Device for simultaneously recycling different pressure dead steam and using method of device

Abstract

The invention provides a device for simultaneously recycling different pressure dead steam. The device comprises a driver and a steam compressor, the steam compressor is a multistage steam compressor,the multistage steam compressor is driven by the driver, the series of the multistage steam compressor is not less than the pressure rating number of raw material steam to be compressed, an externally-connected steam inlet is formed in each stage of the multistage steam compressor, the raw material steam with different pressure rating sequentially enter the stages of the steam compressor throughthe externally-connected steam inlets according to pressure from small to large, the stages of the steam compressor lift and press the raw material steam to the same with the next-stage raw material steam pressure rating, the raw material steam is jointly fed into the next stage for compressor, the final stage of the steam compressor lifts and presses the raw material steam to the same with steampipe system pressure rating, and the raw material steam is fed into a steam pipe system. Dead steam of different pressure can be simultaneously recycled, the pressure loss formed by the dead steam being mixed into a stream of dead steam to enter the steam compressor can be eliminated, and the power of the steam compressor is reduced.

Description

technical field [0001] The invention belongs to the technical field of steam compressors, and relates to a steam compression process device for simultaneously recovering exhaust steam of different pressures. Background technique [0002] Chemical enterprises have different pressure levels of exhaust steam, and its sources are divided into two parts: one is the self-produced process equipment; the other is the steam condensate flash evaporation output of different pressures. The temperature and pressure of the exhaust steam are too low to meet the needs of users, so it is necessary to pressurize and increase the temperature of the exhaust steam to meet the needs of users. [0003] The function of the steam compressor is to pressurize and heat up the low-pressure (low-temperature) steam to meet the temperature and pressure requirements required by the process or project, and its power consumption is proportional to the elevated pressure. Ordinary multi-stage steam compressors...

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Problems solved by technology

[0004] The conventional practice of chemical companies to recover exhaust steam is to mix exhaust steam of different pressure levels to the lowest pressure and then send it to the steam compressor for pressure increase. There is a loss of pressure energy during the process of exhaust steam mixing, and the lost pressure energy requires electricity. It can be increased, resulting in a large power consumption of the steam compressor, which even exceeds the value of exhaust steam recovery, resulting in exhaust steam that cannot be recovered, resulting in a waste of heat resources

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