Acid solution and hydrogen recycling method and equipment thereof

Abstract

The invention discloses an acid solution and hydrogen recycling method and an equipment thereof. The acid solution and hydrogen recycling method comprises following steps: S1, a condenser is used for cooling gas which contains hydrogen, sulfuric acid, phosphoric acid, and water vapor, and is discharged from a reaction kettle so as to realize backflow of water vapor and acid mist in the gas into the reaction kettle after conversion from gas state into liquid state via condensation; S2, the gas which contains hydrogen and is discharged from the condenser is subjected to acid mist removing purifying using a neutralizing tower, a alkali solution circulate spraying water pump is used for spraying and adding alkali solution, and neutralization of the added alkali solution with the acid mist in the gas containing hydrogen is realized; S3, a deentrainment tower is used for demisting of the gas containing hydrogen; S4, head water is used for isolating the atmosphere, and the pressure in a system in the front of the deentrainment tower is controlled in a certain range; and S5, a safe water seal is adopted, when the pressure in the system in the front of the deentrainment tower exceeds the certain range, the gas containing hydrogen is introduced into the safe water seal through a constant pressure water seal, and under normal working states, the gas containing hydrogen is delivered into a hydrogen utilization system via a gas discharge pipe on the safe water seal.

Description

[0001] Technical field: [0002] The invention relates to an acid solution reuse and hydrogen recovery process and equipment thereof. [0003] Background technique: [0004] In the production of industrial enterprises, metal reactors are set up in many processes. The production conditions are: under certain pressure and temperature conditions, metal powder is added to sulfuric acid and phosphoric acid for reaction. The by-product of the reaction gas is hydrogen gas, mixed with sulfuric acid, Phosphoric acid, water vapor, etc. [0005] The status quo is that most enterprises do not use this part of gas by-products or even discharge them directly to the outside world, which will inevitably cause environmental pollution and waste of resources. [0006] Even if some enterprises reuse or treat this part of the by-product gas, the process is complicated and expensive, which leads to poor economic benefits of recycling and treating this part of the gas, and the investment and output ...

AI Technical Summary

Problems solved by technology

[0005] The status quo is that most enterprises do not use this part of gas by-products or even directly discharge them to the outside world, which will inevitably cause environmental pollution and waste of resources

[0006] Even if some enterprises reuse or treat this part of the by-product gas, the process is complicated and expensive, which leads to poor economic benefits of recycling and treating this part of the gas, and the investment and output cannot maximize the benefits.

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