A non-emission finished product air-cooled blowing heat regenerative drying process

Abstract

The invention relates to an emission-free finished gas cold blowing heat regenerative drying process. The process comprises the following steps: (1) adsorbing: introducing compressed gas into an adsorbent for adsorption work, discharging the compressed gas after being subjected to adsorption drying into a gas outlet to serve as finished gas; (2) regenerating: (2.1) introducing regenerated thermal gas flow into an adsorbent for regeneration, heating the adsorbent by using the regenerated thermal gas flow to desorb and regenerate the adsorbent; (2.2) introducing a part of the finished gas obtained in the step (1) into an adsorbent for regeneration, cold blowing, regenerating and cooling the adsorbent for second half period use and obtaining hot cold blowing gas; condensing the hot cold blowing gas, discharging the obtained gas serving as finished gas into the gas outlet and discharging the obtained free liquid; and (3) switching: switching the step (1) adsorbing and the step (2) regenerating according to the adsorption requirement and circulating the adsorbing and the regenerating. The process disclosed by the invention is capable of realizing the zero emission of finished gas cold blowing regeneration and is high in automation degree, safe in use, beneficial to environmental protection and good in regeneration effect.

Description

technical field [0001] The invention relates to a non-emission product air-cooled blown heat regeneration drying process. Background technique [0002] In industrial production, some industries such as chemical instrumentation, pneumatic control, powder input and transportation, tobacco, food, medicine and other industries require the use of dry compressed air. Compressed air can be used as the air source of industrial control actuators, the air source of solid conveying, the power air source of pneumatic tools, etc. [0003] Compressed air contains a considerable amount of water. After the air is compressed and condensed into wet-saturated air, it entrains a large number of liquid water droplets. They are the root cause of equipment, pipelines and valves rusting, blocking, wearing, and reducing the life of wearing parts; In winter, these liquid droplets freeze and block the small orifice passages in the pneumatic system. This is undoubtedly a threat to the continuous prod...

AI Technical Summary

Problems solved by technology

[0007] 1. During the regeneration process, the regeneration gas needs to be emptied, the energy consumption is high, and a certain amount of product gas is consumed, which reduces the working efficiency of the entire device

[0008] 2. For process gases, natural gas, carbon dioxide, carbon monoxide, hydrogen and toxic and harmful gases, they cannot be discharged directly into the atmosphere, otherwise they will cause harm to the atmosphere and pollute the environment

[0009] 3. If the exhaust gas is recovered and treated, equipment and funds will be increased; the process of exhaust gas will cause the pressure in the tank to decrease, which will easily cause the pulverization of the adsorbent

[0010] 4. Noise will be generated when the compressed gas is vented

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