A device (1) for dissolving a gas (G) in water (W) is provided, and includes a housing (100) configured to be submerged into the water (W) with the housing (100) having at least one water inlet (101), a gas inlet (102) and at least one water outlet (103) for discharging gas enriched water out of the housing (100), a pump (5) in fluid communication with the at least one water inlet (10) for sucking water (W) from a surrounding of the housing (100), the pump configured to generate a main water stream (S′), and means for injecting the gas (G) supplied via the gas inlet (102) into the main water stream (S′). The device (1) includes a probe (6) configured to measure a concentration of the gas dissolved in water, and the probe (6) is arranged in the housing (100) of the device (1).

A device (1) for dissolving a gas (G) in water (W) is provided, and includes a housing (100) configured to be submerged into the water (W) with the housing (100) having at least one water inlet (101), a gas inlet (102) and at least one water outlet (103) for discharging gas enriched water out of the housing (100), a pump (5) in fluid communication with the at least one water inlet (10) for sucking water (W) from a surrounding of the housing (100), the pump configured to generate a main water stream (S′), and means for injecting the gas (G) supplied via the gas inlet (102) into the main water stream (S′). The device (1) includes a probe (6) configured to measure a concentration of the gas dissolved in water, and the probe (6) is arranged in the housing (100) of the device (1).

Disclosed is a method for the removal of urea dust from the off-gas of a finishing section of a urea production plant. the method comprises subjecting the off-gas to quenching with water so as to produce quenched off-gas. The quenched off-gas is subjected to humidification by mixing said quenched gas stream with a humidification fluid selected from (a) saturated steam and (b) superheated steam mixed with a second aqueous stream, so as to produce a humidified gas stream, subjecting said humidified gas stream to particle separation (i.e., dust removal) by means of a scrubbing liquid in which at least part of the particles in the gas stream are soluble.

Disclosed is a method for the removal of urea dust from the off-gas of a finishing section of a urea production plant. the method comprises subjecting the off-gas to quenching with water so as to produce quenched off-gas. The quenched off-gas is subjected to humidification by mixing said quenched gas stream with a humidification fluid selected from (a) saturated steam and (b) superheated steam mixed with a second aqueous stream, so as to produce a humidified gas stream, subjecting said humidified gas stream to particle separation (i.e., dust removal) by means of a scrubbing liquid in which at least part of the particles in the gas stream are soluble.

A semiconductor manufacturing apparatus in this embodiment includes a reactor, a pump, an exhaust pipe and a mesh member. The reactor houses a semiconductor substrate to treat the semiconductor substrate. The pump exhausts a gas inside the reactor. The exhaust pipe connects between the reactor and the pump. The mesh member is located at a flow inlet of the pump for the gas or in the exhaust pipe and has a main plane having a plurality of meshes arranged thereon. The mesh member has a protrusion and/or protruding shape projecting upstream of the gas.

The present application provides a method for controlling soot make in a process for the gasification of a liquid carbonaceous feedstock. The gasification process comprises: partially oxidizing the carbonaceous feedstock in a gasifier to produce syngas; guiding the syngas from an outlet of the gasifier to a quench section; cooling the syngas in the quench section to provide cooled syngas; providing the cooled syngas to a soot removal unit; using the soot removal unit to remove solids from the cooled syngas, the soot removal unit providing a cleaned syngas stream and a waste slurry stream comprising the solids removed from the syngas; continuously monitoring a concentration of total suspended solids (TSS) in the waste slurry stream; providing the concentration of total suspended solids (TSS) to a control system. The control system continuously optimizes the gasification process to changes in concentration of total suspended solids, carbon-to-ash ratio, and optional additional parameters.

The present application provides a method for controlling soot make in a process for the gasification of a liquid carbonaceous feedstock. The gasification process comprises: partially oxidizing the carbonaceous feedstock in a gasifier to produce syngas; guiding the syngas from an outlet of the gasifier to a quench section; cooling the syngas in the quench section to provide cooled syngas; providing the cooled syngas to a soot removal unit; using the soot removal unit to remove solids from the cooled syngas, the soot removal unit providing a cleaned syngas stream and a waste slurry stream comprising the solids removed from the syngas; continuously monitoring a concentration of total suspended solids (TSS) in the waste slurry stream; providing the concentration of total suspended solids (TSS) to a control system. The control system continuously optimizes the gasification process to changes in concentration of total suspended solids, carbon-to-ash ratio, and optional additional parameters.

Embodiments of a system and a method for preparing mold-resistant paper comprising a wet scrubber assembly in fluid communication with at least one collection plenum disposed at an operational area of a paper manufacturing line. The wet scrubber assembly can be operated to draw a stream of exhaust air from the operational area of the paper manufacturing line through the wet scrubber assembly to remove particulate from the exhaust stream. Such systems and methods can be used to produce mold-resistant paper by coating a paper with an antimicrobial composition including at least one antimicrobial additive at the calendering stage. The collection plenum can be placed in proximate relationship with the calendering stack such that the amount of antimicrobial additive particulate in the air at the calendering stage is reduced. The mold-resistant paper can be used in a gypsum panel.

Embodiments of a system and a method for preparing mold-resistant paper comprising a wet scrubber assembly in fluid communication with at least one collection plenum disposed at an operational area of a paper manufacturing line. The wet scrubber assembly can be operated to draw a stream of exhaust air from the operational area of the paper manufacturing line through the wet scrubber assembly to remove particulate from the exhaust stream. Such systems and methods can be used to produce mold-resistant paper by coating a paper with an antimicrobial composition including at least one antimicrobial additive at the calendering stage. The collection plenum can be placed in proximate relationship with the calendering stack such that the amount of antimicrobial additive particulate in the air at the calendering stage is reduced. The mold-resistant paper can be used in a gypsum panel.

A filtering module includes a cyclone having a contaminated air inlet part into which external contaminated air and cleaning water cleaning the contaminated air are each introduced, and a cleaned air outlet part through which air cleaned by bringing the cleaning water into contact with the contaminated air is discharged; a water tank coupled to the cyclone, to which the cleaning water cleaning the contaminated air is introduced, and storing mixed water in which a pre-stored fluid and the cleaning water are mixed; and a fluid circulating part providing the mixed water stored in the water tank to the contaminated air inlet part.