For engineering purpose,some physical properties of ureasulfuric acid system with different ratio of urea and sulfuric acid,such as viscosity,mixing heat,phasetransition heat and temperature and specific heat were...For engineering purpose,some physical properties of ureasulfuric acid system with different ratio of urea and sulfuric acid,such as viscosity,mixing heat,phasetransition heat and temperature and specific heat were measured and discussed.The results indicated that,the viscosity of ureasulfuric acid system was greatly higher than sulfuric acid and urea,the heat effect in mixing process of sulfuric acid and urea less than dilution heat of sulfuric acid,the phase transition only existed for system with sulfuric acid and urea mole ratio 1∶10 and 1∶20,the specific heat of ureasulfuric acid system both in solid phase and liquid phase higher than sulfuric acid and urea.展开更多
The reform and utilizing of the L3.3-17/320 N 2 and H 2 compressor that will have been fallen into disuse in the small introgenous fertilizer plant is explored and researched in this paper. The principle of actualizin...The reform and utilizing of the L3.3-17/320 N 2 and H 2 compressor that will have been fallen into disuse in the small introgenous fertilizer plant is explored and researched in this paper. The principle of actualizing reform for the compressor is brought forward. The various doable reform blue print is presented. Based on many the thermal and dynamic calculation, the way of actualizing reform for the compressor is explained through a reform example.展开更多
文摘For engineering purpose,some physical properties of ureasulfuric acid system with different ratio of urea and sulfuric acid,such as viscosity,mixing heat,phasetransition heat and temperature and specific heat were measured and discussed.The results indicated that,the viscosity of ureasulfuric acid system was greatly higher than sulfuric acid and urea,the heat effect in mixing process of sulfuric acid and urea less than dilution heat of sulfuric acid,the phase transition only existed for system with sulfuric acid and urea mole ratio 1∶10 and 1∶20,the specific heat of ureasulfuric acid system both in solid phase and liquid phase higher than sulfuric acid and urea.
文摘The reform and utilizing of the L3.3-17/320 N 2 and H 2 compressor that will have been fallen into disuse in the small introgenous fertilizer plant is explored and researched in this paper. The principle of actualizing reform for the compressor is brought forward. The various doable reform blue print is presented. Based on many the thermal and dynamic calculation, the way of actualizing reform for the compressor is explained through a reform example.
