The Pulp & Paper industry is an important part of the basic industry of the national economy. Its core value lies in ensuring the stability, efficiency of the production process and the qualification of product quality through accurate measurement of flow parameters of various pulps, slurries and auxiliary media, while providing reliable data basis for raw material consumption accounting and production process optimization. In terms of medium characteristics, the covered medium types mainly include wood pulp, straw pulp, waste paper pulp, paper stock slurry, coating slurry, white water, black liquor, etc. Such media are mostly high-viscosity suspensions, containing a large number of solid particles such as fibers and fillers. Some media (such as black liquor) have strong corrosiveness and high-temperature characteristics, with a large viscosity fluctuation range, putting forward strict requirements for the wear resistance, anti-clogging, corrosion resistance and measurement stability of flow measurement equipment.
The relevant factory types or unit types covered by this industry focus on the entire industrial chain of pulp and paper, mainly including pulp mills, paper mills, paper product processing and other fields. Different types of factories and units have significantly differentiated demands for flow measurement equipment due to differences in production processes (such as pulping, papermaking, coating) and medium characteristics (such as slurry concentration, viscosity, corrosiveness). In terms of commonly used flow equipment, the mainstream equipment includes Coriolis mass flowmeters (suitable for high-viscosity, high-concentration slurries and corrosive media, such as coating slurries and black liquor, which can accurately measure mass flow without being affected by medium viscosity and density fluctuations), electromagnetic flowmeters (suitable for conductive media such as low-concentration slurries and white water), vortex flowmeters (suitable for auxiliary media such as steam and clean water), etc.; supporting valves include wear-resistant butterfly valves, gate valves, ball valves, etc. These valves and flowmeters need to have the characteristics of slurry wear resistance and corrosion resistance. Their combined use can achieve precise control and regulation of the flow of various media, ensuring the smooth operation of the production process and stable product quality. In addition, with the advancement of the application of intelligent manufacturing in the paper industry, intelligent flow measurement equipment with real-time data transmission, fault early warning and remote monitoring functions has gradually become popular, further improving the industry’s automated production level and cost control capabilities.