NOVELTY - Chemical production system (10) comprises intake chamber (12) having intake ports (14a, 14b) for entry of gas mixture, and igniter (16) to ignite gas mixture in the intake chamber; nozzle (18) to restrict exit of ignited gas (6) mixture from intake chamber; and expansion chamber (20) to cool ignited gas with cooling agent, where expansion chamber has exhaust (22) where cooled gas (8) exits the expansion chamber, where chemical compound product is formed in expansion chamber.    USE - As chemical production system for producing chemical compounds such as fertilizer (particularly inorganic fertilizer).    ADVANTAGE - The chemical production system can be operated with multiple passes, where the product which is gas, is reintroduced into the intake chamber, this enables the chemical compound product to be concentrated. The process can be accomplished without the need for carbon-based energy or feedstock, where the operations can be carried out on smaller scale, in remote environments without the need for elaborate laboratory establishments and/or expensive, difficult to operate equipment.    DETAILED DESCRIPTION - Chemical production system (10) comprises intake chamber (12) having intake ports (14a, 14b) for entry of gas mixture, and igniter (16) to ignite gas mixture in the intake chamber; nozzle (18) to restrict exit of ignited gas (6) mixture from intake chamber; and expansion chamber (20) to cool ignited gas with cooling agent, where expansion chamber has exhaust (22) where cooled gas (8) exits the expansion chamber, where chemical compound product is formed in expansion chamber. The system further comprises calcium carbonate or other lime-based compound in the expansion chamber, where emerging nitrogenous oxides interacts with calcium carbonate or other lime-based compound to form calcium nitrate.    DESCRIPTION OF DRAWING(S) - The figure shows simple schematic diagram of chemical production system.    Ignited gas (6)    Cooled gas (8)    Chemical production system (10)    Intake chamber (12)    Intake ports (14a, 14b)    Igniter (16)    Nozzle (18)    Expansion chamber (20)    Exhaust (22)