UA59232A - A method for saturation of defecation juice - Google Patents

Abstract

A method for saturation of defecation juice comprises carrying out the saturation process in two or more stages or at a gradual reducing the alkalinity introduction of the flocculant at the intermediary stage. The flocculant is introduced at the carbonization stage of 45-55 % at a quantity of 0.0001-0.0004 % to the juice mass, vapor is introduced at the second saturation stage at a quantity of 0.8-1.0 % to the juice mass.

Description

Description of the invention

The method refers to the sugar industry, namely to methods of saturating defecated juice in sectional 2 saturators.

A known method of saturating defecated juice |Logvin V.M. Intensification of the first saturation: Study. manual. - K., 1998. - P.213-214), which provides for carrying out saturation in a two-stage apparatus created by dividing the volume of a one-stage saturator;

Disadvantages of the method are a small degree of use of carbon dioxide and the effect of juice purification, low 70 filtration and sedimentation properties.

The closest technical solution is the method of saturating the defecated juice (AS Mo1500671 AIiY, Byul. ХО930 dated 15.08.89), which involves the introduction of a polyfunctional polyelectrolyte flocculant into the juice with a pH of 11.4-11.9 in the amount of 0.002-0.006 Fo to the mass of juice.

Disadvantages of the method - the sedimentation and filtration properties of the sediment in the juice are not sufficiently high saturation, 12 less juice cleaning effect, big win expensive chemical flocculant.

The invention is based on the task of creating a method of saturating defecated juice by maximally removing non-sugars due to the aggregation of sediment particles under the action of flocculants without a significant transition into the solution of non-sugars previously adsorbed on them, in order to ensure an increase in the quality of the juice and the sedimentation and filtration properties of the sediment of the juice and saturation.

The task is achieved by the fact that the method of saturating defecated juice involves carrying out the saturation process in two or more degrees or with a gradual decrease in alkalinity with the introduction of a flocculant at an intermediate stage, according to the invention, the flocculant is introduced at a degree of carbonation of calcium hydroxide 45-5595 in the amount of 0.0001- 0.000495 to the weight of the juice, the introduction of steam to the second degree of saturation in the amount of 0.8-1.090 to the weight of the juice. 29 The causal relationship between the proposed features and the technical result will be as follows. "

The introduction of magnofloc I T-27 flocculant into juice at a degree of carbonation of 45-5595 stabilizes small particles of calcium carbonate with a large sorption surface: the maximum amount of non-sugars is adsorbed on the formed particles of calcium carbonate CaСО»z. The action of a selective flocculant is more effective compared to a multifunctional flocculant. The introduction of a flocculant at a pH value above 11.4 gives large errors in the measurement; does not characterize the degree of carbonation, which can lead to the zone of gelation, therefore, the effectiveness of su introduction will be insignificant. The introduction of a flocculant at a degree of carbonation of 45-5595 reduces the surface tension of the juice, while the viscosity decreases. This leads to an increase in the speed of mass exchange processes during saturation, due to which the sedimentation and filtration properties of the sediment of the juice of the first saturation are increased and the cleaning effect is increased.

Introduction of steam to the second degree of saturation leads to a reduction of the negative effect of gel formation and the formation of cavitation effects that allow influencing the process of aggregation of sediment particles.

At a degree of carbonation of 45-55956, the introduction of a flocculant causes the aggregation of small particles with a greater number of adsorbed non-sugars. "

In addition, the use of a selective flocculant reduces the costs of expensive polyfunctional C flocculant. c To determine the optimal degree of carbonization, the experiments presented in the table were conducted. 1. ;" with |from introduced p

Ф with со 70 g» At the degree of carbonation of 4095, the sedimentation and filtration properties are not high (the sedimentation speed is 3.46 cm/min), the juice purification effect is insufficient, which confirms the fact that a small amount of calcium carbonate is formed, on which less non-sugars will be adsorbed juice 99 At the degree of carbonation of 6095, the indicators of the sedimentation rate and the cleaning effect practically do not differ from the values at the degree of carbonation of 5595. Therefore, the optimal option of 45-5595 degree of carbonation was chosen.

In order to determine the optimal amount of steam of the II body of the evaporation plant, experiments were also conducted with different amounts of steam. The results of the experiments are presented in the table. 2. 60 ol (ov (ov lo b5

Rate of subsidence, cm/min 3.2 ..3.7.38 39 39 -Д-

Based on the results of the experiments, it can be seen that the optimal amount of steam consumption will be in the range from 0.8 to 1.0 95 to the mass of juice. The amount of steam of 0.7 96 to the mass of juice gives low results, and the increase in the consumption of 9 steam in the amount of 1.1 95 to the mass of juice is impractical due to the fact that the indicators do not improve, only the consumption of steam increases.

The method is as follows.

The juice of the main defecation is introduced into the boiler "A". saturation, treated with saturation gas to a degree of carbonation of 5095. After the boiler "A", a selective flocculant is introduced into the control box in the amount of 0.0001-0.0004905 to the weight of the juice, after which the juice is sent to the boiler "B" | saturation, where it is treated with steam in the amount of 0.8-1.0 9o to the weight of the juice, at the exit from the boiler "B" the pH of the juice is maintained at 10.8-11.2.

We conducted experiments on the proposed method of saturation of defecated juice and the prototype.

Saturation is carried out according to the prototype as follows: the juice of the main defecation was injected into | section of the sectional saturator and treated with saturation gas, at a pH value of 11.6, flocculant is introduced in the amount of 0.00495 to the mass of juice (in the 1st section of the saturator) From the last 4 sections, the juice is removed at pH 10.8-11.2, filtered, carried out After saturation, filter.

The following indicators were obtained: the rate of sedimentation of juice sediment | saturation - 3.9 cm/min, content of calcium salts - 0.150 95 Sas, color - 134.0 units. wholesale density, cleaning effect - 35.8 90. 20 Examples of implementation of the method.

Example 1.

A sample of the juice of the main defecation is treated with saturation gas to a degree of carbonation of 5095. After that, magnofloc flocculant is introduced in the amount of 0.00005 9o to the weight of the juice. Then the juice is treated with steam in the amount of 0.9 95 to the weight of the juice and saturation gas to the pH of the juice 10.8-11.2. 25 « sia zo Fo sch (22)

In the table The results of experiments according to example 1 are presented, depending on the amount of introduced flocculant. WITH

From the data in the table. It can be seen that when the flocculant is introduced more than 0.000495 to the weight of the juice, there is no improvement in the indicators of the purified juice and only leads to additional costs of the flocculant.

The amount of flocculant less than 0.000195 to the weight of the juice is insufficient to carry out the saturation process. At the same time, desorption of non-sugars occurs, which causes a lower effect of juice purification. In addition, the filtration and sedimentation properties of the juice are the same as for the prototype. With t0 The proposed method of saturation of defecated juice allows to increase the cleaning effect by 3.1-3.9 units. c The results of the conducted experiments showed that when implementing the proposed method of saturation of defecated juice, a more complete removal of non-sugars from the juice is achieved, a decrease in the content of calcium salts, the amount of color, and the filtration and sedimentation properties of the juice sediment are improved | saturation, which ultimately leads to an increase in the effect of juice purification.

Claims (1)

The formula of the invention se) o The method of saturation of defecated juice, which includes carrying out the saturation process in two or more stages or d) 20 with a gradual decrease in alkalinity, the introduction of a flocculant at an intermediate stage, which differs in that the introduction of the flocculant is carried out at a degree of carbonation of 45-55 95 in the amount of 0.0001-0.0004 95 to the weight of the juice, with the introduction of steam to the second degree of saturation in the amount of 0.8-1.0 95 to the weight of the juice. Official bulletin "Industrial Property". Book 1 "Inventions, useful models, topographies of integrated 22 microcircuits", 2003, M 8, 15.08.2003. State Department of Intellectual Property of the Ministry of Education and Science of Ukraine. 60 b5