A method of entrapping chlorine dioxide gas, including the steps of using an aqueous solution containing an alkaline substance and an iodide and bringing air containing the chlorine dioxide gas into contact with the aqueous solution.

The present invention discloses a method and a device for recovering ethylene during the process for producing vinyl acetate, wherein a double solvent absorption method composed of an absorbent solution and deionized water is adopted. The method is as follows: introducing an outlet stream as an absorbent solution from the upper section of the feeding plate in an acetic acid tower during the rectification stage of vinyl acetate production; delivering same to the top of the lower section of the ethylene recovery tower by a delivery pump; charging refined gas from the tower bottom of the ethylene recovery tower for contacting with the absorbent solution in a counter-current; delivering the absorption bottom solution to the rectification stage for treatment; the gas continuing to rise to the upper section of the ethylene recovery tower and contacting with the deionized water introduced from the top of the tower in a counter-current; absorbing and removing the acetic acid therein; and discharging the residual inert gas, such as N2, from the top of the ethylene recovery tower. The absorbent solution is a mixture of acetic acid, vinyl acetate and water, and comprises by weight percentage of 50-85% acetic acid, 5-30% vinyl acetate and 5-20% water.

Plants, processes, and methods for reducing the H.sub.2S and CO.sub.2 contents of shale gasses from fields that produce shale gasses having varying H.sub.2S and CO.sub.2 contents are provided. Acid gas enters an absorber and is scrubbed using a lean physical solvent, producing a treated gas and a rich physical solvent. The H.sub.2S content of the treated gas is further reduced in an amine absorber, producing a pipeline gas and a semi-lean amine. The pipeline gas contains lower levels of H.sub.2S and CO.sub.2 than gas produced using a polishing bed. A physical solvent regeneration unit regenerates the lean physical solvent from the rich physical solvent for feeding into the absorption unit. An amine regeneration unit regenerates the lean amine from the semi-lean amine for feeding into the amine absorber. Contemplated plants may further comprise a Claus Unit or a Redox unit for oxidizing H.sub.2S to elemental sulfur.

A humidity control system includes a humectant system including a humectant material including a viscous miscible glycerol and water mix and a humectant package.

A humidity control system includes a humectant material, an oxygen absorbing composition, and a package housing the humectant material and the oxygen absorbing composition.

A humidity indicating card includes a humidity indicator and a security device.

A humidity control system includes a humectant system including a humectant material including a viscous miscible glycerol and water mix and a humectant package.

A humidity control system includes a humectant material, an oxygen absorbing composition, and a package housing the humectant material and the oxygen absorbing composition.

A humidity indicating card includes a humidity indicator and a security device.

A fertilizer product is produced by a method of removing sulfur from flue gas. The method includes: introducing a flue gas stream to a wet scrubber; contacting the flue gas stream with a liquid nitrogen reagent in the wet scrubber that deposits in a bottom portion of the wet scrubber as a liquid fraction and possibly contacting the liquid fraction from the wet scrubber with an oxidizing gas; discharging reacted liquid nitrogen product from the wet scrubber that contains sulfur removed from the flue gas stream and that comprises a nitrogen and sulfur enriched fertilizer solution; and discharging flue gas exhaust from the wet scrubber.