Process for sorbent obtaining

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Description:

The invention refers! in the food industry !, especially in a process of obtaining sorbent for the clearing and stabilization of juices, musts and wines.

The process of obtaining the sorbent from the gelatine mixture of zeolites and glass is known! liquid !, which passes through an oil layer with its destruction in the form particles! spheroidal, after all! which is treated with chloride solution! of sodium and is sedimented! [1].

The disadvantage of the procedure is! in that c! for destruction, material costs caused by the expensive use of special chemical reagents are required.

The process of obtaining the clay sorbent is still known! by Palagorskit, which includes drying, grinding, selection, mechanical cleaning, grinding, two-step crushing and shaving. At more than 25% humidity, the clay clay dries! Then mix! with water until the moisture of the plasticized mass, after! which is granulated, dries! in airflow at 200 ... 300 ° C. The dry sorbent is mechanically cleaned and dispersed! [2].

The disadvantages of the process are the additional costs for the materials obtained from the preliminary processing! of the clay for forming the laminated mass and using the expensive equipment for dispersing, preliminary drying !, mechanical cleaning! and sifting.

Also known is the sorbent filling process, which includes heat treatment! of the clay in the presence of the chemical agent such as the amiaco at a mass ratio! clay! : 1: 0.0R0.15 ammonia in autoclave! at 150 ... 190 ° C for 4-5 hours [3].

The aforementioned sorbent is used! for the cleaning of water, fuel, oil, it does not take into account the particularities of the wine and cannot be used to clarify and stabilize the wine products.

Closer to the technical essence! is the procedure for treating clinoptilolite, which consists! from its grinding to a dispersion of 100 ... 400 mm, treatment with hydrochloric acid solution of 0.25 ... 0.5 N at a solution ratio: clinoptilolite 15: 1, mixing for 3 hours at 100 ° C, washing with water! distilled!, drying for 3 hours at 100 ° C, granulation until dispersion of 0.25 ... 5.0 mm and preliminary activation! in air flow at the temperature of

300 .., 450 ° C for 1 ... 4 hours.

The process is complicated, expensive, requires large amounts of hydrochloric acid.

The problem solved by the present invention is to obtain an efferent sorbent with high sorption capacity and enhanced qualities of the finished product.

The process according to the invention removes the disadvantages mentioned above by that c! const! in the shredding of the natural clay mineral, its treatment with a chemical agent, the drying of the sorbent and its dispersion. The proposed process involves drying the ore up to 8 ... 10% humidity before grinding. As a chemical agent it is used! solufie apoas! carbonate sodium carbonate

20 .. .25% at a mineral ratio: solution of 1.5 ... 1.6: 0.9 ... 1.0 for 4 ... 5 days at the same time! the sorbent dries! at a temperature of 119 ... 125 ° C, and its dispersion is carried out! up to 0.1 mm.

The result of the requested process is the obtaining of the sorbent with high capacity! sorption and increase the quality of the finished product.

The comparative characteristics of the sorbent obtained and according to OCT 18-49-71 "Бентониты для винодельческой промышленности" are shown in table 1

Table 1

<td rowspan="2">Name of indices</td><td colspan="2">sorbent</td>

<td>according to OCT 18-4971</td><td>according to the requested procedure</td>

<td>Exterior aspect</td><td>from sober to beige, fine dispersion!</td><td>sur powder color! with fine dispersion! to a degree up to 0.1 mm</td>

<td>Swelling,%</td><td>no smaller! of 90.0</td><td> 100,0</td>

<td>pH of aqueous suspension</td><td>not more than 9.0</td><td> 9,8</td>

<td>Absorption of protein substances,% ''</td><td>no smaller! of 25.0</td><td> 38,0</td>

<td>Calcium content, mg / 100 g</td><td>not more than 60.0</td><td> 240,0</td>

<td>Arsenic content, mg / 100 g</td><td>missing</td><td>missing</td>

<td>Sand and inclusions with large dispersed granules,%</td><td>not more than 1,0</td><td>missing</td>

The procedure is performed as follows:

In industrial processing units, equipped with the respective industrial equipment, the clay mineral is air-dried to 8 ... 10% humidity, then minced to 20 mm particle size and treated with aqueous sodium carbonate solution. 20 ... 25% at a mineral ratio: solution

1.5..1,6: 0.9 ... 1.0. The mixture obtained is homogenized, left for impregnation for 4-5 days, then dried at 119-125 ° C for 4-5 hours. With the help of crushers the obtained sorbent disperses to the particle size of 0.1 mm.

Example 1. The clay mineral Carasor from Kazakhstan (montmorillonite, kaolinite, hydromics) in the amount of 1 kg was dried to 8% humidity. It was ground into a mill to the size of 20 mm particles.

Previously a 20% aqueous solution of sodium carbonate was prepared and administered in the mined mineral at a mineral ratio: solution 1.5 ... 0.9, it was thoroughly kneaded and kept for impregnation for 4 days. The obtained sorbent was dried in the oven at 119 ° C for 4 ... 5 hours and dispersed to a particle size of 0.1 mm.

The sorbent suspension was prepared with which the dry white wine "Aligote" was treated unstable at protein breaks. In cylinders with wine of 100 cm each³ Previously prepared increasing doses of sorbent suspension were administered: 0.25 ... 0.5: 1.0 ... 1.5, which correspond to concentrations of: 0.5 ... 1.0. ..2.0 ... 3.0 g / dm³ and they mixed. After clearing the samples that lasted 4 hours they were filtered, then tested against protein breaks (tab. 2).

Table 2

<td>Various achievements</td><td>The dose administered by the sorbent, g / dm³</td><td>Testing for protein scrap</td><td>Albumin concentration, mg / dm³</td>

<td> 1</td><td> 0,5</td><td>unreliable</td><td> 26,0</td>

<td> 2</td><td>it a</td><td>unreliable</td><td> 16,0</td>

<td> 3</td><td> 2,0</td><td>stable</td><td> 8,0</td>

<td> 4</td><td> 3,0</td><td>stable</td><td> 4,0</td>

Example 2. The clay mineral Carasor from Kazakhstan (montmorillonite, kaolinite, hydromics) in the amount of 1 kg was dried up to 10% humidity and minced as in ex. 1.

A 25% aqueous sodium carbonate solution was prepared and administered in the mined mineral at a mineral ratio: 1.6: 1.0 solution, mixed and left to soak for 5 days.

The obtained sorbent was dried at 125 ° C for 5 hours and dispersed to a particle size of 0.1 mm.

The red wine of superior quality “Cabernet” unstable at the protein cassettes was treated with similar suspension doses of sorbent eg. 1.

The obtained results are presented in the tab. 3.

'Table 3

<td>Various achievements</td><td>The dose administered by the sorbent, g / dm³</td><td>Testing for protein scrap</td><td>Albumin concentration, mg / dm³</td>

<td> 1</td><td>control</td><td>unreliable</td><td> 16,2</td>

<td> 2</td><td> 0,5</td><td>unreliable</td><td> 10,2</td>

<td> 3</td><td>it a</td><td>stable</td><td> 8,0</td>

<td> 4</td><td> 2,0</td><td>stable</td><td> 6,0</td>

<td> 5</td><td> 3,0</td><td>stable</td><td> 5,4</td>