This work presents the
design of a plant that will produce 250000kg/yr of lindane from benzene,
chlorine and water at high temperature and pressure using direct chlorination
method. The feeds are sent into a chlorinator, the crude product from the
chlorinator is continuously decanted into a decanter and the bottom product HCl
is further concentrated. Chlorine is seen as the limiting reactant and the
unreacted benzene and chlorine are vented. The concentrated fraction of HCl is
sent into a stripping column where about 20% of HCl is recovered at the top and
the bottom product is recycled. The top product from the decanter is
neutralized by 1% NaOH solution, the overhead product being benzene and
monochlorobenzene are separated by fractional distillation column where part of
the benzene are recycled and the lindane is sent into a crystallizer. The
design was based on the principle of material, energy balance, equipment
selection, specification and operational cost. The reactor was design and gave
a reactor volume of 2.85m3, diameter of 0.646m, height of 9.69m. The
lindane reactor has a conversion of 99.5% with a residence time of 11.23s.
During the costing analysis, it was shown that the total investment of the
N4,906,272,200 and with a payback time of 1.22 years and rate
return of 81.82% .The final product stream was found to contain 99%γ HCH,
0.22%β HCH, 0.46% α HCH and 0.37% delta and cogeners which meets the
specification as described in the statement of the problem.
Anene, C (2020). PLANT DESIGN OF 250,000KG/YR OF LINDANE. Afribary.com: Retrieved November 27, 2020, from https://afribary.com/works/plant-design-of-250-000kg-yr-of-lindane
Chikwado Emmanuel, Anene. "PLANT DESIGN OF 250,000KG/YR OF LINDANE" Afribary.com. Afribary.com, 07 Jan. 2020, https://afribary.com/works/plant-design-of-250-000kg-yr-of-lindane . Accessed 27 Nov. 2020.
Chikwado Emmanuel, Anene. "PLANT DESIGN OF 250,000KG/YR OF LINDANE". Afribary.com, Afribary.com, 07 Jan. 2020. Web. 27 Nov. 2020. < https://afribary.com/works/plant-design-of-250-000kg-yr-of-lindane >.
Chikwado Emmanuel, Anene. "PLANT DESIGN OF 250,000KG/YR OF LINDANE" Afribary.com (2020). Accessed November 27, 2020. https://afribary.com/works/plant-design-of-250-000kg-yr-of-lindane