Corrosion resistant chemical centrifugal pump according to process flow and selection of water supply and drainage requirements?

Corrosion resistant chemical centrifugal pump is characterized by high temperature resistant, acid and alkali resistance, corrosion resistance, and corrosion resistant chemical centrifugal pump selection basis, should be in accordance with the requirements of process flow and water supply and drainage and other aspects into consideration, both liquid throughput, gear head, nature, piping layout and operation conditions of operation.

        1. Traffic is one of the important performance data of selected pump, it is directly related to the entire plant production capacity and transmission capacity. Such as design process design can calculate a normal, minimum, maximum three flow pump. Choosing pump, based on maximum flow, normal flow, give attention to two or morethings when there is no maximum flow, usually desirable to normal flow rate of 1. 1 times as the maximum flow.

        2. System is required to lift is another important performance data of pump, general use - 5% Head to selection after 10% allowance.

        3. Liquid properties, including the name of the liquid medium, physical properties, chemical properties and other properties, physical properties with temperature density d, c u viscosity, solid particle diameter and gas content in the medium, etc. , this is related to the system of the head, effective computing cavitation allowance and appropriate pump type: chemical properties, mainly refers to the chemical corrosion resistance and toxicity of liquid medium, is what kind of shaft seal material selection and the selection of pump type of important basis.

        4. Device system piping layout condition refers to send liquid height conveying liquid from liquid, such as absorption side the lowest level, such as the highest level of discharge side length, some data and piping specifications and materials, pipe specification, quantity, etc. , comb for department head and NPSH checking calculation.

        5. Operating conditions of a lot of content, such as the operation of the liquid saturated steam force T P, suction side pressure PS ( Absolute) , discharge side pressure container PZ, altitude, the environment temperature is clearance or continuous operation, the position of the pump is fixed or movable.

corrosion-resistant chemical centrifugal pump selection principle

1, the type and properties of the selected pump unit flow, lift, pressure, temperature, NPSH, the requirement of the process parameters such as suction.

2, must meet the requirements of dielectric properties.

of transporting flammable, explosive or toxic or valuable medium pump, require no leakage of water pump shaft sealing is reliable or adopted; On the pump for the transmission of corrosive media, convection components with corrosion resistance materials. Requirements for conveying pump containing solid medium, the convection part adopts wear-resisting material, use clean liquid wash shaft seal when necessary.

3, mechanical aspects of high reliability, low noise, small vibration.

4, economically to comprehensively consider the equipment cost, operation cost, maintenance costs and management fees, the lowest total cost.

5, centrifugal pump with high speed, small volume, light weight, high efficiency, large flow, simple structure, infusion without pulsation, stable performance, easy operation and maintenance is convenient wait for a characteristic.

corrosion-resistant chemical centrifugal pump selection considerations

1, the need to understand the media features, understand its corrosion resistance, temperature, viscosity, liquidity, density, granularity, etc. , know the parameters, to ensure the accuracy of the model selection, to ensure no corrosion to corrosion resistance after centrifugal pump.

2, need to understand the status of parameter and working condition, understand how to use, pump is used in what position, medium from where to where, how much pressure, suction flow rate, and the influence of flow change on the condition, the cavitation performance, and so on. Only know these parameters, can more accurately choose the pump type.

3, understand the capacity change on the application of the pump should be in the future. Many people only consider the current situation, and did not consider capacity after the change, the water pump is applicable, all need to consider.

4, taking into account the pump energy saving, the selection should refer to the efficiency of the pump manufacturer, when many people only consider whether or not the pump cheap, chemical pump cost, actually buy pump costs account for only 1/5, mostly maintenance and electricity cost.

5, the general performance of maintenance convenience and accessories: many chemical enterprise users in at the beginning of corrosion-resistant centrifugal pump selection when purchasing, covet is cheap, tend to choose the lowest price of the anti-corrosive pump manufacturer, you know, cheap goods is not good this sentence really exist, the cost of the pump is embodied in: design, manufacture, mould, materials, labor, technology, materials and artificial, not just if there is a manufacturer of corrosion-resistant pumps offer very low, so can only say that the manufacturers in the production of pump, only the material and labor costs. Other are not produce cost, it is conceivable that the quality of the pump.

At the same time, as the recent research of JT shows, the benefits of improved productivity and firm performance can make implementing basic management practices worth it.
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