Device for degassing melts or hot mixtures

FIELD: continuous-operation equipment for manufacture of mineral fertilizers; evacuation of residual gases contained in melts or hot mixtures.

SUBSTANCE: proposed device is made in form of vertical reservoir of round cross section which is provided with upper cover and branch pipes for evacuation of gases, delivery of melt or hot mixture and discharge of degassed melt of hot mixture; cylinder mounted in center of reservoir has branch pipe for delivery of melt or hot mixture; upper part of cylinder is provided with cone; disk mounted inside cylinder is rigidly connected with vibration drive through rod; it is provided with holes, 0.85 to 0.95 of diameter of cylinder which are located at distance of 0.1-0.5 of disk diameter from upper edge of cylinder.

EFFECT: enhanced efficiency; possibility of complete evacuation of gases from melt or hot mixture.

3 cl, 2 dwg

 

The invention relates to equipment continuous operation for the production of mineral fertilizers and other chemical industries. It can be used for degassing of residual gases in the Plav or different hot mixes.

Known installation continuous cooking liquid nitrogen fertilizers. In this setting, known degasser mixture made in the form of a vertical tank round cross-section with a pipe in the middle part for receiving hot mix, with the upper pipe for exhaust gases and with the lower pipe for output degassed mixture. (patent RF №2088555).

In the specified device pipe supply hot mix placed in the Central part of the tank, the upper part of which is evacuated space associated with the nozzle exhaust gases. However, in this device the selection of these gases is difficult due to the fact that the surface of a flowing stream of a mixture of this pipe is determined only by the cross-sectional area of his pipe. Minor surface contact with a flowing stream of a mixture with a sparse space limits the possibilities of this device.

Known vibratory mixing device comprising a perforated disk with comodality deployme nozzles connected with the drive of the reciprocating postupatelno the movement (A.S. The USSR №1592026).

The specified device is designed for intensive mixing of fluids with different components, and the drive it was installed under a large layer of liquid so that turbulent flow over its surface must not occur.

The objective of the invention is to maximize the removal of residual gases from the melt or hot mix. Residual gases, for example, in the melt of urea before granulation consist of ammonia, carbon dioxide and water vapor. The percentage of these gases is negligible and ranges from 0.005 to 0.04%. When the granulation due to crystallization of the melt, increasing the pressure of the gas inside the granules and under certain storage conditions, they tear it to pieces. Produces a lot of dust, and the escaping gases pollute the atmosphere. Removing at least 30% of the emissions from this interval dramatically increases the strength of granules and improves the storage process.

This objective is achieved in that in the center of the tank cylinder, which introduced the pipe supplying water or hot mixture in the upper part of the cylinder in the direction of the vessel wall fixed cone and inside the cylinder, a disk rigidly connected through a rod with vibrooccasion, perforated nozzle orifices with a diameter of 0,85-0,95 on the diameter of the cylinder and at a distance of 0.1-0.5 of the diameter of the disk.

1 shows a device for degase the AI afloat and hot mixes.

The device has a capacity of 1 with the cover 2. In the center of the tank cylinder 3 with a pipe 4 for supplying thereto of water or hot mixtures. The device is covered with insulation 5. Between the cylinder and cap space 5 formed with the exhaust gas discharge pipe 6. On the cylinder in the direction of the vessel wall fixed cone 7. Inside the cylinder, the disk 8, the perforated nozzle orifices, a wide portion of the nozzle which is directed downward. The disk diameter is 0.85-0.95 to the diameter of the cylinder. The drive is installed from the top edge of the cylinder at a distance of 0.1-0.5 diameter is rigidly connected through a rod 9 with vibrooccasion 10. Degassed product is discharged into the space between the cylinders through the pipe 11. In the lower part of the cylinder is made the hole 12. The diameter of the disk within 0,85-0,95 on the diameter of the cylinder is selected to provide the largest area of pumping water or hot mixture through the nozzle disk and to enable in the cylinder the water to circulate freely and to have a good exchange with newly arriving by water. The distance of the disk from the surface of the cylinder selected in the range of 0.1-0.5 of the diameter of the disk, justified by the fact that when the distance is less than 0.1 of the diameter of the disc height of the jet flow will be too high and this will lead to the entrainment of the product together with the exhaust gases, and at a distance of more than 0.5 of the diameter of the disk page is any flow will be insufficient and the release of gases will be difficult.

The device operates as follows.

The water enters the device through the pipe 4 into the inner cylinder 3. When you enable vibrooccasion disk 8 begins to perform a reciprocating motion and forces through the nozzle, the melt flowing into the cylinder. While on the surface of the cylinder occurs swirling flow, consisting of a vibrating with a frequency of 50 Hz jets coming out of the nozzle disc, and flows down the cone 7 in the space between the cylinders. Bubbling streams vibrating jets facilitate quick and easy removal of residual gases from the water or the hot mixture into the evacuated space between the disk and the outlet gases pipe 6.

Degassed melt or hot mixture is drained through the pipe 11. When the stop process, the remaining water or hot mixture is drained through the hole 12.

The above-described device for creating turbulent flow uses vibropressovoe device is connected with vibrooccasion consuming some power. If the supply of water or hot mix pressure generated by the pump is sufficient, the device swirling flow can be created due to the pressure.

This objective is achieved in that in the center of the tank cylinder, which introduced the pipe supplying water or hot mixture in the upper part of the cylinder in the side wall eating the spine of the fixed cone, and on top of the cylinder, a disk with lots of tubes, the height of which above the disk is 2-5 diameter of these tubes. To obtain turbulent flow within each of the tubes has a swirl flow.

Figure 2 shows a device for degassing afloat and hot mixes.

The device has a capacity of 1 with the cover 2. In the center of the tank cylinder 3 with a pipe 4 for supplying thereto of water or hot mixtures. The device is covered with insulation 5. Between the cylinder and cap space formed with the exhaust gas discharge pipe 6. On the cylinder in the direction of the vessel wall fixed cone 7. On top of the cylinder, the disk 8 with lots of tubes 9, the height of which above the disk is 2-5 size of the diameter of these tubes, and inside each of them has swirl 10. The height of the tubes 2 to 5 diameter of these tubes due to the fact that the disk in the direction of the cone will merge the thread height of not less than the diameter of the tube, and therefore the height of two diameter selected due to the fact that discharge on the surface of the tube carefully carried out, and the height of the tubes over their five diameters impractical because of the greater resistance to flow inside the tube. Degassed product is discharged into the space between the cylinders through the pipe 11. In the lower part of the cylinder is made the hole 12.

The device operates following the m way.

The water enters the device through the pipe 4 and through many tubes 9, in which the flow of acquiring a swirling motion, shimmers on the surface on the disk 8 and flows down the cone 7 in the space between the cylinders. Swirling streams flowing through the branched surface of the tube, disc and cone, facilitate quick and easy removal of residual gases from the water or the hot mixture into the evacuated space between the drive tube and outlet gases pipe 6. Degassed melt or hot mixture is drained through the pipe 11. When stopping the whole process water or the hot mixture is poured off through the hole 12.

1. Device for degassing of the melt or hot mix, made in the form of a vertical tank round cross-section with the top cover and nozzles for exhaust gases, the supply of water or hot mix and output of degassed water or hot mixture, characterized in that in the center of the tank cylinder, which introduced the pipe supplying water or hot mixture in the upper part of the cylinder in the direction of the vessel wall fixed cone and inside the cylinder, a disk rigidly connected through a rod with vibrooccasion, perforated nozzle orifices with a diameter of 0.85-0.95 diameter of the cylinder and at a distance from the upper edge of the cylinder is 0.1-0.5 diameter of the disk.

2. Device for degassing PL is VA or hot mix, made in the form of a vertical tank round cross-section with the top cover and nozzles for exhaust gases, the supply of water or hot mix and output of degassed water or hot mixture, characterized in that in the center of the tank cylinder, which introduced the pipe supplying water or hot mixture in the upper part of the cylinder in the direction of the vessel wall fixed cone, and the top of the cylinder, a disk with lots of tubes, the height of which above the disk from 2 to 5 diameter of these tubes.

3. The device according to claim 2, characterized in that within each of the tubes has a swirl flow.



 

Same patents:

FIELD: mineral fertilizers.

SUBSTANCE: waste water intended to be utilized as fertilizer is diluted with water to content of urea peroxyhydrate 0.1-1.5% for leaf-feeding of plants and to 10-50% of urea peroxyhydrate for root nutrition of plants.

EFFECT: utilized nutritive, fungicidal, and nematocidal properties of waste waters.

5 tbl

FIELD: agriculture, in particular plant production.

SUBSTANCE: method of present invention includes utilization of urea hydroperoxide as nitrogenous fertilizer with nematocide and fungicide properties. Fertilizer of present invention also is useful in plant protection against diseases and blasts, such as potato-root eelworm and gall-root eelworm.

EFFECT: increased soil microbiological activity and fertility.

8 tbl, 8 ex

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3 cl, 1 dwg

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13 cl, 2 dwg

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3 cl, 1 dwg

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2 cl, 1 dwg

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2 tbl

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1 dwg

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1 dwg

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