PL70582B2

PL70582B2 -

Info

Publication number: PL70582B2
Application number: PL14574571A
Authority: PL
Priority date: 1971-01-21
Filing date: 1971-01-21
Publication date: 1974-04-30

Description

Z powodu duzej bezwladnosci masy soku i opóznienia czasowego uklad taki w praktyce jest poddawany ciaglym oscylaqom alkalicznosci w zakresie kilku jednostek pH. Inne rozwiazanie ukladu automatycznego sterowania posiadalo pehametr regulu¬ jacy doplyw gazu do saturaqi I ustawiony miedzy saturatorami IA i IB, lecz takze nie pracowalo zadowalajaco.Celem wynalazku jest poprawienie skutecznosci regulaqi pH soku po saturaqiI przez zastosowanie nowego ukladu.Rozwiazanie techniczne wynalazku przewiduje dwa obwody automatycznej regulacji. Pierwszy ma za zada¬ nie doprowadzac glówna ilosc gazu saturacyjnego do saturatora IA proporcjonalnie do ilosci soku nawapnionego, czyli do ilosci wapna. Drugi obwód wykona ostateczna precyzyjna korekte wprowadzajac uzupelniajaca ilosc gazu do saturatora IB w zaleznosci od pH soku opuszczajacego saturator IB.Zaletami rozwiazania automatycznej regulacji procesu saturacji I wedlug wynalazku sa: - mozliwosc unikniecia duzych oscylacji alkalicznosci soku wysaturowanego przez zmniejszenie bezwladnosci ukladu i opóznienia czasowego, - lepszy efekt oczyszczania soków dzieki poprawie dokladnosci regulacji alkalicznosci soku wyjsciowego.1 70 582 Na rysunku przedstawiono sposób regulacji doplywu gazu w procesie saturowania soku cukrowniczego wedlug wynalazku dla uzyskania stalej zadanej wartosci pH przy pracy w dwunaczyniowym szeregowym zesta¬ wie saturatorów. Uklad sklada sie z nastepujacych obwodów: obwodu regulacji stosunku natezenia doplywu gazu do natezenia doplywu soku- regulator 1 oraz ebwodu regulacji pH soku wyplywajacego z naczynia IB- - regulator 2.Uklad pracuje nastepujaco: regulator 1 -na podstawie pomiaru natezenia doplywu soku 3, natezenia doplywu gazu 4 oraz zadanego stosunku tych natezen przeplywów - zmienia natezenie doplywu gazu 5. Stosu¬ nek natezenia doplywu gazu do natezenia doplywu soku jest dobierany w ten sposób aby do naczynia IA dopro¬ wadzic 70% obliczonej ilosci gazu. Regulator 2- na podstawie pomiaru pH soku na wyplywie z naczynia IB 6 oraz zadanej wartosci pH- zmienia natezenie doplywu gazu do naczynia IB 7. PL PLDue to the large inertia of the juice mass and the time lag, such a system in practice is subjected to continuous alkalinity oscillations in the range of several pH units. Another solution of the automatic control system had a pH meter regulating the gas supply to saturaqi I set between the saturators IA and IB, but it also did not work satisfactorily. The aim of the invention is to improve the efficiency of the regulation of the pH of the juice after saturaqiI by using a new system. The technical solution of the invention provides for two automatic circuits. regulation. The first task is to supply the main amount of saturation gas to the saturator IA in proportion to the amount of lime juice, i.e. to the amount of lime. The second circuit will perform the final precise correction by introducing a supplementary amount of gas to the IB saturator, depending on the pH of the juice leaving the IB saturator. better effect of juice purification due to the improvement of the accuracy of regulation of the alkalinity of the starting juice.1 70 582 The figure shows the method of gas flow regulation in the process of saturating sugar juice according to the invention in order to obtain a constant set pH value when working in a two-vessel serial set of saturators. The system consists of the following circuits: the control circuit of the ratio of the gas flow to the juice flow rate - controller 1 and the pH adjustment circuit of the juice flowing from the vessel IB - - controller 2. The system works as follows: controller 1 - on the basis of the juice flow intensity measurement 3, intensity gas flow 4 and the set ratio of these flow rates - changes the gas flow rate 5. The ratio of the gas flow rate to the juice flow rate is selected in such a way as to bring 70% of the calculated amount of gas to the vessel IA. The regulator 2-, based on the measurement of the pH of the juice at the outlet from the IB 6 vessel and the set pH value, changes the gas flow to the IB 7. EN EN

Claims

1. Claims 1. Method of carbonate saturation of sugar juice carried out in a two-chamber set of saturators with saturation gas, characterized in that the automatic adjustment of the alkalinity of the starting juice is performed in two stages with the use of two automatic saturation gas dosing circuits.

2. The method according to claim The method of claim 1, characterized in that in the first circuit the main amount of saturation gas is dosed in an insufficient amount of dcrsaturator IA in proportion to the amount of calcified juice.

3. The method according to p. 1 and 2, characterized that the supplementary amount of saturation gas is added to the saturator IB depending on the pH of the juice leaving the saturator IB. Wash. Typographer. UP PRL. residing 448/7

4. Mintage 120 + 18, Price PLN 10. PL PL