldrise slowly to reach the required test pressure for 30 minutes, and then the pressure dropped to 80 percent of the required test pressure and maintain long enough for all the welds and joints to be checked. The experimental results with no leakage and no visible residual deformation is qualified.

　　A hydraulic experiment is not suitable for pressure vessels, such as due process requirements, not allowed to have minimal residual liquid in the container, or fluid-filled container due to structural reasons, are allowed to use air pressure experiment.Where a pressure experiment container weld the need for 100% nondestructive testing, and experimental places should be increased security measures, and underthe supervision of the security sector.

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• 　　The pressure vessel welded joints

Parts of the plate heat exchanger assembly

Parts of the plate heat exchanger assembly

　　Parts of the plate heat exchanger assembly factory parts to the use of units shipped,on-site assembly, or use the unit maintenance equipment to open the plate heat exchanger and then assembled, must be carried out in accordance with the following order:

　　Carefully read random file (certificate, card materials, flowcharts, assembly drawingsand packing list, etc.).

　　Check plate to take over, the gasket material is consistent with the medium in theheat exchanger corrosion resistance requirements.

　　Drawings check all parts are complete, model, size is consistent with the drawings.

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• 　　Highly Efficient Heat Exchanger