摘要：【中文】本发明涉及一种分离和纯化沸点差小的组分的混合物的方法，并提供一种用于以高纯度和高产率回收期望产物同时使能量回收量最大化的方法。 【EN】The present invention relates to a method for separating and purifying a mixture of components having small difference in boiling points, and provides a method for recovering a desired product with high purity and high yield while maximizing the amount of energy recovered.

摘要：【中文】本发明公开了一种尿素装置副产热水工艺技术，包括以下步骤，S1：含氨工艺冷凝液在解析塔内要用蒸汽加热到140℃，得到高浓度氨水，S2：解析废液降低到128℃后，送入一段蒸发器和精馏塔进行蒸汽加热，S3：将经过简单处理后的井水，由第一加热器下端进入加热器管程，125℃解析废液由第一加热器上部进入加热器壳程，冷、热流逆流换热，出第一加热器的70℃井水进入第二加热器的管程，精馏塔和一段蒸发器来的130℃蒸汽冷凝液进入第二加热器的壳程。经过再次换热后，井水由70℃升高到90℃后进入热水储槽储存。本发明不影响原尿素装置的正常运行，不增加原尿素装置的能量消耗，副产热水设备的开、停以及产量的高低不影响尿素装置的操作和工艺控制。 【EN】The invention discloses a process technology for producing hot water as a by-product of a urea device, which comprises the following steps of S1: heating the ammonia-containing process condensate to 140 ℃ in an analytical tower by using steam to obtain high-concentration ammonia water, wherein the ammonia-containing process condensate comprises the following steps of S2: and (3) after the desorption waste liquid is reduced to 128 ℃, sending the desorption waste liquid into a first-stage evaporator and a rectifying tower for steam heating, and carrying out S3: well water after simple treatment enters a heater tube side from the lower end of a first heater, 125 ℃ analytic waste liquid enters a heater shell side from the upper part of the first heater, cold and heat flow countercurrent heat exchange is carried out, the well water with the temperature of 70 ℃ which is discharged from the first heater enters a tube side of a second heater, and 130 ℃ steam condensate from a rectifying tower and a section of evaporator enters the shell side of the second heater. After heat exchange is carried out again, the well water is heated from 70 ℃ to 90 ℃ and then enters a hot water storage tank for storage. The invention does not affect the normal operation of the prior urea device, does not increase the energy consumption of the prior urea device, and does not affect the operation and the process control of the urea device by starting, stopping and the yield of the by-product hot water equipment.