Tail gas heat recovery equipment for nitric acid production

• Main Authors: CHAI XIANGYANG, ZHANG JUANJUAN, ZHAO RUISHENG, GUO YUANYUAN
• Format: Patent
• Language: Chinese; English
• Published: 16.07.2019
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The utility model provides tail gas heat recovery equipment for nitric acid production. The tail gas heat exchanger comprises a tail gas heat exchange section, the tail gas heat exchange section comprises a heat exchange pipeline and an inner barrel surrounding the heat exchange pipeline, the inner barrel is covered with an upper outer shell, the inner barrel extends outwards to form a cold tail gas inlet, the cold tail gas inlet penetrates through the upper outer shell to be communicated with the outside, and a cold tail gas outlet is further formed in the side wall of the outer shell. The condensate heat exchange section comprises a lower outer shell connected with the upper outer shell, a fin pipeline is arranged in the lower outer shell, and the two ends of the fin pipeline extend outwards to form a condensate inlet pipe and a condensate outlet respectively; and the upper outer shell is connected with the lower outer shell through a short section. The tail gas heat exchange sectionand the condensate heat