Showing papers on "Sodium chlorate published in 1989"
Patent•
12 Jun 1989
TL;DR: In this article, a process for controlling biomass and cleaning water injection wells and oil producing wells by injecting an oxidant into the pumped water injection stream is described, where the oxidant is either injected by means of a stinger, a spool or a coiled tube into the injected water in the well.
Abstract: A process for controlling biomass and cleaning water injection wells and oil producing wells by injecting an oxidant into the pumped water injection stream. Chlorine dioxide or sodium chlorite, depending on the reactants present in the well, may be injected by means of a stinger, a spool or a coiled tube into the pumped water injection stream. Chlorine dioxide is generated at the site and may be generated by any one of several known processes. Hydrochloric acid or other proton donor stream, a water stream, and a stream containing sodium chlorate, sodium chlorite, and optional sodium chloride may be mixed at an elevated pressure to create chlorine dioxide. The elevated pressure of the chlorine dioxide stream is maintained at or boosted to a level greater than the pressure of the water injection or oil-producing well to aid in the injection of the chlorine dioxide stream either from generation to the well or through a booster pump mechanism to the well. Elevated pressure is maintained during application at a level to maintain the chlorine dioxide in solution.
29 citations
TL;DR: In this article, it was found that the sharp intersection of the isopiestic curves does not occur when the zeolite crystals are so small that sorption of the salt on the external surface of the Zeolite is substantial.
Abstract: Factors affecting the reliability of the isopiestic method for the measurement o the imbibition of salts from aqueous solution by zeolites have been examined. It has been found that the sharp intersection of the isopiestic curves, which is essential to the accuracy of the method, does not occur when the zeolite crystals are so small that sorption of the salt on the external surface of the zeolite is substantial. Results for the occlusion of sodium nitrate by zeolite Na–X (ca. 6 µm crystals) and Na–Y (ca. 7 µm crystals) at 298.2, 313.2 and 328.2 K are reported. Those for sodium nitrate and sodium chlorate at 298.2 K are used to test the applicability of the Donnan equation.
5 citations
Patent•
23 Aug 1989
TL;DR: In this article, the authors present a list of heavy metal and odor removal methods for removing heavy metal, which includes: sodium carbonate 5-15 wt., sodium phosphate 1.5-4.5 wt.
Abstract: Compsn. for removing heavy metal and odor comprises sodium carbonate 5-15 wt.%, sodium phosphate 1.5-4.5 wt.%, aluminum sulfate 5-15 wt.%, ferrous sulfate 30-45 wt.%, zeolite 15-25 wt.%, Na2 EDTA 5-15 wt.%, acid clay 5-15 wt.%, sodium sulfite 5-15 wt.%, alon flock 1.5-2.5 wt.% and sodium chlorate (or hyperchlorite) 0.5-1.5 wt.%.
1 citations
Dissertation•
01 Jan 1989
1 citations
Patent•
18 Apr 1989
TL;DR: In this article, a continuous process for the manufacture of potassium chlorate by coupling with a plant for the production of sodium chlorate via electrolysis is described, in which a concentrated solution of potassium chloride is added to said liquid, precipitation is caused by any known means, the said chlorate is separated off and the mother liquor from crystallization of the said potassium chlorite is recycled into the said purification loop (2--2', 3) of the sodium chloride production plant.
Abstract: The present invention relates to a continuous process for the manufacture of potassium chlorate by coupling with a plant for the production of sodium chlorate by electrolysis, the said plant comprising a source of NaCl solution, (1), a loop for purification of the said solution (2--2', 3), an electrolysis device (4), a storage tank (5), if appropriate, and a crystallizer (6) in which the crystallization and the separation of NaClO 3 crystals are preferably carried out, wherein circulating liquid is removed downstream of the said electrolysis device (4), a concentrated solution of potassium chloride is added to said liquid, precipitation (11) of the potassium chlorate is caused by any known means, the said potassium chlorate is separated off and the mother liquor from crystallization of the said potassium chlorate is recycled into the said purification loop (2--2', 3) of the sodium chlorate production plant.
1 citations