首页>
外国专利>
METHOD OF OBTAINMENT OF SODIUM BICARBONATE AND CARBONIZATION COLUMN FOR ITS REALIZATION
METHOD OF OBTAINMENT OF SODIUM BICARBONATE AND CARBONIZATION COLUMN FOR ITS REALIZATION
展开▼
机译:获得碳酸氢钠和碳化塔的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
FIELD: chemistry.;SUBSTANCE: method of producing sodium bicarbonate in a carbonating column, consisting of absorption and cooling barrels which form absorption and cooling zones, respectively, involves saturation of ammoniated and partially carbonated brine with a carbonating gas, further crystallisation of sodium bicarbonate and cooling the obtained suspension. The carbonating gas is fed in a counter current into the ammoniated and partially carbonated brine. Carbonating gas is fed into the absorption zone with volume concentration CO2 32-45% in amount of 9050-9200 m3/h, and into the cooling zone with volume concentration CO2 75-85% in amount of 7800-8200 m3/h. The obtained suspension is cooled in the cooling zone formed by cooling and intermediate barrels and divided into two parts by a separating zone. The height of the bottom part of the cooling zone is 15-35% of the total length of the cooling zone.;EFFECT: invention enables to obtain a coarse-crystalline residue of sodium bicarbonate with low residual moisture content during filtration, and increase efficiency of the column.;4 cl, 1 dwg, 1 tbl, 1 ex
展开▼
机译:领域:化学物质:在碳酸化塔中生产碳酸氢钠的方法,该方法由分别形成吸收区和冷却区的吸收桶和冷却桶组成,涉及用碳酸化气体将氨化和部分碳酸盐化的盐水饱和,使碳酸氢钠进一步结晶并冷却获得的悬浮液。将碳酸气以逆流进料到氨化并部分碳酸化的盐水中。碳酸气以9050-9200 m 3 Sup> / h的量进入CO 2 Sub> 32-45%体积浓度的吸收区,并进入体积浓度为冷却区的冷却区。 CO 2 Sub> 75-85%,量为7800-8200 m 3 Sup> / h。将获得的悬浮液在由冷却桶和中间筒形成的冷却区域中冷却,并由分离区域分成两部分。冷却区底部的高度为冷却区总长度的15-35%。效果:本发明能够获得碳酸氢钠的粗晶体残留物,过滤过程中残留水分含量低,并提高了效率; 4 cl,1 dwg,1 tbl,1 ex
展开▼