为筛选出适用于天然气高盐泡排水的消泡剂,实验从2个单因素(消泡剂种类、消泡剂添加量)出发,对9种消泡剂在不同状态(常温、热态、蒸馏)下的作用效果进行测试.通过泡沫高度、消泡率等指标对消泡剂进行评价,最终确定H消泡剂在0.5%的添加量时为本实验样品的可行性消泡剂.本研究对水处理技术与消泡剂结合使用在未来处理天然气高盐泡排水领域提供了一定的依据.
作为定向钻进水平连通井组,须探明盐矿层顶板及其上下标志层的地层情况,以便与先期完钻的直井进行层位对比.该盐矿拟采用定向水平井连通法进行水溶开采,为提高定向水平井的"中靶"概率,釆用精准定位技术实现一次"中靶"连通,使该井组迅速投入生产,确保了采区先期施工井组满足采输卤装置区的总产量要求.
针对国家盐业体制改革后,国内市场竞争进入白热化阶段,纷争不断,盐行业大型化、集团化的产业垄断形态尚未形成,体制改革效果还未显现的情况,本文以我国盐业发展历程及体制改革作为切入点,通过世界上其他国家盐业管理模式的借鉴和启示,对我国盐业体制改革走向和发展趋势进行探索.
为了提高矿区盐岩资源的回采率,最大限度的开采地下盐岩矿藏,在采卤老矿区"填缝补齐"布井,利用原有采卤井场改建定向对接连通生产卤井.老采区存在地下裂隙、溶腔发育等异常复杂的地下地质状况,钻完井施工中极易发生井漏、卡钻等复杂情况.本文对以上重难点问题及解决办法进行了介绍,包括井眼轨迹设计及井漏失返、冒落掉块等内容,有助于技术工作者加深对采卤矿区地层的认识,从而提高处理问题的应急能力.
In this paper, the preparation of lithium carbonate by anti-solvent crystallization with the simulated brine of 3 wt%lithium chloride solution, sodium carbonate solution as precipitant and acetone as anti-solvent. The effects of sodium carbonate concentration, acetone dosage and temperature on product yield were investigated. The experimental results show that the product yield can be improved by increasing the sodium carbonate solution concentration, the acetone dosage and the temperature, but the high concentration of sodium carbonate may reduce the product purity. Under the conditions of the sodium carbonate solution of 16.7 wt%,the volume ratio of 1:1:1 of acetone, lithium chloride and sodium carbonate solution, and the temperature of 40 ℃, the product yields of lithium carbonate can reach 83.3%, and the product morphology is rod-like. This study provides a novel way for extracting lithium salt from low lithium brine.
