SU1425202A1 - Installation for removing solvent from ground oil-cake - Google Patents

Abstract

The invention relates to equipment for the oil and fat industry, specifically to devices for evaporation of the solvent from the meal. The goal is to increase productivity by ensuring that the steam is evenly supplied and the secondary vapor is removed. The collector for the supply of hot water vapor is located inside the tanks with a gap along the wall above the bottom and is complete as part of a toroid with a ratio of the lengths of the collector and the circumference of the side wall of the tank equal to (0.40-0.60): 1. The height of the collector 7 above the bottom of the tank is 0.25-0.30 of its diameter. The body of the collector is located diametrically opposite to the branch pipe of secondary vapor removal, and the outlet openings 10 are made in such a way that their axes are directed to the branch pipe of secondary vapor removal. 1 hp ff, 2 ill. (L

Description

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FIG. 2

The invention relates to equipment for the oil and fat industry, namely, devices for evaporation of the solvent from the meal.

The purpose of the invention is to increase productivity by ensuring that the steam supply is even and the secondary vapor is discharged.

Placement in each tank of the collector, made in the water part of the toroid with openings for the exit of the steam, oriented toward the branch pipe of the secondary vapor discharge, which is installed diametrically opposite to the collector, ensures uniform directional movement of the steam in the tanks, which reduces the time processing meal.

Figure 1 shows a device in common; figure 2 - section aa in Fig, 1,

j The unit consists of a vertical i cylindrical body 1, along the I side there are 2 tanks 2 with heated bottoms 3 and shells 4. Inside the core; there is a drive shaft 5 on which the double-blade agitators 6 are mounted. Inside the tank there is a dial; Lecturer 7 for the introduction of hot water vapor into the tank, so that the ratio of the height of the location of the collector above the bottom 3 of the tank 2 and the diameter of its shell is 0.25-0.30. The collector 7 is made as part of a toroid and is located inside the tanks 2 with a gap along it. the walls of the shell 4, the ratio of the lengths of the collector 7 and the circumference of the side wall of the shell 4 is (0.40-0.60): 1. The body of the collector 7 is located diametrically opposed to the relative branch pipe 8 of the secondary vapor removal. In this case, the steam supply pipe 9 and the steam discharge pipe 8 do not necessarily have to be diametrically opposed on the shells of 4 tanks 2. The collector 7 has apertures 10 for the steam output, additional outlets 11 for the steam are also on the end surfaces x collector 7.

The axis of the holes 10 for the release of steam from the collector 7 is directed towards the pipe 8 for the discharge of secondary vapors. In the upper part of the housing 1 is located the loading device, and in the lower discharge.

The meal is bypassed from one vat to another by means of reloading shafts 12.

The installation works as follows.

An oily extractable material (meal) is loaded into the housing 1 through a loading device. The solvent is distilled off due to the heat of the deaf water vapor sent to the bottoms 3 and the shell 4 of the tanks 2, as well as due to the effect of the acute water vapor supplied to the tanks 2 through the nozzles 9 supplying the steam to the collectors 7. water vapor plays the role of separating the gaseous component and reducing the partial pressure of the solvent over the material and thus accelerating the distillation process. The stirring of the layer of meal in vats 2 is carried out by rotating the blades of the agitators 6, - In order to organize a stable removal of secondary vapors from the device, the branch pipes 8 of the secondary vapor can be attached to the vacuum line. The processed meal passes successively through all the vats 2 and then is discharged through the loading device.

The directional removal of secondary vapors from tank 2 eliminates the creation of mass transfer resistance during stripping from the vapor phase and thereby accelerates the stripping process.

The execution of the collector 7 in the form of a toroid with a ratio of the length of the collector and the circumference of the side wall of the tank

„(0.40-0.60)

2. - -t- provides

the even distribution of the flow of sharp tsar over the entire area of the bottom 3 and at the same time eliminates the formation of stagnant zones of vapor in the vapor phase, which contributes to the acceleration of the distillation process. When the specified ratio is less than 0.40, the formation of stagnant vapor zones occurs near the end surfaces of the collector 7 due to its insufficient length. The presence of stagnant zones reduces the evaporation rate of the solvent and leads to an increase in the concentration of gasoline in the finished product. When the ratios of the lengths of the collector 7 and the circumference of the side wall are more than 0.60, stable vapor zones are formed near the end portions of the front surface of the collector 7,

At the same time, at ratios of the height of the collector 7 and the diameter of the tank 2 of 0.25-0.30, the sharp steam is distributed in close proximity to the surface of the meal layer, due to which the partial pressure of solvent vapors is lowered and the process is significantly intensified. distillation.

When the ratio of the height of the location of the collector 7 and the diameter of the tank 2 is less than 0.25, the through-holes 10 of the collector 7 are located under the layer of the meal. As a result, the mode of supply and distribution of the steam in the tank 2 is impaired, the partial pressure of solvent vapors above the meal is eliminated, and the secondary vapor discharge from the tank 2 is eliminated due to the kinetic energy of the jets of sharp steam. All this leads to a decrease in the intensity of evaporation of the solvent and an increase in its residual content in the meal.

At ratios of over 0.30, the efficiency of the collector -7 decreases, since solvent vapors directly above the meal layer are deprived of contact with the live steam leaving the collector 7 because of its excessively high position above the bottom 3. As a result The partial pressure of the solvent vapor above the surface of the meal layer, which is the evaporation surface, is increased, and the intensity of the distillation is slowed down.

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Formula 1

Claims (2)

1. Installation to remove the solvent from the meal, which includes a vertical cylindrical body with a Russian located in it tanks with overload shafts and heated bottoms, a drive shaft with agitators located in each tank, loading and unloading devices for the meal, pipes for supplying steam with a collector having openings for the steam outlet and secondary vapor removal, characterized in that, in order to increase productivity by ensuring the possibility of uniform supply of the vapor and removal of volts oriental vapors, it is equipped with additional collectors and branch pipes for discharging secondary vapors located diametrically opposite one another in each of the tanks, each collector is made as part of a toroid placed horizontally with a gap along the wall of the tank, and the holes in the collector are filled in its internal wall so that the axis of each of the holes is directed towards the branch pipe of the secondary vapor discharge, and the ratio of the length of the collector to the circumference of the side wall of the tank is (0.4-0.6): 1. 2. Installation according to claim 1, about t l and h a-yu shch so that the collector is installed above the bottom of the tank at a height equal to 0.25-0.3 of its diameter. 8mopttvfft / ff ftapbi Ulpom Shchro / p , - dstry / fap 1