2 results about "Potassium product" patented technology

The present application relates to yellow phosphorus chemical technology field, specifically to a kind of yellow phosphorus tail gas heat carrier concentrated potassium formate solution preparation solid potassium formate process, first potassium formate solution is sent into heating pot, then yellow phosphorus tail gas is used as fuel to heat organic heat carrier, and high-temperature heat carrier is transported to the coil in heating pot by closed circuit circulation mode, and the solution is indirectly heated and concentrated;Concentrated liquid is transported to the surface of rotary cooling drum again, and is cooled and crystallized at the surface temperature of 20 DEG C-50 DEG C, forms the crystalline layer of predetermined thickness, finally is scraped down by scraper device, and solid potassium formate product is obtained.By using yellow phosphorus tail gas as heat source, waste is treated with waste and energy recovery is realized;Through organic heat carrier closed circuit circulation and accurate temperature control, the problems of high energy consumption and high cost of traditional electric heating process are solved, and the inconvenience of traditional water agent product storage and transportation is effectively overcome.

A kind of low potassium content of quantitative control of potassium content and its cultivation method and cultivation system, the method is: two sets of high concentration mother liquor of conventional potassium content and no potassium are prepared, after dilution, potassium-containing nutrient solution is continuously supplied in the early stage of plant growth;When the fresh weight of the whole plant reaches the potassium threshold value calculated from the target fresh sample potassium content, conventional lettuce potassium content and aboveground fresh weight, accurately switch to no potassium nutrient solution until harvest;At the same time, replace potassium salt with equimolar sodium salt / calcium salt to maintain conductivity and ion balance during the no potassium stage, fine control with 1.3-1.5 mS / cm EC and 5.5-6.5 pH, ensure root health and yield quality.The system does not require special light source or temperature control facilities, suitable for deep liquid flow, shallow liquid flow and aeroponic multiple soilless platform lettuce production, batch stable to achieve 100±10 mg / 100 g (fresh sample) of low potassium product, with the advantages of simple operation, strong repeatability and high industrialization promotion value.