摘要：【中文】本发明公开了一种低硝卤状态下的盐硝联产生产工艺，属于盐硝联产领域，低硝卤状态下的盐硝联产生产工艺包括以下步骤：1)以氯化钠和硫酸钠的溶液为原料，原料经过加工后得到氯化钠和高温制盐母液；2)高温制盐母液与高温制硝母液一起经过加工后得到氯化钠和低温制盐母液，低温制盐母液用该高温制盐母液与高温制硝母液闪蒸二次蒸汽加压蒸汽换热后分离获得硫酸钠与高温制硝母液；3)高温制硝母液进入下一轮制盐工序的循环。本发明公开的一种低硝卤状态下的盐硝联产生产工艺，在低硝卤状态下的进行盐硝联产运行，控制盐硝联产系统的参数，保证了生产过程中的产品质量，降低了生产成本。 【EN】The invention discloses a salt and nitrate co-production process under a low-nitrate halogen state, which belongs to the field of salt and nitrate co-production, and comprises the following steps: 1) the method comprises the following steps of (1) processing a solution of sodium chloride and sodium sulfate serving as a raw material to obtain sodium chloride and a high-temperature salt production mother solution; 2) processing the high-temperature salt making mother liquor and the high-temperature saltpeter making mother liquor together to obtain sodium chloride and low-temperature salt making mother liquor, carrying out flash evaporation secondary steam pressure steam heat exchange on the low-temperature salt making mother liquor and the high-temperature saltpeter making mother liquor, and separating to obtain sodium sulfate and the high-temperature saltpeter making mother liquor; 3) and (5) the high-temperature nitrate making mother liquor enters the next cycle of salt making procedure. According to the salt and nitrate co-production process under the low-nitrate halogen state, the salt and nitrate co-production operation is carried out under the low-nitrate halogen state, the parameters of a salt and nitrate co-production system are controlled, the product quality in the production process is ensured, and the production cost is reduced.

摘要：【中文】本发明公开了一种确定协作体系桥合龙段位置的方法，属于桥梁设计技术领域，包括以下步骤：建立全桥有限元计算模型，确定合理的成桥状态；初步设定合龙段位于边吊索外侧，基于无应力状态量施工控制理论，通过有限元计算得到合龙段悬吊端的梁端竖向位移δ_s；若δ_s在设定的区间范围内，则认定初步设定的合龙段位置基本合理；若δ_s不在设定的区间范围内，以斜拉段和悬吊段的重叠区段为区间，采用二分法，重新设定合龙段的位置，并更新全桥有限元计算模型，重新计算合龙段两端的梁端竖向位移δ_s，直至δ_s满足在设定的区间范围内。本发明能够计算最佳的合龙位置，可快速计算确定合龙段的位置和合龙方案，可操作性强，缩短计算周期，提高设计效率。 【EN】The invention discloses a method for determining the position of a bridge closure section of a collaboration system, which belongs to the technical field of bridge design and comprises the following steps: establishing a full-bridge finite element calculation model, and determining a reasonable bridge forming state; preliminarily setting the closure section to be positioned on the outer side of the side sling, and obtaining the beam end vertical displacement delta of the suspension end of the closure section through finite element calculation based on the stress-free state quantity construction control theory_s(ii) a If delta_sWithin the set interval range, the preliminarily set closure section position is determined to be basically reasonable; if delta_sIf the beam end vertical displacement delta is not in the set interval range, the overlapped section of the cable-stayed section and the suspension section is taken as an interval, the bisection method is adopted, the position of the closure section is reset, the full-bridge finite element calculation model is updated, and the beam end vertical displacement delta at the two ends of the closure section is recalculated_sUp to delta_sThe requirement is in the range of the set interval. The invention can calculate the optimal closure position and can quickly calculate and determine the position of the closure sectionAnd the closure scheme has strong operability, shortens the calculation period and improves the design efficiency.