The element of the random packing for packed columns
(57) Abstract:The invention relates to the chemical, refining and other industries and can be used when performing heat-exchange processes, such as distillation, absorption, etc. in the respective apparatuses. The technical problem solved by the invention is to increase the intensity of heat and mass transfer and reduce costs in manufacturing. The solution of a task carried out by the fact that the element of the random packing for Packed columns containing thin-walled perforated ring with flanging and expanded metal, bent into the ring, curved petals, according to the invention, the flange is made with shaped, symmetrical, for example, a toothed profile, formed by profile shaped elements of both flanging mutually shifted by a half pitch between the adjacent figure elements of one of the flanging. 3 Il. The invention relates to the chemical, refining and other industries and can be used in the implementation of heat and mass transfer processes, such as distillation, absorption, etc. in the respective devices.From level technicalities etc. on the surface which made holes in the form of slots, with a folded inside the housing petals having a different shape, for example curved (see an overview of Foreign nozzle devices of mass transfer equipment. M. Containertypes, 1982, S. 4 5 Fig. 3, 4).For all elements of the above nozzles, related by way of laying to irregular (bulk) nozzles typical (depending on the shape forming elements is cylindrical, semi-cylindrical, a saddle-node) various hydraulic resistance and the efficiency of mass transfer.A prototype of the invention selected nozzle according to the patent of Russian Federation N 2027504, class B 01 J 19/30, 1995, containing thin-walled perforated ring with flanging and cutting elements in the form of bent inside the ring bent around the circumference of the petals.The disadvantages of the prototype is that the packing layer when working in the field of flanging stagnant zones are formed, due to the lack of flanging any holes or shaped protrusions. This reduces the efficiency of the nozzle.The technical problem solved by the invention is to increase the intensity of heat and mass transfer and the regular nozzle for Packed columns, containing thin-walled perforated ring with flanging and expanded metal, bent into the ring, curved petals, according to the invention the flange is made with shaped, symmetrical, for example a toothed profile, formed by profile shaped elements of both flanging mutually shifted by a half pitch between the adjacent figure elements of one of the flanging.The presence of flanging in the form of shaped elements, their shape and arrangement increases the contact surface and the living section, helping to increase the effectiveness of interaction between phases, increasing the magnitude of the interfacial friction and the degree of turbulence, resulting in the proposed nozzle can operate at much higher loads. In addition, the offset figure of opposite flanging ring half step, allows to reduce significantly in the manufacture of material consumption due to the economical cutting of the blank.In Fig. 1 shows a nozzle, a top view; Fig. 2 is a longitudinal section; Fig. 3 scan head.The nozzle ring contains 1 flanging 2, the contours of which are made with curly, for example a toothed profile, forming a figure symmetric surname elements of one of the flanging. The side surface of the ring 1 has a counter located triangular petals 4, the base of the petals combined into a single number, between every pairs of petals jumper 5. Petals 4 and jumpers have 5 holes 6 with the same or different diameters. Petals 4 smooth radius bent to the inside of the ring 1, after bending of the petals on the line section, which coincides with the hypotenuse, there is a gap of 7 with a width "a". Bent petals 4 jumper 5 in plan form a semiring 8.The nozzle operates as follows. After filling apparatus nozzle and feed him interacting phases, the liquid phase, passing through the nozzle, intensively sprayed, is redistributed to the diameter of the device, interacting on the surface elements of the nozzle with the rising steam (gas) phase.Increased by curly flanging, the specific surface of the nozzle, the optimal location of figured elements flanging (prekrytie forward stroke gas along a generatrix of the cylindrical surface of the ring)6 promotes more intensive teplomassoobmena due to the constant updating of the interfacial surface. In the manufacture of the nozzle, the offset of the figure elements of the opposed curved edges (which are then transformed into flanging).The nozzle of the proposed elements has a higher efficiency and a greater range of work load, as well as a higher fill factor volume of the apparatus. The element of the random packing for Packed columns containing thin-walled perforated ring with flanging and with an expanded metal bent into the ring, curved petals, characterized in that the flange is made with curly symmetric, such as a gear, a profile, formed by profile shaped elements of both flanging mutually shifted by a half pitch between the adjacent figure elements of one of the flanging.
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