7results about How to "Increase vaporization rate" patented technology

The invention belongs to the technical field of helium extraction, and particularly relates to a method for extracting high-purity helium from BOG (Boil Off Gas), which comprises the following steps: separating methane and nitrogen in BOG gas through a low-temperature crude extraction process to obtain crude helium; oxygen is added into the crude helium, then heating is performed, hydrogen and a small amount of methane in the crude helium react with the oxygen respectively under the action of a catalyst, the reacted gas is dried and adsorbed, and dehydrogenated crude helium is obtained; carrying out a low-temperature condensation process on the dehydrogenated crude helium to liquefy and remove nitrogen and a small amount of oxygen in the dehydrogenated crude helium to obtain refined helium; nitrogen and oxygen are removed from the refined helium through a low-temperature adsorption process to obtain high-purity helium, liquid nitrogen is adopted as a cold source in the low-temperature adsorption process, and when the liquid nitrogen is vaporized, the vaporized nitrogen is discharged through vacuumizing treatment. The pressure in the liquid nitrogen storage tank is smaller than 1 KPa, the vaporization rate of the liquid nitrogen is higher, more heat is absorbed, the adsorption efficiency of the second adsorber is improved, and consumption of the liquid nitrogen is reduced.

The invention provides an SNCR device and method, and belongs to the technical field of waste gas treatment.The SNCR device comprises an ammonia gas detector, a nitrogen oxide concentration analyzer and an ammonia water vaporizer, the ammonia water vaporizer comprises a straight pipe section, a top inlet is formed in the top of the straight pipe section, the top inlet is connected with an ammonia water liquid inlet device, and a middle inlet is formed in the middle of the straight pipe section; the middle inlet is connected with a steam inlet device, the bottom of the straight pipe section is provided with a necking section, the bottom of the necking section is provided with a throat part, the bottom of the throat part is provided with a flaring section, the bottom of the flaring section is provided with a bottom outlet, and the bottom outlet is connected with a steam outlet device; according to the invention, the concentration of nitrogen oxide and the concentration of ammonia escape can be adjusted in real time, steam and ammonia water are fully atomized and gasified, and then are rotationally sprayed into flue gas, so that the denitration efficiency is greatly improved, the denitration ammonia consumption and the ammonia escape are reduced, and the denitration reaction temperature interval can be reduced to 750-1100 DEG C.

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.

The utility model discloses a coil pipe box type heating furnace which comprises a furnace body, a furnace pipe is arranged in a radiation section of the furnace body, the furnace pipe is of a spiral coiled structure, and the pipe diameter of the furnace pipe is enlarged many times through a connector in the oil flowing direction. Therefore, the vaporization rate of oil is improved, the heating amplitude of the wall of the furnace tube is reduced, the flow velocity of the oil is improved, and the coking rate of the oil is reduced.

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.

The present invention discloses a heating tube for soil remediation, which relates to the technical field of heating tubes, and comprises an inner tube, the outer side of the inner tube is fixedly connected with an outer tube, the outer tube is slidably sleeved on the outer side of a movable inner sleeve b, two symmetrically arranged adjustment and positioning components are connected between the movable inner sleeve b and the outer tube, the inner side wall of the movable inner sleeve b is fixed with the same movable inner sleeve a through multiple connecting rods, the movable inner sleeve a is movably sleeved on the outer side of the inner tube, and multiple air outlet holes a are provided on the movable inner sleeve a. The present invention utilizes a wind transmission component, and drives the wind wheel to rotate through external wind force, so that the rotating inner tube drives the rotating outer tube to rotate on the support rod through multiple key bars, and then the rotating outer tube drives multiple stirring rods to rotate, so that the liquid medicine entering the liquid storage cylinder can be stirred, and the liquid medicine can be heated evenly and quickly vaporized and rise in coordination with the action of multiple electric heating tubes.

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.