Chemistry: analytical and immunological testing – Condition responsive control
Patent
1995-04-17
1996-12-10
Warden, Jill
Chemistry: analytical and immunological testing
Condition responsive control
25033908, 25033911, 25039912, 356346, 422 67, 422 681, 422 8205, 422111, 436 60, 436 61, 436139, 436171, 585725, G01N 2135
Patent
active
055830498
ABSTRACT:
A method and system for controlling an HF alkylation system comprising a reactor, a settler, an HF acid regenerator and a source of fresh HF acid wherein a stream of olefins and a stream of isobutanes are contacted in the reactor in the presence an HF acid catalyst. At least the reactor feed is sampled, and the sample is passed to an analyzer using an attenuated total reflectance cell. Signals are generated which are representative of infrared spectra of the samples in a range providing information on the amount of at least one of HF, water, ASO and sulfolane. These signals are simultaneously determined and generated because all absorb in the same spectral region. This aspect provides for viewing these distortions of the main HF absorption band to quantify these three components. The infrared spectra signals are compared with stored signals to generate control signals; and at least one of HF, water and sulfolane fed to the reactor feed is adjusted in response to the control signal.
REFERENCES:
patent: 4205196 (1980-05-01), Makovec et al.
patent: 4207423 (1980-06-01), Makovec et al.
patent: 4276257 (1981-06-01), Dixon et al.
patent: 4543237 (1985-09-01), Webb et al.
patent: 4677244 (1987-06-01), Hachmuth et al.
patent: 4707603 (1987-11-01), Miemela et al.
patent: 5073674 (1991-12-01), Olah
patent: 5145785 (1992-09-01), Maggard et al.
patent: 5407830 (1995-04-01), Altman et al.
Katlafsky et al., Attenuated Total Reflectance Infrared Analysis of Aqueous Solutions, 35, Anal Chem, Oct. 1963, pp. 1665-1670.
Simphany et al., Fourier Transform Infrared Spectra of Organic Compounds in Solution and as Thin Layers obtained by Using an Attenuated Total Internal Reflectance Fiber Optic Cell, analytical Chemistry, 1988, 60, pp. 1908-1910.
Zhaohul et al., Use NIR Spectroscopy for On-line Gasoline Analysis, Hydrocarbon Processing, Jan. 1992, pp.92-96.
Altman Lawrence J.
Jalkian Rafi
Bleeker Ronald A.
Harris Gerry L.
Keen Malcolm D.
Mobil Oil Corporation
Pyon Harold Y.
LandOfFree
Control of low inventory alkylation unit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control of low inventory alkylation unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control of low inventory alkylation unit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-423697