What valves do paper mills use

The paper production process of paper mill is divided into pulping and papermaking.Pulping process is the raw materials containing rich fibers such as this material through the process of preparing, cooking, washing, screening, bleaching and other processes can be made into papermaking pulp papermaking process will be sent by the pulp department through the pulp, flow, press, drying, roll up and other processes after the production of finished paper.In addition, the alkali recovery department recycles the lye in the black liquor after pulping for reuse.Waste water treatment department is to treat the waste water after papermaking, so that it meets the relevant discharge standards of the state.The paper production of each process, there is no valve control.So what valves do paper mills need in these processes?

For the papermaking industry, in the production of the main media are: slurry, steam, water, sewage and black liquor and so on these media, in addition to the bleaching section of the pulp contains a small amount of chloride ions, washing and screening and alkali recovery department of the black liquor contains alkali, other media with little corrosion.In the whole production process, the above medium in the pipeline, the pressure of the container is generally not more than 1.6MPa.The steam temperature in all media is the highest, for 1.6MPa steam, its saturation temperature is 203℃.

From the above analysis of the performance of the medium, it can be seen that the valve used for the medium control in production does not need to specifically consider such factors as high temperature resistance, high pressure, strong corrosion resistance, explosion resistance, etc., and complex situations such as liquid flash, blocking and noise caused by high pressure difference can be omitted in the selection and calculation.

So the paper mill valve mainly has: butterfly valve, gate valve, check valve, reducing valve, steam trap valve, emergency cut-off valve, exhaust valve, globe valve, throttle valve, ball valve, balance valve.

Note: the above is just for you to list the common valve used in paper mill, which process to use which kinds of valves, need according to the working condition analysis, if you have a paper mill in valve selection of confusion, as DE valve can contact online customer service, we according to your condition to make you fit your working condition of the valve and provide reliable guarantee for your production.