3results about How to "Reduce metal pollution" patented technology

Provided is a technique capable of reducing metal contamination while performing direct-current sputtering using a gallium target. A direct-current sputtering device has: a substrate holding portion that holds a substrate; a target container that holds a gallium target containing gallium in a manner facing a main surface of the substrate in a first direction; a direct-current power source that applies direct-current electric power to the gallium target; and a conductor that is connected at one end to a negative side of the direct-current power source and at the other end to the gallium target inside the target container and is formed of a gallium corrosion-resistant metal. Further, the direct-current sputtering device has: a sputtering gas supply portion that has a gas supply port that supplies a sputtering gas between the target container and the substrate holding portion; and a magnet portion that is located on the side opposite the substrate holding portion with respect to the target container and has a ring-shaped high-density plasma region in which the density of plasmaized sputtering gas is higher than the surrounding on a surface on one side of the gallium target in the first direction.

The invention discloses a gas-solid separation device for a catalytic cracking hydrogen production and carbon material co-production process, and relates to the technical field of catalytic cracking auxiliary separation, the gas-solid separation device comprises a DCS control system, a cyclone separator and a metal film filter; the cyclone separator is connected with a mixed flue gas feeding pipe, the metal film filter is respectively connected with a tail gas emission assembly and a tail gas back flushing assembly, and the cyclone separator is connected with the metal film filter through an exhaust pipe; a temporary storage bin, a material bin and a discharging pipe are sequentially fixed to the lower end of the cyclone separator and the lower end of the metal film filter, a nitrogen replacement assembly is arranged on the material bin, and the DCS is used for controlling opening and closing of the cyclone separator, the nitrogen replacement assembly, the tail gas discharging assembly and the tail gas back flushing assembly. According to the invention, effective separation of three substances, namely the metal-based catalyst particles, the carbon material and the hydrogen-containing gas, can be realized, air cannot enter the separation process, and the safety and the environmental protection property are improved.

The utility model discloses a steam turbine oil tank filter structure, including two top cover plates of fixed in steam turbine oil tank body top surface, the bottom of metal frame is inserted to the inboard of steam turbine oil tank body through bar -shaped spigot, and the inboard of metal frame is provided with filter core, the steam turbine oil tank filter structure of the application, through design slanted guide groove cooperation magnetism strip on filter core, effectively solved the problem of inconvenient and metal scrap recycling wear and tear of impurity cleaning in the prior art, in particular, slanted guide groove can guide the scrap that filter core is close to oil inlet side one side intercepts to groove bottom, avoids its direct drop in the bottom of oil tank, thereby facilitating the concentrated cleaning of subsequent, magnetism strip can adsorb the metal component in scrap, further reduce the metal pollution in oil tank, protect steam turbine parts from wearing and tearing, simultaneously, the design of top locking structure and sealing mechanism makes the disassembly and maintenance of filter core become simple and fast, shortens the maintenance time, and reduces the maintenance cost.