Group II Technical Note, ICI Central Instrument Research Lab.
S F Bush with P A Sinclair.
Summary
This note summarises the design of new large chlorinators for a projected single stream chloromethanes plant taking 2500 M3/hr of methyl chloride and producing methylene chloride and chloroform down to a weight ratio of 0.7 to 1. This design is based on the CIRL theory of chlorination stability and is sized for operation at 45 psig (current operation 25-30 psig). The control strategy proposed is designed to be implemented by any combination of manual single loop and computer control; numerical values have still to be supplied.
Group II Technical Note, ICI Central Instrument Research Lab.
S F Bush with P A Sinclair
Summary
An analysis is presented of the mixing of chlorine and methyl chloride in the dip-pipes of chlorinators of Rocksavage type. Conclusions are drawn about the length of pipe needed for adequate mixing.
See also the section on Applications to existing products and processes.
Group II Research Note, ICI Central Instrument Research Lab.
S F Bush with P A Sinclair.
Summary
A method is described which has been used at CIRL and elsewhere to solve sets of algebraic equations arising from models of chemical reactions in well-stirred flow reactors. Application has also been made to the solution of sets of 150 or more equations arising from the reaction stability models. In both classes of problem the jacobian matrix is relatively stiff. The present method is a natural extension of the approximate implicit method for solving stiff differential equations and in the chemical kinetics case is advantageously combined with the reaction models input procedure described in an earlier report.
Group II Technical Note, ICI Central Instrument Research Lab.
S F Bush with P A Sinclair
Summary
A method of estimating the per step error in the approximate implicit method of integrating differential equations is described. The use of the estimate for step length control is discussed.
