Orifice flow-overflow combined tank type liquid distributor
Technical field
The present invention relates to a kind of chemical tower trim apparatus, the orifice flow-overflow combined tank type liquid distributor in particularly a kind of Large Towers.
Background technology
Packed tower is widely used in many fields such as petrochemical industry, medicine, environmental protection.Major advantage is that pressure drop is low, efficient is high, flux is big etc.If but there is not good distributor, the superiority of new type high-efficient packing will be difficult to bring into play, even cause the rapid decline of separative efficiency and cause products of separated defective.Therefore, as the vitals in the packed tower, require distributor to have low, the anti-obstruction of good distribution effect, pressure drop, easily manufactured, cheap, easy for installation, and have higher operating flexibility and gas phase channel.
At present, in the packed tower common distributor to mainly contain tubular type, disc type, slot type and nozzle etc. several.Tank type liquid distributor has advantages such as structure is comparatively simple, easy for installation, pressure drop is little, has obtained using widely in various devices.In order to solve anti-blocking problem, the perforate of distributing slot often is designed to side-wall hole; And, can adopt the overflow-type open-celled structure for the dirtier occasion of material.
Groove type distributor belongs to the gravity type distributor, and is very high to the levelness requirement, and for big tower, making and installation difficulty are bigger, are difficult to degree of being up to the standard requirement.Counting for the distribution that guarantees filler simultaneously requires and guarantees liquid level on certain hole, and the aperture of distributing slot is generally less, for than foul system, is easy to cause the distribution hole plug.And overflow type perforate distribution consistency degree is relatively poor relatively, general less employing except that some special devices.
Opening the distribution hole or directly opening the distribution hole at the one-level trench bottom on the liquid-collecting box of tradition tank type liquid distributor one-level groove in groove not only is subjected to the restriction in perforate space, and causes the obstruction in distribution hole easily, causes bigger installation difficulty simultaneously; Tradition tank type liquid distributor secondary groove is opened aperture liquid is distributed on secondary groove sidewall, because the aperture is generally less, for than foul system, often result in blockage and the liquid distribution inequality.
Summary of the invention
The objective of the invention is to, overcome the deficiency that above-mentioned traditional tank type liquid distributor exists, a kind of orifice flow-overflow combined novel slot liquid distribution trough is provided.Characteristics of the present invention are, the mode that the fluid mode takes orifice flow to combine with overflow can guarantee the uniformity of hour liquid distribution of sprinkle density, possesses stronger performance of anti-blockage simultaneously.
Purpose of the present invention reaches by following measure:
A kind of orifice flow-overflow combined tank type liquid distributor, comprise one-level groove 1, one-level groove dashpot 2, support angle steel 3, secondary groove 5, secondary groove overflow launder 6, secondary groove linker 7 compositions, wherein be provided with dashpot in the one-level groove, dashpot is fixed in the one-level groove by supporting angle steel; The secondary groove is made up of a plurality of parallel distributing slots, is communicated with by linker between the secondary groove; Be located by connecting by connecting plate 8 between one-level groove and the secondary groove; One-level groove sidewall is opened distribution hole 9, and position of opening is corresponding with the secondary groove, and secondary groove lower sidewall is provided with distribution hole 10, and secondary groove distribution hole is outside equipped with overflow launder.
In order to concentrate liquid, better control flows to, and can open distribution hole 9 arranged outside at one-level groove sidewall has deflector 4, and the upper limb of deflector is fixed on the sidewall of one-level groove, and lower edge is deep in the secondary groove.
Described secondary groove linker 7 is connectivity slot or communicating pipe; , the secondary groove can be flat square groove or sharp kerve, between the secondary groove by being communicated with in twos connectivity slot or communicating pipe or all being communicated with.
The one-level groove is a square groove, can be a full-mesh groove, and the form of full-mesh can be various ways such as square full-mesh or polygon full-mesh, also can be a plurality of grooves, and a plurality of grooves can be separate, also can be communicated with by connectivity slot.One-level groove dashpot is a square groove, and the supporting angle steel by some is fixed in the one-level groove, and the dashpot weir can be the profile of tooth weir, also can be flat weir.
Described secondary groove distribution hole 10 is circular hole or delthyrium or arbitrary form.Described overflow launder is triangular groove, square groove or polygon groove, and the weir of overflow launder is flat weir or profile of tooth weir, the corresponding one or more secondary groove distributions of each overflow launder hole.
Described one-level groove distribution hole is circular hole or del hole, the corresponding setting in the quantity in one-level groove distribution hole and aperture with the secondary groove, and hole count is 1/4th of a secondary slotted eye number, the aperture is two times of secondary slot aperture.
Secondary groove sidewall has the distribution hole, distribution is added with overflow launder outside the hole, the distribution hole can be various ways such as circular hole or delthyrium, overflow launder can be forms such as triangular groove, square groove or polygon groove, the weir of overflow launder can be flat weir or profile of tooth weir, the position of overflow launder can exceed spout hole, also can be lower than spout hole, need add guiding devices such as mozzle or water conservancy diversion angle steel when being lower than spout hole.The corresponding one or more distributions of each overflow launder hole.The quantity in secondary groove distribution hole and aperture need count, design according to fluid flow, desired distribution condition such as liquid level and utilize the gravity type liquid distributor to determine with universal calculation equation.
Described deflector is open or semi-enclosed, corresponding one group of one-level groove distribution hole of every suit deflector and corresponding secondary groove.
Advantage of the present invention is: adopt the two-stage distributing slot, the one-level groove is the areole streaming, and goes into the secondary groove by the deflector water conservancy diversion, has not only avoided the restriction in perforate space, and is convenient to install; Secondary groove distribution hole is the orifice flow formula, keeps certain liquid level in the groove; The fluid mode is an overflow-type, adds overflow launder in the distribution hole, and liquid overflows through the overflow launder upper limb, can suitably strengthen or the diameter that reduces perforate guarantees the even distribution of liquid according to material properties.Higher liquid level in this distribution tank has been eliminated the bad distribution of large scale, and overflow fluid mode has increased to distribute greatly counts, thereby has guaranteed the uniformity of liquid distribution.The distribution hole count can suitably reduce, and the aperture can suitably be strengthened, thereby has strengthened the performance of anti-blockage of distributor.
Description of drawings
Fig. 1 orifice flow-overflow combined tank type liquid distributor front view;
Fig. 2 orifice flow-overflow combined tank type liquid distributor vertical view;
The orifice flow-overflow combined groove joint front view of Fig. 3;
The orifice flow-overflow combined groove joint vertical view of Fig. 4;
Fig. 5 secondary groove side perforate schematic diagram;
Wherein: 1-one-level groove, 2-one-level groove dashpot, 3-supporting angle steel, 4-deflector, 5-secondary groove, 6-secondary groove overflow launder, 7-secondary groove linker, 8-connecting plate, 9-one-level groove distribution hole, 10-secondary groove distribution hole
The specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
As depicted in figs. 1 and 2, orifice flow-overflow combined tank type liquid distributor of the present invention, mainly constitute by one-level groove 1 and secondary groove 5, add dashpot 2 in the one-level groove 1, dashpot 2 is fixed in the one-level groove by supporting angle steel 3, secondary groove 5 is made up of a plurality of parallel distributing slots, between the secondary groove by being communicated with in twos linker 7 or communicating pipe or all being communicated with.Connect and the location by connecting plate 8 between one-level groove 1 and the secondary groove 5.
As Fig. 3, Fig. 4, shown in Figure 5, one-level groove sidewall is opened distribution hole 9, and position of opening is corresponding with the secondary groove, and each group 9 outside, one-level groove distribution hole adds a cover deflector 4, and the upper limb of deflector 4 is fixed on the sidewall of one-level groove, and lower edge is deep in the secondary groove.Secondary groove lower sidewall has distribution hole 10, the secondary groove distribution hole 10 outer overflow launders 6 that are added with.
The liquid that flows down from pre-distributor pipe flows directly on the one-level groove dashpot 2, one-level groove dashpot is profile of tooth weir or flat weir, liquid flows in the one-level groove 1 through one-level groove dashpot 2 buffering backs, after in one-level groove 1, forming certain liquid level, flow out in one-level groove distribution hole 9 from one-level groove sidewall, collect the back via deflector 4 and flow in the secondary groove 5 all corresponding one group of deflector 4 of each secondary groove 5.
The liquid that flows down from deflector 4 enters secondary groove 5, and in secondary groove 5, form certain liquid level, under the gravity effect, liquid enters in the overflow launder 6 through secondary groove distribution hole 10, and overflow and descending from the downflow weir of overflow launder 6, the side of this overflow launder 6 and secondary groove 5 sidewalls weld together, and overflow launder 6 edges can be flat, profiles of tooth, or add one deck silk screen, each overflow launder 6 corresponding one or more secondary groove distributions hole 10 in the inboard.
The secondary groove distribution bore dia of orifice flow-overflow combined tank type liquid distributor can reach more than the 10mm, has increased performance of anti-blockage; Can keep certain liquid level in the secondary groove, thereby the overall distribution that has guaranteed full tower section is even; Overflow fluid mode makes each distributed points be diffused as multiple spot, has increased effective distribution and has counted to satisfy the filler requirement.
Therefore, compare with traditional structure, orifice flow-overflow combined tank type liquid distributor performance of anti-blockage of the present invention is good, cloth liquid is even, simple in structure, fabrication and installation are easy, is highly suitable in the major diameter packed tower and the tower of processing than foul system of little liquid spraying density.
The orifice flow-overflow combined tank type liquid distributor that the present invention proposes, be described by preferred embodiment, person skilled obviously can be in not breaking away from content of the present invention, spirit and scope to structure as herein described with equipment is changed or suitably change and combination, realize the technology of the present invention.Special needs to be pointed out is, the replacement that all are similar and change apparent to those skilled in the artly, they are regarded as being included in spirit of the present invention, scope and the content.