What should be done with the large amount of hydrogen gas produced in the reaction?
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The reaction takes place at 2.5 MPa and 220 degrees; two times the molar amount of hydrogen is produced as a reactant. It is advisable to release pressure and vent hydrogen continuously as the reaction proceeds. What to do with the large amount of hydrogen produced? (Nitrogen should be mixed in.)
Could you be more specific? What device
Is it sealed? Is there any air inside? If only nitrogen and hydrogen are present, there is no problem with direct emission, but a flame arrester must be installed when releasing the gas, and the emission rate must be controlled.
When discharging, be sure to pay attention to the discharge speed; if there are coupling plates in the pipeline, copper wires should be installed. Prevent the generation of static electricity. Can a scrubber tower be used to collect gases?
Let’s do some pressure relief, heat exchange, and cooling first! Just pay attention to what Haiyou said on the 3rd floor, and that’s fine
Methods for dealing with excess hydrogen production: 1. Release a portion to the flare system； ⒉Reduce hydrogen production and manufacture according to demand ； ⒊With an excess of hydrogen produced, factories can consider installing new equipment to make use of it and avoid waste of resources.
Support the claim about the 3rd floor. “If only nitrogen and hydrogen are present, there is no problem with direct emission, but a flame arrester must be installed when releasing the gas, and the emission rate must be controlled. ”. Another point is that to prevent materials from spilling out, a safety storage tank should be added.
I wonder how much hydrogen is produced? Is the pressure stable and continuous? If the quantity is large, it is best to produce downstream products via hydrogenation. Hydrogen is a very valuable resource; it has a wide range of applications in chemical synthesis, especially in organic chemistry, and can also be used as a fuel. It would be a shame to use it merely as a raw material for hydrogenation products. If the quantity is too small to be worth recovering, it is better to release it into the atmosphere
The production of HCN through light oil cracking generates a large amount of H2; failing to recycle this gas represents a significant waste. It can be recycled either to produce liquid ammonia or to manufacture H2O2. The principle of hydrogen purification: Pressure swing adsorption technology relies on the physical adsorption properties of gas molecules by the surface of adsorbents. Taking advantage of the fact that adsorbents readily adsorb high-boiling-point components at constant pressure, while having difficulty adsorbing low-boiling-point components, and that the amount of adsorption increases under high pressure and decreases under reduced pressure (resulting in desorbed gas), two gases that have been desulfurized and deoxygenated are passed through an adsorbent bed under pressure. In this way, the high-boiling-point impurity components are selectively adsorbed, while the hydrogen along with the low-boiling-point components passes through the adsorbent bed, thereby achieving separation of hydrogen from the impurity components. Then, the adsorbed impurity components are desorbed under negative pressure to regenerate the adsorbent, facilitating its use for subsequent adsorption and separation of impurities. The process of adsorbing impurities to purify hydrogen under pressure, and desorbing those impurities under reduced pressure to regenerate the adsorbent, is known as pressure swing adsorption.
Hydrogen is a very valuable resource; it is required for the refining of many petroleum products. To purify hydrogen, membrane separation or PSA processes need to be employed as appropriate