There is provided an apparatus and for removing pollutants from a gas. The apparatus comprises a gas flow path along which gas passes from an inlet to an outlet in use; and a cooling device on the gas flow path and orientated so as to direct the gas flow path upward towards the outlet. The apparatus is arranged in use to provide water and gaseous reagent to gas upstream of the cooling device in quantities based on one or more properties of the gas and a cooling capability of the cooling device so as to cause the reagent to react with one or more constituents of the gas to produce a reaction product and to cause the gas to reach its saturation point when passing through the cooling device thereby causing water in the gas to capture the reaction product, condense and pass out of the gas.

Systems and methods of preventing an event occurrence or mitigating effects of an event occurrence in an industrial facility are disclosed herein. In some embodiments, a first input is received from a first sensor and, based at least in part on the first input, an initial action is automatically generated. In response to the initial action, a second input is received from a second sensor and, based at least in part of the received first and second inputs, a likelihood of an event occurrence is determined. Based at least in part of the determined likelihood, a remedial action configured to prevent the occurrence of the event occurrence is automatically generated. In some embodiments, the remedial action is generated in real-time and can be directed to a process condition, environmental condition, or secondary source.

Disclosed herein is a system and method for sulphur-assisted carbon capture and utilization. The system includes a sulphur depolarized electrolyser (SDE) for receiving electricity, H.sub.2O and SO.sub.2 and for electrolysing the H.sub.2O and SO.sub.2 to produce hydrogen and sulphuric acid (H.sub.2SO.sub.4), a decomposition reactor for receiving and decomposing the H.sub.2SO.sub.4 into SO.sub.3 and H.sub.2O, wherein the H.sub.2O is recycled to the SDE, a sulphur submerged combustor for converting the SO.sub.3 to SO.sub.2 and producing S.sub.n vapor, a sulphur power plant for combusting S.sub.n vapor to produce SO.sub.2, electricity and heat and for supplying the SO.sub.2 and the electricity to the SDE and for supplying the heat to the decomposition reactor. The hydrogen is delivered to a carbon capture and utilization facility. An optional Flue Gas Desulphurisation (FGD) regenerable system removes SO.sub.2 from flue gas, a CO.sub.2 converter generates COS, and a separator separates the COS from the flue gas.

A method and system for collecting gaseous nitrogen compounds into an aqueous solution are provided. The method enables the combination of gaseous sulfur and nitrogen compounds in the aqueous solution to generate ammonium compound components, to include ammonium sulfate. Sulfur may be pressure injected into the solution as gaseous sulfur dioxide. Optionally, carbon may be introduced into the solution as gaseous carbon dioxide. The sulfur may be earlier sourced by a burning of a sulfurous solid. The pH of the solution may be monitored and the introduction of ammonia, carbon and/or sulfur may be halted or constrained while the pH of the solution is measured outside of specified range. The solution may be allowed to age to permit a mix of compounds of ammonium carbonate, ammonium bicarbonate and ammonium carbomate to restabilize and thereby encourage a renewed surge of ammonium sulfate generation.

In an example, a method of butadiene sequestration includes receiving an input stream that includes butadiene. The method includes directing the input stream to a first sulfur dioxide charged zeolite bed for butadiene sequestration via a first chemical reaction of butadiene and sulfur dioxide to form sulfolene.

A process for stabilizing nutrients in anaerobic digestate involves removing hydrogen sulfide and ammonia from biogas. This process involves circulating the digestate in a column and contacting it with the biogas. Additional ammonium bisulfite, ammonia, and/or sulfur dioxide may be added to the contacting device to remove hydrogen sulfide from the biogas. The reactions will create ammonium bisulfite, ammonium sulfite, and ammonium thiosulfate to prevent ammonia and hydrogen sulfide emissions to allow for land application.