Strengthening the two-wheel drive of management and technological advancement is the most important guarantee for achieving water-saving and emission reduction in the Maoming Petrochemical Refining Division. In 2005, the Ministry of processing consumed 1.24 tons of fresh water per ton of crude oil, and from January to October this year, the consumption index fell to 0.62 tons. Calculated with 10.85 million tons of crude oil processed in the same period, the total accumulated fresh water savings of more than 8 million tons, emission reduction wastewater More than 5 million tons, equivalent to saving the water of a medium-sized reservoir.
In the past, due to the fact that water resources were not valued and managed extensively, Maoming Petrochemical's consumption of fresh water per ton of oil was once as high as 1.29 tons, which was not only far from the international advanced level of 0.5 tons, but also higher than the average level of Sinopec of 1.02 tons. Both cause waste of water resources and increase production costs. To this end, the oil refining sub-sector has used water conservation reduction as a breakthrough for the construction of conservation-oriented enterprises, and on the basis of understanding the potential for water conservation, it has determined the water saving goal of reducing the consumption of fresh water for processing tons of crude oil to 0.6 tons and implementing it. Three water-saving measures were adopted, namely, detailed water management, plugging of water leaks, and implementation of technical reforms to save water.
Sodium Tripolyphosphate, Na5P3O10, Molecular weight 367.86, white powder; Melting point 622 °C. free soluble in water, aqueous solution appears ACID. It has got salient chelating capacity to metal ions of Ca and Mg etc. and can soften hard water to make suspension into solution, alkalinity, without causticity. It is an inorganic compound with formula Na5P3O10, is the sodium salt of the polyphosphate penta-anion, which is the conjugate base of triphosphoric acid.Sodium tripolyphosphate is produced by heating stoichiometric mixture of disodium phosphate, Na2HPO4, and monosodium phosphate, NaH2PO4, under carefully controlled conditions.
It has different bulk density, i.e. low density 0.35-0.6g/cm 3 , medium density 0.6-0.8g/cm3 and high density 0.8-1.0g/cm3. This product has two crystalline forms, namely phase I (high temperature phase) and phase II (low temperature phase). The chemical properties of the two phases are the same, and the difference between them lies in the thermostability, hygroscopicity, solubility and hydration heat when dissolving.
It can be used as one of the main auxiliaries for synthetic Detergent, synergist for soap; water softener, tanning agent for leather making, auxiliary for dyeing; As an effective dispersion agent for suspensions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud etc.
As an oil contamination resistance agent in paper production; As in foodstuff industry it is used as quality improver in the process of canned food, fruit juice drinks, foodstuffs from milk or soybeans. It may tender the meat in canned ham and soften the skin of horse bean in canned horse bean. It may also serves as a softener or densifier in foodstuff industry.
Sodium Tripolyphosphate,Stpp Food Grade,Washing Powder Stpp,Detergents Preservatives
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