32results about How to "Avoid contact reactions" patented technology

The invention provides a thermal power plant high-temperature flue gas waste heat recovery device using a single tank of molten salt heat exchange, belonging to the technical field of molten salt heat exchange, including: hot air inlet pipe, upper cold tank area, molten salt heating area, and lower hot tank zone, hot zone for molten salt, spiral rising cold tank zone, thermal insulation and dust removal zone, and maintenance spare tank zone. On the outer ring of the cylindrical area, the spiral rising cold tank area surrounds the outer ring of the heat preservation and dust removal area. The molten salt flows naturally from the upper cold tank area to the molten salt heating area to avoid the problem of dry burning of the heating device caused by the failure of the molten salt pump. On this basis, this device also solves the problems in the molten salt heat exchange technology, such as the molten salt is in contact with the outside world, the molten salt is easy to leak and difficult to detect, the heat preservation requirement is high, and the molten salt is easy to stay and condense. The entire molten salt heat exchange device has the characteristics of stability and reliability, small heat dissipation, maximum utilization of resources, and convenient maintenance.

The invention is applicable to the fields related to chemical production, and provides a sampling device for chemical analysis, comprising a sampling component for scooping up and holding the chemical; a sealing component for sealing and storing the chemical in the sampling component; The receiving component is used for receiving the sealing component and the sampling component; the operating component is used for removing the sampling component from the receiving component. After the sampling component completes sampling of the chemical agent, the sealing component seals the sampling component, so that the chemical agent in the sampling component is isolated from a large amount of air, and the containment component restricts the sealing component and the sampling component to be fastened to avoid the sealing component and the sampling component. It is opened during the transport process, which effectively avoids the problem that the chemical agent may volatilize during the long-distance transport process or the chemical agent may contact and react with substances in the air for a long time.

The invention discloses a sulfide electrolyte and a preparation method thereof, belonging to the technical field of battery materials. The sulfide electrolyte described in the product developed by the present invention is Li 4‑x Ge 1‑x m x S 4 ; In the sulfide electrolyte, containing partially crystallized Li 4‑x Ge 1‑x m x S 4 ; The sulfide electrolyte includes silicon crystallites whose mass is 1-3% of the mass of the sulfide electrolyte. The crystallized Li 4‑x Ge 1‑ x m x S 4 and amorphous Li 4‑x Ge 1‑x m x S 4 The mass ratio is 1:5~1:20. Partially crystallized Li 4‑x Ge 1‑x m x S 4 The average particle size is 0.01-50μm, and the average specific surface area is 1-20m 2 / g. The product obtained by the invention not only has good ion conductivity, but also has good air stability.