3results about How to "Increase vaporization rate" patented technology

The utility model relates to a chemical equipment field especially relates to a liquid nitrogen vaporization system. The utility model discloses a liquid nitrogen vaporization system including the liquid nitrogen tank for storing liquid nitrogen, its connection has liquid nitrogen output pipeline, and the first stage vaporizer for carrying out the first stage vaporization to liquid nitrogen and the second stage vaporizer for carrying out the second stage vaporization to liquid nitrogen are connected in proper order along liquid nitrogen output pipeline, and the second stage vaporizer is air vaporizer. Liquid nitrogen in liquid nitrogen tank flows along liquid nitrogen delivery pipeline, first flows through the first stage vaporizer and carries out the first stage vaporization, then flows through air vaporizer and carries out the second stage vaporization, and two stage vaporization improves the vaporization rate of liquid nitrogen.

This application provides a flash evaporation system for separating DMAC and acetic acid, connected between a feed tank and a distillation column. The system includes a high-pressure flash tank connected to the feed tank and a low-pressure flash tank connected in series with the high-pressure flash tank. Both the high-pressure and low-pressure flash tanks are provided with an inlet, a vapor phase outlet, and a liquid phase outlet. The liquid phase outlet of the high-pressure flash tank is connected to the inlet of the low-pressure flash tank via a pressure reducing valve, and the liquid phase outlet of the low-pressure flash tank is connected to the inlet of the distillation column. A preheater is connected between the outlet of the feed tank and the inlet of the high-pressure flash tank. The vapor phase outlets of both the high-pressure and low-pressure flash tanks are connected to a condenser. This flash evaporation system, by employing a series connection of a high-pressure and a low-pressure flash tank for two-stage pressure-reducing flash evaporation of the mixture, achieves efficient pre-separation, reduces the load on the distillation column, and improves overall separation efficiency.

This invention relates to the field of ammonia refining equipment technology, specifically a liquid ammonia vaporizer applied in an ammonia refining unit. It includes a preheating pipe, one end of which is connected to a liquid ammonia inlet, and the other end to a riser pipe. The riser pipe is connected to a distributor, and several injection holes are respectively opened on both sides of the bottom of the distributor. A crushing plate is fixedly installed on both sides of the riser pipe, and several crushing holes are opened on the surface of the crushing plate. In this structure, liquid ammonia first enters the preheating pipe through the liquid ammonia inlet, causing partial vaporization. The partially vaporized liquid ammonia enters the riser pipe, forming a gas-liquid two-phase flow, increasing the liquid ammonia flow rate for further vaporization. Driven by the gas phase, the liquid ammonia is ejected at high speed from the distributor onto the crushing plate. Under the action of the crushing holes, the liquid ammonia is broken into small droplets, which are further vaporized by the rising high-temperature crude ammonia gas, thus achieving a good liquid ammonia vaporization effect.