摘要:
An inlet assembly for a burner and a method are disclosed. The inlet assembly is for an abatement burner and comprises: an inlet conduit operable to convey an effluent gas stream to be treated from an inlet aperture via a bore to an outlet aperture for treatment; and a lance conduit operable to convey a fuel gas from a gas inlet aperture via a gas bore to a gas outlet aperture positioned within the bore for mixing with the effluent gas stream, a cross-sectional area of the gas bore increasing towards the gas outlet aperture. In this way, the expansion caused by the increasing cross-sectional area of the gas bore enhances the mixing of the fuel gas with the effluent gas stream which provides for improved destruction and removal efficiencies (DRE), which enables the inlet assembly to be operated with reduced quantities of fuel gas, while still maintaining required levels of DRE.
摘要:
The efficiency of an etching process may be increased in various ways, and the cost of an etching process may be decreased. Unused etchant may be isolated and recirculated during the etching process. Etching byproducts may be collected and removed from the etching system during the etching process. Components of the etchant may be isolated and used to general additional etchant. Either or both of the etchant or the layers being etched may also be optimized for a particular etching process.
摘要:
Disclosed are particulates of calcium oxide and calcium hydroxide which are suitably used for filling a gas fixing unit (32) of a fixation device (3) for a halide gas. Particularly disclosed are those particulates highly reactive with a halide gas or a decomposition product thereof. Specifically disclosed is a porous calcium oxide particulate composed of spherical porous calcium oxide particles, which has a BET specific surface area of not less than 50 m 2 /g. The total pore volume of pores having a diameter of 2-100 nm contained in all the porous particles is within the range of 0.40-0.70 mL/g. Also specifically disclosed is a porous calcium hydroxide particulate composed of spherical porous calcium hydroxide particles, which has a BET specific surface area of not less than 20 m 2 /g. The total pore volume of pores having a diameter of 2-100 nm contained in all the porous particles is within the range of 0.25-0.40 mL/g.
摘要:
A system for controlling emissions of hazardous, toxic or otherwise undesirable components in a waste gas stream, while maintaining uptime through decreased maintenance and repair, is provided. The system oxidizes the waste gas stream at high temperatures with a thermal oxidizer (110), effectively removes particulates in the waste gas stream as well as moderate levels of acid gas through a cyclone scrubber (120), and removes the remainder of the acid gas content in the waste gas stream through he use of a packed column (130). Finally, a condenser (140) lowers the moisture content of the waste gas stream before leaving the system by way of a blower (150), reducing the chance of condensation and corrosion in the facility ductwork. As a result, the system can run for sustained periods of time, reducing downtime in semiconductor operations and associated loss of revenue.
摘要:
The present invention relates to apparatus (10) for treating a gas stream (12). A plasma generator (14) generates a plasma flare (16). A first inlet (18) conveys the gas stream into the apparatus. A reaction chamber (20) is located downstream of the plasma generator in which gas is treated. A second inlet (22) receives a liquid (32) into the apparatus for establishing a liquid weir (24) over an interior surface (26) of the reaction chamber for resisting accumulation of solid deposits on the interior surface. A weir guide (28) has an outer annular surface (30) for directing liquid over the interior surface and an inner annular surface (34) in flow communication with the outer surface so that liquid flows form the outer surface to the inner surface to resist depositing on the inner surface.
摘要:
A method of sequestering a multi-element gas emitted by an industrial plant is described herein, the method comprising: contacting a solution, including a first reactant comprising a multi-element gas emitted by an industrial plant and at least one gas absorber comprising nitrogen, for example ammonia or an amine, with a solid, including a second reactant, under conditions that promote a reaction between the first reactant and the second reactant to provide a first product, which incorporates one or more elements of the multi-element gas, thereby sequestering the multi-element gas.
摘要:
A method of fabricating an electonic device which comprises a step of etching a sacrificial layer with an etchant comprising a noble gas fluoride, e.g. Xenon Fluoride (Xe F2). The efficiency of the etching process may be increased in various ways, and the cost of an etching process may be decreased. Unused etchant may be isolated and recirculated during the etching process. Etching byproducts may be collected and removed from the etching system during the etching process. Components of the etchant may be isolated and used to general additional etchant. Either or both of the etchant or the layers being etched may also be optimized for a particular etching process.
摘要:
A method for removing fluorine gas from a selected environment comprises contacting the fluorine gas with water to generate a solution of hydrofluoric acid and contacting the solution of hydrofluoric acid with an ion exchange resin having an active state operative to exchange selected ions therein for fluoride ions in the solution. The apparatus (200) may include a dual resin setup (222, 223) such that one of the ion-exchange resin can be in the service cycle while the other of the ion-exchange resins undergoes the regeneration and rinse/refill cycles.