6 results about "Vaporization" patented technology

The invention discloses a coproduction method of 1, 2-propanediamine and dimethyl piperazine, which comprises the following steps of: mixing ammonia and isopropanol amine, pre-heating for vaporization, filling steam into a fixed-bed reactor, performing reaction in the presence of a catalyst for condensation and amination and under conditions with the pressure of 1.0MPa to 4.0MPa, the temperature of 300 DEG C to 350 DEG C and the contact time of 1.0-3.0s to obtain product stream of 1, 2-propanediamine, 2, 5-dimethyl piperazine, 2, 6-dimethyl piperazine, unreacted ammonia and unreacted isopropanol amine, and distilling the product stream for separation to obtain the 1, 2-propanediamine, 2, 5-dimethyl piperazine and 2, 6-dimethyl piperazine; wherein the weight ratio of the ammonia and the isopropanol amin is (10-16):1, and the catalyst for condensation and amination comprises the following ingredients by weight percentage: 97-99 percent of HZSM-5 (H-type zeolite sieve of molecular porosity 5) zeolite and 1-3 percent of phosphorus. The coproduction method is mainly applied in preparation of the 1, 2-propanediamine and the dimethyl piperazine.

A device for sublimating a chemical that has a boiling point that is lower than the combustion temperature of a substance containing the chemical comprising a vaporization tube, a mouthpiece stem, a holder and a heating device.

The invention discloses a preparation method for micron-size carbonyl iron and nickel alloy powder. The preparation method for the micron-size carbonyl iron and nickel alloy powder comprises the following steps that A1, Ni(co)4 is subjected to high-pressure synthesis; A2, Fe(co)5 is subjected to high-pressure synthesis; A3, Ni(co)4 is subjected to evaporation and vaporization, and a liquid Ni(co)4 compound prepared through reacting is guided into a first vaporizer at the constant speed, heated and vaporized; A4, Fe(co)5 is subjected to evaporation and vaporization, and a liquid Ni(co)5 compound prepared through reacting is guided into a second vaporizer at the constant speed, heated and vaporized; A5, premixing is conducted, specifically, vaporized Fe(co)5, Ni(co)4 vapor and ammonia gas together enter a pre-mixer through carrier tape, the ratio of iron to nickel is adjusted, and the mixed gas in the pre-mixer is guided into a thermal decomposition furnace to be subjected to thermal decomposition and alloying; and A6, gas-solid separation is conducted, and the iron-nickel alloy powder is obtained. According to the preparation method for the micron-size carbonyl iron and nickel alloy powder, operation is easy, quantity production is easy to achieve, and the cost is low; and the prepared iron-nickel alloy powder has the advantages of being uniform in iron and nickel distribution, good in pressing performance and sintering performance and the like and has excellent comprehensive mechanical performance, and the tool service life is prolonged by 10%-20%.

A vaporization latent heat energy reuse system of a liquefied natural gas boat comprises a spiral gas channel. The spiral gas channel is arranged on the outer wall of a natural gas pressure reducing valve, an outlet of the spiral gas channel is communicated with a device needing cooling, and an inlet of the spiral gas channel is communicated with external air. The reuse system is simple in structure and low in manufacturing cost, the use ratio of latent heat energy of vaporization of liquefied natural gas is high, air resistance is increased by the spiral gas channel on the outer wall of the natural gas pressure reducing valve, gas-solid heat exchange coefficient is improved, the latent heat energy of vaporization of the liquefied natural gas is more efficiently used, so that a cabin is energy-saving and environment-friendly, the cabin temperature can be reduced as low-temperature air is led into the cabin, goods and materials can be kept fresh as the low-temperature air is led into a storage warehouse, energy consumption of a refrigerator carried by the boat is reduced, the low-temperature air is led into the cabin and can assist an air conditioner in cooling in hot weather, and the power and energy consumption of the air conditioner can be reduced.