A process for recovering sulfur and carbon dioxide from a sour gas stream, the process comprising the steps of: providing a sour gas stream to a membrane separation unit, the sour gas stream comprising hydrogen sulfide and carbon dioxide; separating the hydrogen sulfide from the carbon dioxide in the membrane separation unit to obtain a retentate stream and a first permeate stream, wherein the retentate stream comprises hydrogen sulfide, wherein the permeate stream comprises carbon dioxide; introducing the retentate stream to a sulfur recovery unit; processing the retentate stream in the sulfur recovery unit to produce a sulfur stream and a tail gas stream, wherein the sulfur stream comprises liquid sulfur; introducing the permeate stream to an amine absorption unit; and processing the permeate stream in the amine absorption unit to produce an enriched carbon dioxide stream.

Oxidized disulfide oil (ODSO) compounds, derived from disulfide oil (DSO) compounds produced as by-products from the generalized mercaptan oxidation (MEROX) sulfur removal process, are effective as aromatic extraction solvents, thereby converting the low value or waste oil DSO products into a valuable commodity that has utility in improving the extraction of aromatics from hydrocarbons derived from fossil fuels.

A scrubber, an exhaust gas purification system comprising the scrubber, and an air purification method. The treatment water of the scrubber is plasma electrolytic water. The plasma electrolytic water is obtained after water is electrolyzed. The process of electrolysis is carried out in an electromagnetic water treatment device. The electromagnetic water treatment device comprises a cation exchange film, a water flow passage, at least one positive pole panel, at least one negative pole panel, and a magnetic device.

Processes and apparatuses for producing a C.sub.8 aromatic isomer product are provided. The processes comprise introducing a raffinate product stream comprising C.sub.8 aromatic isomers to an isomerization unit to provide an isomerized stream. The isomerized stream is separated to provide a first stream comprising C.sub.8 naphthenes and C.sub.7 aromatic hydrocarbons and a second stream comprising C.sub.8 aromatic isomers. The first stream is passed to an extractive distillation column to provide a recycle feedstream comprising the C.sub.8 naphthenes and an extract stream comprising the C.sub.7 aromatic hydrocarbons. The recycle feedstream is passed to the isomerization unit.

An air purifier (100) includes a housing (400) formed with an air duct (401), an ozone generation device (20), an activated carbon purification unit (80), and a fan (200) arranged in the air duct (401). The air duct (401) includes an air inlet (402) and an air outlet (403). The air outlet (403) is disposed indoors. The ozone generation device (20) and the activated carbon purification unit (80) are arranged in the air duct (401) along the direction of the air inlet to the air outlet (403), and the ozone generation device (20) is used to generate ozone. The fan (200) is used to suck gas from the air inlet (402) during operation and let the gas pass through the ozone generation device (20) and the activated carbon purification unit (80) to be discharged from the air outlet (403) into the room.

A hydrocarbon adsorbent, according to one embodiment of the present invention, comprises a copper-containing ZSM-5 zeolite, wherein a Si/Al molar ratio of the ZSM-5 zeolite may be 11.5 to 40, and the amount of the copper included is 1 wt % to 10 wt %.

A device and a process used to purify air from pollutants are disclosed. The device has at least one empty body defining a chamber intended to receive an air flow to be purified and having at least one inlet hole for the air, and at least one outlet hole for the air. The chamber has an electric field generator, at least one photocatalyst, intended to be excited by a luminous radiation, implementing a photocatalysis process, at least one luminous radiation source intended to excite the photocatalyst, and at least one adsorbing material. The electric field generator, the at least one photocatalyst and the at least one adsorbing material are disposed in the chamber in such manner to cooperate.

Oxidized disulfide oil (ODSO) compounds, derived from by-product disulfide oil (DSO) compounds produced as by-products from the generalized mercaptan oxidation (MEROX) in the practice of the process, are effective as aromatic extraction solvents. This use of ODSO compounds as an extraction solvent converts an otherwise DSO waste oil product into a valuable commodity that has utility in improving the extraction of aromatics from hydrocarbons derived from fossil fuels.

The present invention relates to the fractionation technology that is used to create purified phenol and acetone products. More specifically, the present invention relates to a fractionation technology that is used to create crude acetone and crude phenol streams using a dividing wall column intended to remove cumene, alpha-methyl styrene and water from the product side of the wall.

A cleaning device includes a housing, an air driver, an ozone generator, and a catalyst. The housing defines an inlet, an outlet, and an internal cavity connecting the inlet to the outlet. The air driver is positioned within the internal cavity. The air driver is configured to draw contaminated air from an external environment into the inlet and through the internal cavity of the housing to facilitate decontaminating the contaminated air and emitting clean air out of the outlet into the external environment. The ozone generator is positioned within the internal cavity. The ozone generator is configured to generate ozone. The catalyst is positioned within the internal cavity. The ozone and/or the catalyst are configured to interact with the contaminated air to produce the clean air.