Sodium chlorate

About: Sodium chlorate is a research topic. Over the lifetime, 791 publications have been published within this topic receiving 6844 citations.

Sodium chlorate reactor applied to comprehensive-method chlorine dioxide preparation system

Abstract: The invention discloses a sodium chlorate reactor applied to a comprehensive-method chlorine dioxide preparation system The sodium chlorate reactor comprises a reactor body (3), a C chamber barrel body (4) and a central tube (13), wherein the C chamber barrel body (4) is arranged in the reactor body to form an independent space C chamber (22), an internal space of the reactor body (3) is divided into an A chamber (20) and a B chamber (21) by a partition plate (18), the partition plate (18) is fixed to the upper portion of the inner wall of the reactor body (3), the lower end of the partition plate (18) is close to the bottom of the reactor body (3), and the central tube (13) is arranged in the middle of the top of the reactor body (3) and is communicated with the reactor body (3) By means of the structural design of the reactor, sufficient reaction time is provided for beginning reaction of an electrolytic cell, a weak sodium chlorate solution from a chlorine dioxide synthesis unit can be collected, and the weak sodium chlorate solution is mixed with an excessive sodium chlorate electrolyte solution to obtain a strong sodium chlorate electrolyte solution which is utilized as a raw material for producing chlorine dioxide

Method of dissolving concentrate of noble metals

Abstract: FIELD: metallurgy.SUBSTANCE: method relates to metallurgy of precious metals. Method involves pulverizing precious metal concentrate in dilute hydrochloric acid. Reaction mixture is heated at temperature of 80–100 °C for 30–60 minutes. Oxidizer is then introduced, which is by-product of refining production, saline solution containing sodium chlorate and sodium chloride.EFFECT: dissolution of noble metal concentrate without use of chlorine to obtain affinity salt of palladium with minimum content of impurities of platinum and its satellites.1 cl, 1 tbl, 1 ex

System and method for purifying depleted brine

Abstract: A system and method for removing impurities to reconstitute a NaCl stream to a saturated solution salt solution and remove any impurities such as sodium bisulfate (NaHSO3), sodium chlorate (NaClO3) and sodium iodide (NaI) to improve brine quality from an electrolytic cell is disclosed, including an evaporation system connected to the electrolytic cell, a brine treatment system connected to the evaporation system and the electrolytic cell. A waste treatment system is connected to the evaporation system. The evaporation system includes a set of evaporators that concentrates the brine. Sodium chloride is precipitated from the set of evaporators to the brine treatment system. Impurities are precipitated from the set of evaporators. The brine treatment system includes a hydrocyclone and a centrifuge that separates sodium chloride from water. The sodium chloride is mixed with water to create a concentrated and purified brine.

Effect of Absorbents on NOx Removal through Polyvinylidene Fluoride (PVDF) Hollow Fiber Membrane Modules

Abstract: NOx (NO and NO2) are air toxins that endanger life and represent a hazard to the environment, such as photochemical smog, global warming, acid rain, ozone depletion, and the occurrence of respiratory infections. Some technological strategies to diminish NOx emissions to meet regulations depend on two techniques: the dry process and the wet process. This study applies polyvinylidene fluoride (PVDF) hollow fiber membrane modules as a medium to remove NOx from solutions containing several absorbents such as hydrogen peroxide and nitric acid (H2O2-HNO3) solutions, sodium chlorite and sodium hydroxide (NaClO2-NaOH) solutions, and sodium chlorate and sodium hydroxide (NaClO3-NaOH) solutions. The experimental results showed that the oxidant’s strength influences NOx removal efficiency, where the absorbent solutions containing hydrogen peroxide had the highest removal efficiency as hydrogen peroxide is the most potent oxidant, followed by sodium chlorite and sodium chlorate. The three pairs of absorbents also gave a high NOx removal efficiency (above 90%), which means that all the absorbents used in the study are very potential to be used to diminish NOx via the wet process. NOx removal efficiency at the same feed gas flow rate increased as the number of fiber and absorbent concentrations is increased. However, NOx removal efficiency is reduced as the feed gas flow rate is increased at the same membrane module and absorbent concentration.