FIELD: chemical industry. SUBSTANCE: small-sized device for endothermic reaction with metal tubes compact-arranged in a closed chamber, which uses tubular nozzles and an air-distributing grate for feeding fuel and air to the combustion air and producing long and thin jets in it. The device prevents impermissible local overheating of reaction tubes. Separate reaction tubes subjected to the effect of high temperatures as compared with other tubes do not lose their stability. EFFECT: enhanced service life. 17 cl, 9 dwg
