Nozzle for mass - and heat exchangers
(57) Abstract:The nozzle used in the mass - and heat-exchange column apparatus used in the production of mineral fertilizers, chemical, gas, petrochemical and related industries. The design of the nozzle element is a hollow cylinder with the turbulent elements on its outer surface, made in the form of rectangular side branches with holes square shape and cutouts in the cylinder with a folded inside a rectangular elements perpendicular to the rectangular side branches. We offer the nozzle provides for the increase and development of the contact surface, volumetric growth density or uneven paving and interpenetration of elements and changes (turns) surface opportunities to improve the effectiveness of processes of heat and mass exchange. 2 Il. The invention relates to nozzles for mass and heat exchange column apparatus used in the production of mineral fertilizers, chemical, gas, petrochemical and related industries.Known nozzle for heat and mass transfer apparatus.with. 691171 B 01 J 19/30, the elements of which are flattened on the outer surface, and additional internal elements. This nozzle does not provide good heat and mass transfer, despite the complex structure, and a layer of such nozzles creates a high hydraulic resistance to the flow of gases. Technology of manufacturing of such nozzles is complex and does not justify the increase in efficiency is relatively high labor costs for its manufacture.The closest to the essential features is the nozzle for mass-transfer apparatus.with. 899105, 01 J 19/30, the element of which is a hollow cylinder with a folded inside tabs (fragments) of complex shape. Such elements are difficult to manufacture, they are flowing streams irrigating fluid do not sufficiently frequent and significant turns and changes of direction, so turbulization insufficient to ensure such efficiency of heat exchange, which would justify large labor in the manufacture of such nozzles. The layer composed of such elements, has a very large hydraulic resistance, which significantly increases the energy consumption when carrying out the processes of heat and mass transfer.The aim of the invention is to simplify the technology is of the surface of the nozzle element in the formation of channels of variable cross-section and change the form of the free volume of the nozzle.In Fig. 1 shows the nozzle element, the main view; Fig. 2 is a top view, Fig. 1.The nozzle is a hollow cylinder with the turbulent elements on its outer surface, made in the form of rectangular side branches with holes square shape and cutouts in the cylinder with a folded inside of it until the middle of the rectangular elements perpendicular to the rectangular side branches.Based on the features of construction, the nozzle operates as follows.When filling elements nozzles in a mass transfer column in bulk is only a partial Zapadnye individual elements of the nozzles in each other, which leads to the reduction of the volume of the Packed bodies and compaction. This contributes to the turbulization of the flow and efficiency of mass transfer.Implementation of the elements of the nozzle in accordance with the proposed design will allow, on the one hand, relatively low hydraulic resistance of the layer of the nozzle the flow of gases, moving generally upward mass transfer apparatus, and on the other hand, to ensure good contact (the turbulization and mixing with the liquid staceys the life supporting layer and it can be loaded on top of the nozzle with smaller elements, for example, a ring of Paal.When applying for an extension on top of the irrigation liquid phase, the latter is deposited on its upper surface, then as the film flows down the elements that makes the turns inside the volume of the cylinder. The liquid phase flows on the underlying layers of the nozzle, repeating movement thereon in the manner described above. When this is supplied from the bottom of gas-vapor phase, which wraps around the surface elements of the nozzle, and in film mode implements heat and mass transfer with the liquid phase.Thus, the proposed design of the nozzle provides for the increase and development of the contact surface, volumetric growth density or uneven paving and interpenetration of elements and changes (turns) surface opportunities to improve the effectiveness of processes of heat and mass transfer. This nozzle has a low hydraulic resistance and relatively simple methods of cooking. Nozzle for mass - and heat-exchange apparatus comprising a hollow cylinder with the turbulent elements located on the outer surface, characterized in that increases the surface elements of the nozzle by creating lateral branches with square cutouts and wew the new rectangular branches.
FIELD: chemical or physical processes.
SUBSTANCE: catalytic nozzle comprises central cord of the core of the fiber members made of polymeric fiber, e.g. capron, whose diameter exceeds the diameter of individual fiber members by a factor of two. Several fiber members of the nozzle are modified by catalyzers. The ratio of the modified and non-modified fibers is 1:2. The thrown fibers are primarily wound on the central cord, and then the noncorroding metallic cords are wound over the thrown fibers.
EFFECT: enhanced reliability.
1 cl, 1 dwg
FIELD: chemical industry; textile industry; food industry; light industry; other industries ; equipment of the wet dust separation.
SUBSTANCE: the invention is pertaining to the equipment of the wet dust separation and may be used in chemical, textile, food, light and other industries for purification of the dusty gases. The packed scrubber contains: the body with the fitting pipes for the dusty gas and the purified gas; the sprinkling device; the support gratings, between which there is the head; and the device for withdrawal of the slime. The head is made in the form of the hollow spheres, on the spherical surface of which there is the cut groove having in the cross-section perpendicular to the screw line the profile of "Berly saddle" or "Itallocks" saddle. The head can be made out of the porous polymeric materials, the glass, the porous rubber, the composite materials, timber, stainless steel, titanium alloys, precious metals. The technical result of the invention is the increased efficiency and reliability of the dust-catching process, and also reduction of the metal consumption and the vibroacoustic activity of the apparatus as a whole.
EFFECT: the invention ensures the increased efficiency and reliability of the dust-catching process, reduction of the metal consumption and the vibroacoustic activity of the apparatus as a whole.
3 cl, 4 dwg
FIELD: production of ceramic elements for packing.
SUBSTANCE: ceramic element (1, 6, 8) for packing is used as limiter for layers; it is made in form of bow-tie and has constant cross section along axis (1) and many through passages (5) which are parallel to direction of length (L). Proposed method consists in extrusion of mixture which contains one or several ceramic-forming components, sectionalizing of extruded mixture for forming sections and burning of sections for forming packing element. Packing is used for filling the columns where mass-transfer and heat-transfer processes are carried out.
EFFECT: enhanced efficiency.
15 cl, 6 dwg
FIELD: forming of elements for dumped packing used for filling columns for mass- and heat-exchange processes.
SUBSTANCE: axis of symmetry of proposed element lies in way of its length. Ratio of largest size perpendicular to length and defining diameter (D) of element to length (L) ranges from 2.7 to 4.5. Element has polygonal cross section with six sides and many internal partitions forming passages at triangular cross section.
EFFECT: possibility of obtaining optimal working parameters.
15 cl, 5 dwg
FIELD: chemical industry; other industries; production of the heads for the heat-mass-exchanging apparatuses.
SUBSTANCE: the invention is pertaining to the devices of heat-mass-exchanging apparatuses with the fluidized three-phase layer and may be used in chemical industry and other industries at purification of the gas bursts of the harmful gaseous components. The head for the heat-mass-exchanging apparatuses is made in the form of the torus produced out of the cylindrical component made out of the synthetic filaments by its twisting from one or two ends. The cylinder is made out of the longitudinal filaments fasten among themselves in the staggered order with formation of the longitudinal cells. At that the diameter of the head exceeds its height in 1.25-1.33 times, and the ratio of the cell height to the diameter of the head makes 0.25-0.3. At utilization of the head the gas-liquid layer is uniformly distributed in the operation volume of the apparatus, that predetermines the stable hydrodynamic situation. At that the mass exchanging process is intensified due to the highly developed surface and the strong turbulization of the gas-liquid layer.
EFFECT: the invention ensures the gas-liquid layer uniform distribution in the operation volume of the apparatus, the stable hydrodynamic situation, intensification of the mass-exchange process.
FIELD: chemical engineering.
SUBSTANCE: invention relates to design of fill0in heads for mass transfer apparatuses and it car be used in heat-mass transfer processes in liquid-vapor(gas) systems, for instance at rectification, absorption, desorption, distillation a dn other processes. Proposed head member for mass transfer apparatuses has cut elements curved to circle of side surface. According to invention, head member is made in form of parallel cylinders formed by cut elements arranged in rod height, curved to circle in turn, inside and outside. Cylinders are connected by bridges and are arranged relative to each other so that their diametral planes from side surface of regular polygonal prism.
EFFECT: increased efficiency of heat-mass transfer by increasing surface of phase contact owing to reduction of drop formation and uniform distribution of phase surface in volume of heat-mass transfer apparatus.
FIELD: chemical industry.
SUBSTANCE: method comprises mixing gas with a portion of the circulating gas-liquid mixture, bringing the mixture produced in a contact with the finally dispersed drops in the first stage and with liquid condensed on the nozzle members in the second stage, pumping the main portion of the gas-liquid mixture through the pipes to the top layer of the liquid, and entraining the remainder portion by means of vortex funnels toward the bottom liquid layer in the third stage. A portion of the mixture is directed to the recirculation, and the remainder portion is forced to contact with the drops of circulating liquid in the fourth stage. The final contact is produced in series in the nozzle chamber of the fifth stage, aeration towers, and bubbling chambers of the sixth stage. The sprinkling chamber of the first stage receives acoustic ultrasonic disperser provided with longitudinal ultrasonic wave ducts. The sprinkling chamber of the fourth stage receives the deflecting shields with a diameter of 30-80 mm made of interconnected cylinders of different diameters. The cylinders have longitudinal cuts from the bottom cylinder to the top cylinder and additional cuts in the cylinders. The members for charging the nozzle chambers in the second and fifth stages are made of balls with a diameter of 20-70 mm provided with six-nine hollows in the spherical surface whose axes intersect at the ball center. The thickness of the walls between the hollows decreases toward the ball center.
EFFECT: enhanced efficiency.
5 cl, 6 dwg
FIELD: chemical industry; petrochemical industry; oil-refining industry; oil-processing industry; gas-processing industry; metallurgical industry; by-product-coking industry; environmental protection; production and operation of the packed mass-exchange apparatuses for the "gas-liquid" systems.
SUBSTANCE: the invention is pertaining to the packed mass-exchange apparatuses for the "gas-liquid" systems and may find application in chemical, petrochemical, oil-and gas-processing industries, metallurgical industry and the by-product-coking industry, and also in the industrial ecology at purification of the flue gases and the ventilation emissions. The packed column contains the cylindrical body and the head made in the form of the multi-row located in it rings, the lateral surface of the rings of the head is bent along the circumference with R=0.08-0.1 m. The rings are vertically installed with the shift in the rows of the convex side towards the axis of the body of the packed column in such a manner, that the upper protruding edge of each ring of the lower row number is located inside the ring of the upper row. The technical result of the invention is the increased degree of the purification of the gases at the expense of intensification of the process of the mass-exchange between the gas and the liquid.
EFFECT: the invention ensures the increased degree of the purification of gases at the expense of intensification of the mass-exchange process between the gas and the liquid.
SUBSTANCE: invention relates to novel catalyst fillings containing physical mixture of catalytically active and catalytically inactive molded particles wherein catalytically inactive molded particles have rounded edges on their friction surfaces.
EFFECT: reduced mechanical wear inside catalytic filling and preserved low pressure drop over the filling.
FIELD: engines and pumps; chemistry.
SUBSTANCE: reactor system comprises reactor tube, which contains compressed layer of molded carrier material, which may include catalytic component. Molded carrier material, for instance, aluminium oxide, has geometric configuration of hollow cylinder. Catalyst contains silver. Hollow cylinder has ratio of rated length to rated external diameter from 0.5 to 2, and ratio of rated external diameter to rated internal diameter, which exceeds 2.7. Reactor system also has such combinations of reactor tube diameter and geometric parameters of molded catalyst carrier, which make it possible to produce compressed layer of catalyst in reaction system with high density of package with minimum pressure drop via compressed layer of catalyst.
EFFECT: higher efficiency.
21 cl, 7 dwg, 3 tbl, 7 ex