Chemistry involves the study of all things chemical – chemical processes, chemical compositions and chemical manipulation – in order to better understand the way in which materials are structured, how they change and how they react in certain situations. Reference of 105-21-5
In order to effectively deal with large amounts of complex organic pollutants in the harmful distillation residues with low energy consumption, a novel two-stage fluid-bed/fixed-bed system was designed to catalyze oxidation of acrylic acid production residue. The effects of fluid-bed temperature, gaseous hourly space velocity (GHSV), and oxygen excess rate on the purification of acrylic acid production residue in the two-stage fluid-bed/fixed-bed system were studied to prove the feasibility of the method. The chemical oxygen demand (COD) of the discharged liquid was <100 mg/L, and the volatile organic compounds (VOCs) of the discharged gas amounted to <10 mg/m3 with a fluid-bed temperature of 380C, emulsified residue's GHSV of 0.28 L/(kgcat·hr), and O2 excessive rate of more than 4.32. The result of techno-economics indicates the feasibility of the long-term operation of process. Results further illustrate the advantages of the proposed two-stage fluid-bed/fixed-bed system, which can treat acrylic acid production residue with high efficiency (COD < 100 mg/L, VOCs < 10 mg/m3) and low energy consumption (~24,856 kw·hr/ton) in the chemical industry. Practitioner points: A novel two-stage fluid-bed/fixed-bed system was developed for acrylic acid production residue treatment. No extra energy was required at low temperature in the two-stage fluid-bed/fixed-bed system. Purification of residue could be finished at low temperature by the catalytic pyrolysis and catalytic oxidation process. The two-stage system did not produce toxic gases and particulate matters. Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 105-21-5. Reference of 105-21-5
Reference：
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem