Integrated residual pressure recovery device

Abstract

The invention discloses an integrated residual pressure recovery device. The integrated residual pressure recovery device comprises a compression end, an intermediate body and an expansion end which are connected in sequence. A spindle is mounted in the intermediate body and penetrates through a compression end impeller and an expansion end impeller. The expansion end comprises a gas inlet channel, an expansion end volute, an expansion end nozzle and the expansion end impeller mounted on the spindle. The compression end comprises a gas inlet channel, the compression end impeller mounted on thespindle, a pressure expander and an expansion end volute. The integrated residual pressure recovery device provided by the invention can effectively recover and convert available energy in tail gas and recovers residual energy in the tail gas through the expansion end, that is, nitric acid tail gas does work through the expansion end impeller. Pressure energy of the tail gas is converted into mechanical energy to drive the compression end impeller to pressurize process gas. The integrated residual pressure recovery device can recover the residual energy in the nitric acid tail gas and compress the process gas and has remarkable economic benefits and social benefits.

Description

technical field [0001] The invention relates to the technical field of residual pressure recovery, in particular to an integrated residual pressure recovery device. Background technique [0002] At present, in the face of the tense situation of the world's energy situation, domestic and foreign countries have been researching alternative new energy sources, and at the same time, energy recovery and utilization are also carried out in the process of energy conservation and emission reduction. The so-called residual pressure and heat recovery refers to the excess pressure differential energy released by enterprises in the production process, which can be recycled under certain conditions. The recovery of waste heat and pressure mainly comes from high-pressure and high-temperature gases, and the recovery of waste heat and pressure is mainly used in industries such as iron and steel, coal, building materials, chemicals, textiles, and metallurgy. [0003] At present, waste heat ...

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Problems solved by technology

[0003] At present, waste heat utilization projects in some enterprises have not been fully developed, especially small and medium-sized enterprises. However, with the increase in energy prices, waste heat and pressure utilization devices have gradually been recognized by the market and enterprises, and the market application space is relatively large

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