4results about How to "Not easy to explode" patented technology

This application relates to the field of trifluoromethylbenzenesulfonyl preparation processes, and more particularly to an explosion-proof trifluoromethylbenzenesulfonyl synthesis apparatus, comprising a reaction vessel with an inlet and an outlet, a stirring shaft rotatably mounted inside the reaction vessel, and a discharge pipe connected to a reaction chamber at the end of the discharge pipe furthest from the reaction vessel. The reaction chamber contains a substance for treating trifluoromethyldiazomethane. This application has the effect of reducing the possibility of explosion during the preparation process.

This invention discloses an alkaline ionic liquid catalyst, its preparation method, and its application. The alkaline ionic liquid catalyst has the structural formulas [DBUH]phy, [TBDH]phy, and [DBUH]tbd. The calculated amounts of 1,8-diazabicycloundec-7-ene (DBU), 1,5,7-triazidobicyclo(4,4,0)dec-5-ene (TBD), and phenol (phy) are reacted to obtain the alkaline ionic liquid catalyst. It is used to synergistically catalyze a series of reactions between aliphatic diols and CO2 to synthesize cyclic carbonates with H2SO4, exhibiting high selectivity and wide applicability. Compared with existing cyclic carbonate synthesis processes, the synthesis of cyclic carbonates via alkaline ionic liquid catalysts from aliphatic diols and CO2 is safer, pollution-free, and features good catalyst stability, low dosage, high selectivity, and no byproducts.

The utility model relates to the technical field of carton line pressing, and discloses a line pressing device of a paper separator for carton production, which comprises a base and rotating rollers, first side plates are vertically fixed on two sides of the middle position of the surface of the base, two rotating rollers are transversely and rotatably mounted between the first side plates on two sides, line pressing wheels are further mounted on outer rings of the rotating rollers, and the first side plates are vertically fixed on the base. Transverse plates are transversely fixed between the first side plates above the upper rotating roller and below the lower rotating roller, inner grooves are formed in the transverse plates, sponge blocks are embedded in the inner grooves, and the line pressing wheels make contact with the surfaces of the sponge blocks through openings which are formed in the surfaces of the transverse plates and communicate with the inner grooves. According to the technical scheme, the transverse plate is arranged above or below the rotating roller, the sponge block arranged in the inner groove is aligned with the line pressing wheel and makes contact with the line pressing wheel at the same time, the interior of the sponge block can be wetted with clean water, the line pressing wheel rotates to remove the clean water on the sponge block, and the dryness of a line pressing area of a paperboard can be reduced during line pressing; therefore, the quality of the final carton is ensured.

The utility model discloses a combined type grinding wheel grinding structure which comprises a wheel disc, a center installation ring is fixedly installed in the center position of the wheel disc, two pairs of fan-shaped bottom plates are installed on the wheel disc, fan-shaped grinding wheels are installed on the two pairs of fan-shaped bottom plates respectively, inner metal wire meshes are arranged in the fan-shaped grinding wheels, and the inner metal wire meshes are arranged on the inner metal wire meshes. The utility model relates to the technical field of grinding wheels, a traditional integrated disc grinding wheel is manufactured into the grinding wheel formed by combining two pairs of fan-shaped grinding wheels, a gap is reserved between the two pairs of fan-shaped grinding wheels, in the high-speed running process, the fan-shaped grinding wheels are arranged on the fan-shaped bottom plate, the fan-shaped bottom plate is arranged on the fan-shaped bottom plate, and the fan-shaped bottom plate is arranged on the fan-shaped bottom plate. The gap can meet the requirement for volume change caused by high-temperature expansion, when the grinding wheel is subjected to external force, the two pairs of fan-shaped grinding wheels are usually only damaged independently and cannot be damaged suddenly and integrally, and the situation that a grinding wheel exploding piece component splashes is greatly reduced.