Control of low inventory alkylation unit

Details Control of low inventory alkylation unit Control of low inventory alkylation unit

1993-12-01

1995-04-18

Santiago, Amalia L.

Chemistry: analytical and immunological testing

Condition responsive control

25033908, 25033911, 25033912, 356346, 422 67, 422 681, 422 8205, 422111, 436 60, 436 61, 436139, 436171, 585725, G01N 2135

Patent

active

054078300

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, Jr. 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.
Attenuated Total Reflectance Infrared Analysis of Aqueous Solutions, vol. 35, No. 11, Analytical Chemistry, Oct. 1963, pp. 1665-1670.
Simhony S. 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 Chem. 1988, 60, pp. 1908-1910.

Affiliated with

Also associated with

Rating

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.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-66407