A process for adsorbing hydrogen chloride (HCl) from a regeneration vent gas. The regeneration vent gas is cooled from a catalyst regeneration zone. The cooled regeneration vent gas is passed to an adsorption zone that is spaced apart from the catalyst regeneration zone. HCl from the regeneration vent gas is adsorbed onto a sorbent in the adsorption zone to enrich the sorbent with HCl to provide HCl-rich sorbent and deplete HCl from the regeneration vent gas to provide HCl-lean regeneration vent gas. HCl-lean regeneration vent gas is purged as an effluent gas. HCl-rich sorbent is passed from the adsorption zone to a sorbent regeneration zone. HCl from the HCl-rich sorbent in the sorbent regeneration zone is desorbed to provide a regenerated sorbent. The regenerated sorbent is transferred to the adsorption zone.

A portable dry scrubber comprises a gas flow control module comprising a gas receiving unit that receives inflow of gas from surrounding atmosphere or from a gas source, a gas processing module that removes hazardous matter from the gas flowed in through the gas receiving unit and a connection module that connects the gas flow control module detachably to the gas processing module. The connection module comprises quick coupling device that establishes and disassembles a gas flow passage between the gas flow control module and the gas processing module. Example of the quick coupling device is a quick release vacuum flange that engages with a connecting flange of the gas flow control module.

Provided is a hydrolysis reaction device for dechlorination and decyanation of blast furnace gas, including a tower body, where a top of the tower body is provided with an air inlet channel, and a bottom of the tower body is provided with an air outlet channel, and functional zones are arranged in the tower body. The functional zones are sequentially an air inlet zone, a first protective agent zone, a first transition zone, a second protective agent zone, a second transition zone, a hydrolysis zone and an air outlet zone along a gas direction, and adjacent functional zones are communicated. Feed holes and discharge holes are uniformly arranged on an outer side surface of the tower body. Gas in a tower radially passes through the protective agent zones and the hydrolysis zone.

A system for recycling cooling devices, comprising a system part for catalytically oxidizing the pure hydrocarbon compounds and chlorofluorocarbons which accumulate during the recycling of the cooling devices. According to the invention, this system part comprises two reactors, provided mutually separated in the flow direction of the gases to be treated, a first reactor being used for catalytically oxidizing the pure hydrocarbon compounds while a second reactor is used for catalytically oxidizing chlorofluorocarbons.

Processes and apparatuses for separating chlorides from a butane product stream by removing chlorides from a portion of said feed stream in a rectification section of the separation zone. The rectification section may be in a rectification column which may be combined with a stripper column. Alternatively, a wall may be used to provide the rectification section in a fractionation column. The processes and apparatuses can be used in both new designs and revamped designs.

A waste gas scrubber includes a reaction chamber configured to decompose waste gas, at least one heater configured to heat the waste gas flowing into the reaction chamber, a fine powder separation device configured to emit compressed air, and a monolith catalyst including a catalyst support, a plurality of catalyst inner cells, and at least one catalyst material, the catalyst support in the reaction chamber and configured to support the plurality of catalyst inner cells, and the at least one catalyst material configured to cause a chemical reaction with the heated waste gas, the catalyst support including a first surface at which a first end of each of the plurality of catalyst inner cells is exposed, and a second surface at which a second end of each of the plurality of catalyst inner cells is exposed.

[Technical Problem] To provide a chlorine gas decomposition catalyst that can remove chlorine gas contained in, for example, exhaust gas, with high efficiency, and is less likely to reduce catalyst components when used.

[Solution to Problem] A chlorine gas decomposition catalyst, including a composite oxide (X) of Al and at least one element M1 selected from the group consisting of Ce and Co.

Provided is an exhaust gas treatment method where chlorine gas and a perfluoro compound can be decomposed in exhaust gas containing the chlorine gas and the perfluoro compound to reduce both a concentration of the chlorine gas and a concentration of the perfluoro compound in the gas. The method of treating exhaust gas containing chlorine gas and a perfluoro compound includes: a chlorine gas decomposition step of causing the chlorine gas in the exhaust gas to react with water to be decomposed in the presence of a chlorine gas decomposition catalyst; a hydrogen chloride removal step of removing hydrogen chloride from the gas having passed through the chlorine gas decomposition step; and a perfluoro compound decomposition step of causing the perfluoro compound in the gas having passed through the hydrogen chloride removal step to react to be decomposed in the presence of a perfluoro compound decomposition catalyst.

Embodiments include a method for reducing corrosion in a pump exhaust foreline of a processing system. The method begins with the operation of a plasma processing system and evacuating a fluorine or chlorine containing gas into a processing chamber exhaust foreline as effluent. The effluent is abated in a plasma abatement system with a hydrogen containing reagent in a vacuum environment. The abated effluent contains one or more of HF or HCl at vacuum pressure. A controller runs a program to determine if a condition for condensation of HCl or HF exist based on a characteristic, flow rate and pressure of the effluent. A non-condensable gas is injected into the effluent. The abated effluent is pumped to a pump exhaust foreline coupled to an outlet of the pump, wherein the pump exhaust foreline is at atmospheric pressure.

A pyrolysis method and system are provided that utilizes a multistage dehalogenation method to effectively remove halogen-containing compounds that are present in an initial recycled plastic feedstock. More particularly, the multistage dehalogenation system and process may involve physical sorting the plastic feedstock, melting and separating the feedstock, and subjecting the feedstock a two-stage pyrolysis with intermediate HCl removal.