Application cases of heat exchangers in the industrial field
Type B uses the national standard GB7148-81 and the international ISO7150/1-1948 standard salicylic acid photometric method as the basic test means, supplemented by sample colorimetric reaction pretreatment, to achieve rapid and accurate colorimetric determination of samples, with stable,SensitiveReliable and mercury-free.
In the chemical industry, heat exchangers are widely used in processes such as heating, cooling, distillation, and evaporation. Taking the petrochemical industry as an example, heat exchangers in refineries play a crucial role. During the refining process, crude oil undergoes a series of heating and cooling processes to obtain various products, such as gasoline and diesel. These heating and cooling processes rely on the support of heat exchangers.
Heat exchangers in refineries typically adopt a shell-and-tube design, using pipes to exchange heat between high-temperature crude oil or chemical media and cooling media to achieve temperature regulation. This equipment not only enables efficient energy transfer but also ensures temperature control and energy utilization efficiency during the production process.
In addition to the refining industry, heat exchangers also have important applications in various industrial fields such as steel, pharmaceuticals, and food. By optimizing design and selecting suitable materials, heat exchangers can meet different process requirements and ensure the normal operation of industrial production.
Overall, heat exchangers play an indispensable role in the industrial sector, providing continuous and stable thermal energy support for various industries, driving the development and progress of industrial production.
Key words: heat exchange equipment
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Type of ammonia nitrogen analyzer
Ammonia nitrogen analyzer according to the different test standards, there are A, B type. Type A is GB7479-87 by Nessler' s reagent colorimetric method. Type B adopts the national standard GB7148-81 and the salicylic acid photometric method specified in the international ISO7150/1-1948 as the basic testing method, supplemented by the sample colorimetric reaction pretreatment, to realize the rapid and accurate colorimetric determination of the sample, which has the advantages of stability, sensitivity, reliability and mercury-free.
Operation steps of ammonia nitrogen analyzer
Pour distilled water or ultra-pure water into a cuvette (about 2/3 height); wipe the water marks and fingerprints on the outer wall with a non-falling paper towel or soft cloth, then put it into the measuring seat of the instrument and cover the shading cover.
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