30results about How to "Easy and economical to operate" patented technology

The present invention provides a refrigeration door, and method for making the same, for controlling condensation, providing thermal insulation, with a desired amount of visible transmittance, without using electricity to heat the door. The energy-free refrigeration door of the present invention includes a door frame housing and an insulating glass unit comprising inner, middle and outer sheets of glass. A first sealant assembly disposed around the periphery of the inner and middle sheets of glass forms a first chamber between the inner and middle sheets of glass. A second sealant assembly disposed around the periphery of the middle and outer sheets of glass forms a second chamber between the middle and outer sheets of glass. A gas, such as krypton, air, or argon is held in the first and second chambers. The outer sheet of glass and inner sheet of glass each have an unexposed surface that faces the middle sheet of glass. A low emissivity coating is disposed on the unexposed surfaces of the inner and outer sheets of glass so that the glass door as a whole has a U value that prevents formation of condensation on the outer surface of the outer sheet of the glass door, without the application of electricity to heat the door, while also providing the desired evaporation rate of condensation from the inner side of the inner sheet of the glass door.

Process and apparatus for cooling free-flowing granulate is provided in which the granulate trickles from top to bottom by gravity in a fixed container with movable cooling surfaces attached internally.

The invention discloses a structure and a preparation method of a porphyrin compound containing a long chain alkyloxyphenyl group and a phenanthrene ring group. The above tetraphenanthroporphyrin derivative is generated from long chain alkyloxyaryl aldehyde and phenanthrene ring conjugated pyrrole through a one-step reaction under the catalysis of propionic acid under heating refluxing conditions. The preparation method has the advantages of simple reaction steps, short reaction time, good selectivity and high yield.

The invention discloses a pyridine fused norcorrole compound and a preparation method thereof. The pyridine fused norcorrole compound has a structural formula as shown in formula (1). The preparation method mainly comprises the following steps: weighing a certain amount of amido norcorrole and aromatic aldehyde, putting into a reactor, adding newly steamed toluene solution to the reactor, stirring at 110 DEG C for 5-8 h, and tracking the reaction by a chromatographic method; cooling to room temperature after the reaction is completed, separating directly with a chromatography column, eluting with methylene chloride and normal hexane as eluents, collecting second brown color product as a crude product, and concentrating and drying the crude product to obtain the compound. The pyridine fused norcorrole compound and the preparation method thereof have the following advantages: the reaction conditions are stable, the yield is high, the operation is simple and safe, and batch production can be realized.

The invention discloses preparation and application of a photocatalyst Ag / AgBr, and belongs to the technical field of nanocatalysts. According to the method, 1-butyl-3-methylimidazole bromine ([BMIM]Br) is prepared from N-methylimidazole and n-butyl bromide under certain conditions, wherein a preparation method comprises the steps that a certain amount of N-methylimidazole and a certain amount of n-butyl bromide are weighed and put into a round-bottom flask to be stirred and refluxed for a period of time in a high-temperature water bath to obtain faint yellow thick liquid, and 1-butyl-3-methylimidazole bromine ([BMIM]Br) which is collected after cooling has the very high catalytic activity in preparation of the photocatalyst Ag-AgBr by serving as a precursor.

The invention discloses a method for processing strobili of pinus massoniana. The method comprises the following steps: (1) fixation: spreading fresh strobili of pinus massoniana and sunning for 3-5 days; (2) degreasing: gathering and piling up the strobili fixed in the step (1), thoroughly watering the strobili, sealing the strobili with a film and bubbling for 3-5 days; and (3) airing: spreading and tedding the strobili bubbled in the step (2), wherein the strobili are turned 1-3 times every day and crack 5-7 days later; and collecting the seeds in time. According to the invention, through the preprocessing steps such as fixation, degreasing and the like for the strobili, the cracking time of the strobili of pinus massoniana is shortened, the opening is neat, and the seed yield is high.In the same conditions, the seed production time is shortened by 20-25 days, the method can be used for effectively responding to adverse weather such as low temperature, overcast and rainy days and the like in southern winter, and improving the strobili processing efficiency; and moreover, the operation is simple and convenient, the method is economical and practical, and the method is suitable for popularization and application in various scientific research and production institutions.

The invention provides a carbon-based magnetic mesoporous composite microsphere and a preparation method thereof, belonging to the technical field of the preparation of an inorganic composite material. The diameter of the carbon-based magnetic mesoporous composite microsphere particle is 3-6 microns, the specific surface area of the microsphere is 270-315 m2 / g, the pore diameter is 4-8 nanometers, and the pore volume is 0.15-0.31 cm3 / g. The preparation method comprises the following steps: firstly, synthesizing an FexOy / carbon-based composite microsphere; and then, preparing the gamma-Fe2O3 / carbon-based magnetic mesoporous composite microsphere. The invention has the following obvious advantages: the FexOy / carbon-based composite microsphere is synthesized in one step, the activation and magnetization are synchronously carried out, and the obtained material has a simplex magnetic component, is in a mesoporous structure and has a large specific surface area. The preparation method of the mesoporous carbon-based magnetic composite microsphere is simple and easy to control magnetically, can be used as a micro adsorbent or magnetic targeted drug carrier, and has potential application value in delivery and separation processes.