SU557103A1 - Method for automatic control of hydrolysis process - Google Patents

Description

one

The invention relates to the field of the biochemical industry, more specifically to hydrolysis production, and relates to a method for automatically controlling the hydrolysis process.

Methods are known for controlling the hydrolysis process by means of software control l.

Of the known methods of automatic control of the hydrolysis process, the closest to the invention is the method of control using software supply control knobs for cooking boil-cooking gtr and removing hydrolyzate 2.

The disadvantage of the STOto method of controlling the hydrolysis process is low efficiency. Especially this disadvantage occurs when the loaded raw material is poorly filtered. This leads to an increase in pressure drop between the upper and lower levels of the filtering layer, as a result of which its hydrodynamic resistance increases, accumulation of the cooking liquid in the hydrolysis unit and loss of sugars occurs.

The aim of the invention is to increase

control efficiency and hydrolysis apparatus productivity.

To achieve this goal, the regulation of the supply of cooking liquor and removal of the hydrolyzate is carried out simultaneously, depending on the magnitude of the mismatch between the set and the current value of the differential pressure between the upper and lower levels of the filter bed in the hydrolysis apparatus.

The drawing shows a diagram of the device, where the following is shown: hydrolyzer 1, pressure sensors 2.3, block 4 comparisons, signal divider 5, regulators 6.7, actuators 8.9, dampers 10.11 mounted on the cooking liquid supply lines 12 and dispensing hydrolyzate 13.

As a control signal, they receive a differential pressure signal between the upper and lower levels of the filter layer, then divide it into two independent signals proportional to the differential pressure, one of which is used to regulate the flow of cooking liquor and the other to regulate the flow of the hydrolyzate.

Claims (2)

Signals proportional to the magnitude of the pressure difference between the upper and lower levels of the filter layer in the hydrolysis apparatus 1, measured by sensors 2, 3, go to block 4 of the comparison. After comparison, the output of block 4 receives a signal proportional to the pressure differential, which is fed to divider 5, where it is divided into two signals, which are fed to regulators b and 7. Regulators 6 and 7, in accordance with the incoming signal - JQ lamines, generate control signals by executing mechanisms 8 and 9, which, in turn, affect the dampers 10 and 11, installed on the supply lines of the cooking liquid 12 and the hydrolysis output. Ijj and 13. The main advantage of the proposed method is an increase in efficiency. control and productivity of the hydrolyzate by adjusting the flow of the fermentation fluid at the inlet and withdrawing the hydrolyzate from the output of the hydrolyzate. Claims The method of automatic control of the hydrolysis process, which involves adjusting the supply of cooking liquid and removal of hydrolyzate, characterized in that, in order to increase the efficiency of control and production of the hydraulic apparatus, control of the supply of cooking liquid and removal of hydrolyzate is carried out simultaneously depending on the magnitude of the error set and current value of pressure difference between the upper and lower levels of the filter layer in the hydrolysis apparatus, Sources of information, taken into account during the examination: 1. Korolkov I.I. Percolational hydrolysis of plant raw materials. M., 1968, p. 153. 2. Hydrolysis and chemical industry, 1971, No. 1. t2