A multi-stage liquid distributor

Abstract

The present invention discloses a multi-stage liquid distributor, which includes a support beam, a support, a first-stage tank, a buffer tank, a distribution box, a second-stage tank, a buffer plate and a combination; a plurality of slot holes are formed at the bottom of each second-stage tank, and a combination is fixedly installed below each slot hole; the combination is composed of a sprinkler, a rib plate and a liquid receiving plate; the top of the sprinkler is fixed to the bottom of the second-stage tank; the liquid receiving plate is fixed to the inner wall of the sprinkler through the rib plate and is located inside the sprinkler; a plurality of ventilation holes are formed in the upper part of the side wall of the sprinkler along the circumferential direction for gas phase circulation, and a plurality of liquid distribution holes are formed in the lower part of the side wall along the circumferential direction for liquid phase circulation. The present invention realizes four-stage liquid distribution, increases the three-stage distribution of the liquid receiving plate and the four-stage distribution of the sprinkler, thereby greatly improving the efficiency of the desulfurization tower. The present invention has a large number of liquid distribution points and uniform distribution. The present invention has strong anti-blocking ability.

Description

Technical Field

[0001] The invention relates to the fields of coking, coal chemical industry, petrochemical industry and fine chemical industry, and in particular to a multi-stage liquid distributor. Background Art

[0002] In the fields of coking, coal chemical industry, fertilizer industry, etc., the desulfurization tower is a key equipment in the desulfurization section. Since the desulfurization liquid contains medium oil, dust and sulfur solid, long-term operation is very likely to cause blockage. In addition, the efficiency of the desulfurization tower is mainly affected by the distributor and filler. When the desulfurization tower is in operation, the amount of desulfurization liquid is large, and there are some common problems with the use of traditional distributors. For example, the use of traditional trough-type liquid distributors, due to the narrow secondary trough, causes a large gradient of the liquid level in the trough, resulting in uneven distribution of the liquid flowing out of the distribution holes on the side of the secondary trough; and the openings on the side of the secondary trough are small, which is easy to block the holes, causing liquid deviation and unsatisfactory desulfurization effect. For another example, the use of traditional trough-plate liquid distributors, which occupy a large space in the tower body, are heavy, have a small opening rate, are easy to block, and have uneven distribution of distribution points. The support beam of this distributor is generally an I-beam or H-beam beam, and the distribution holes cannot be opened on the upper part of the beam. There is no liquid in the filler directly below the beam, resulting in uneven distribution, thereby reducing the desulfurization efficiency.

[0003] In summary, the traditional distributors used in desulfurization towers generally have problems such as few liquid distribution points, uneven distribution, and easy clogging. Therefore, developing an efficient and anti-clogging distributor can significantly improve the efficiency of the desulfurization tower and reduce the subsequent maintenance costs. Summary of the invention

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a multi-stage liquid distributor, which is an efficient distribution device with multi-stage distribution, large liquid processing volume, multiple liquid distribution points and uniform distribution.

[0005] The technical solution of the present invention to solve the technical problem is to provide a multi-stage liquid distributor, characterized in that the distributor includes a support beam, a support, a primary tank, a buffer tank, a distribution box, a secondary tank, a buffer plate and an assembly;

[0006] The support is fixed on the inner side of the tower wall; both ends of the support beam are fixedly installed on their respective supports; a number of secondary troughs are fixedly installed on the bottom of the support beam;

[0007] At least one primary slot is fixedly installed on the top of all secondary slots; a buffer slot is provided in each primary slot; a plurality of distribution boxes are fixedly installed at the bottom of the primary slot; a plurality of distribution holes are opened at the bottom of each distribution box; a buffer plate is fixedly installed at a position opposite to the distribution box inside the secondary slot;

[0008] A number of slots are opened at the bottom of each secondary slot, and a component is fixedly installed below each slot; the component is composed of a sprayer, a rib plate and a liquid receiving plate; the top of the sprayer is fixed to the bottom of the secondary slot; the liquid receiving plate is fixed to the inner wall of the sprayer through the rib plate and is located inside the sprayer; a number of ventilation holes are circumferentially opened in the upper part of the side wall of the sprayer for gas phase circulation, and a number of liquid distribution holes are circumferentially opened in the lower part of the side wall for liquid phase circulation.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0010] (1) The present invention realizes four-stage liquid distribution. Compared with the traditional tray liquid distributor with only one-stage distribution and the trough-type liquid distributor with only two-stage distribution, in addition to the two-stage distribution of the primary slot and the secondary slot, the three-stage distribution of the liquid receiving plate and the four-stage distribution of the sprayer are also added, thereby greatly improving the efficiency of the desulfurization tower.

[0011] Through experimental research, it is found that by adopting the present invention, the efficiency of the desulfurization tower is increased by more than 20%.

[0012] (2) The present invention has a large number of liquid distribution points and uniform distribution. In view of the characteristic that the desulfurization liquid volume is very large during the operation of the desulfurization tower, by widening the secondary slot, the liquid level in the slot is made stable and there is almost no liquid level gradient. In addition, a component is arranged at the bottom of the secondary slot. After the liquid flow flowing down from the slot hole impacts the liquid receiving plate directly below, an umbrella-shaped liquid film is formed, and then it impacts the inner wall of the sprayer and sprays out from the liquid distribution hole, dispersing into a plurality of small liquid droplets, greatly increasing the liquid distribution points, and the liquid is evenly distributed, and the gas-liquid contact is more sufficient, thereby greatly improving the gas-liquid mass transfer efficiency.

[0013] The trough body of the traditional distributor is relatively narrow and has holes on the side of the trough body; if the trough body is widened, the number of troughs will decrease, and thus the number of liquid distribution points will be greatly reduced. The present invention has holes at the bottom of the trough body, and a component is arranged at the bottom of the trough body, so that each liquid flow is dispersed into a large number of small liquid droplets, thereby greatly increasing the number of liquid distribution points. Therefore, widening the trough body will not affect the number of liquid distribution points.

[0014] Through experimental research, it is found that the number of spray points of the present invention is more than twice that of the traditional distributor.

[0015] (3) The present invention has strong anti-blocking ability. In view of the characteristic that there are many impurities in the desulfurization liquid, first, the secondary slot is widened, and relatively large holes are opened at the bottom of the secondary slot, which fully satisfies the liquid flow and makes it difficult for impurities to block the holes, and can avoid liquid deviation. In addition, there is a large gap between the liquid receiving plate arranged at the bottom of the secondary slot and the sprayer, which is not easy to be blocked either. This can extend the service life of the desulfurization tower and reduce the maintenance and cleaning cost.

[0016] (4) The present invention has a high operating flexibility, a large processing capacity, and the tower equipment can operate stably for a long period, having a good application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front view schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a top view schematic diagram of the overall structure of the present invention;

[0019] Figure 3 is a front view schematic diagram of the assembly of the present invention.

[0020] In the figure: support beam 1, support 2, primary tank 3, buffer tank 4, distribution box 5, secondary tank 6, buffer plate 7, sprayer 8, rib plate 9, liquid receiving plate 10, distribution hole 51, tank hole 61, liquid distribution hole 81, ventilation hole 82. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following are specific embodiments of the present invention. The specific embodiments are only used to further illustrate the present invention in detail and do not limit the protection scope of the claims of this application.

[0022] The present invention provides a multi-stage liquid distributor (abbreviated as distributor), characterized in that the distributor includes a support beam 1, a support 2, a primary tank 3, a buffer tank 4, a distribution box 5, a secondary tank 6, a buffer plate 7 and an assembly;

[0023] The support 2 is fixed to the inner side of the tower wall; both ends of the support beam 1 are fixedly installed on their respective supports 2 and are parallel to the horizontal plane; along the horizontal plane direction, a plurality of secondary tanks 6 are fixedly installed at the bottom of the support beam 1;

[0024] Along the horizontal plane direction, at least one primary tank 3 is fixedly installed on the top of all secondary tanks 6; a buffer tank 4 is arranged in each primary tank 3, located in the upper or middle part of the primary tank 3; along the horizontal plane direction, a plurality of distribution boxes 5 are fixedly installed at the bottom of the primary tank 3, and the distribution boxes 5 are located inside the secondary tanks 6; a plurality of distribution holes 51 are opened at the bottom of each distribution box 5; a horizontally arranged buffer plate 7 is fixedly installed at a position in the secondary tank 6 opposite to the distribution box 5;

[0025] A plurality of tank holes 61 are opened at the bottom of each secondary tank 6, and an assembly is fixedly installed below each tank hole 61; the assembly is composed of a sprayer 8, a rib plate 9 and a liquid receiving plate 10; the top of the sprayer 8 is fixed to the bottom of the secondary tank 6; the liquid receiving plate 10 is fixed to the inner wall of the sprayer 8 through the rib plate 9 and is located inside the sprayer 8; a plurality of ventilation holes 82 are opened in the upper part of the side wall of the sprayer 8 along the circumferential direction for gas phase circulation, and a plurality of liquid distribution holes 81 are opened in the lower part of the side wall along the circumferential direction for liquid phase circulation.

[0026] Preferably, the secondary grooves 6 are uniformly arranged along the radial direction of the tower, equidistantly and parallel to each other; the primary grooves 3 are uniformly arranged along the radial direction of the tower, equidistantly and parallel to each other; the primary grooves 3 are perpendicular to the secondary grooves 6 in space, the support beam 1 is parallel to the horizontal plane, and the primary grooves 3 are parallel to the support beam 1 in space.

[0027] Preferably, the distribution boxes 5 are uniformly arranged along the radial direction of the tower, equidistantly and parallel to each other.

[0028] Preferably, the size of the buffer plate 7 is larger than the sum of the sizes of all the distribution holes 51 on the corresponding distribution box 5. That is, all the distribution holes 51 fall within the range of the buffer plate 7.

[0029] Preferably, the liquid receiving plate 10 is located below the vent hole 82.

[0030] Preferably, the liquid receiving plate 10 is directly opposite to the position of the slot hole 61.

[0031] The working principle and working process of the present invention are as follows:

[0032] The liquid flows downward into the primary groove 3. After being buffered by the buffer groove 4 in the primary groove 3 to reduce the impact force of the liquid, it flows out from the distribution holes 51 of the distribution box 5 at the bottom of the primary groove 3, and descends to the secondary groove 6 to complete the primary distribution of the liquid; after the liquid is buffered by the buffer plate 7 in the secondary groove 6 to reduce the impact force of the liquid, it flows down from the slot hole 61 at the bottom of the secondary groove 6 to complete the secondary distribution; after each liquid flow impacts the directly opposite liquid receiving plate 10 below, an umbrella-shaped liquid film is formed to complete the tertiary distribution; the umbrella-shaped liquid film impacts the inner wall of the sprayer 8 and sprays out from the liquid distribution holes 81 on the side wall of the sprayer 8, dispersing into a plurality of small liquid droplets, and the liquid is evenly distributed to complete the quaternary distribution; in this way, a liquid flow is dispersed into many small liquid droplets, thereby greatly increasing the liquid distribution points.

[0033] In addition, by widening the secondary groove 6, the ability to handle the liquid volume is improved, the liquid level in the groove is stable, and there is almost no liquid level gradient; the secondary groove 6 is provided with larger slot holes 61 at the bottom, which fully meets the liquid flow and makes it difficult for impurities to block the holes, and can avoid liquid deviation; there is a large gap between the liquid receiving plate 10 provided at the bottom of the secondary groove 6 and the sprayer 8, and it is not easy to be blocked; therefore, this multi-stage liquid distributor has strong anti-blocking ability.

[0034] There is a gap between the secondary grooves 6 as a gas phase channel, and the side wall of the sprayer 8 is provided with vent holes 82 to increase the gas-liquid contact area. The gas rises from the bottom of this liquid distributor, undergoes gas-liquid mass transfer with a plurality of small liquid droplets sprayed out from the liquid distribution holes 81, and then continues to rise through the gas phase channel between the secondary grooves 6. Since the liquid is dispersed into many small liquid droplets, the gas-liquid contact is more sufficient and the mass transfer efficiency is higher.

[0035] Example 1

[0036] A multi-stage liquid distributor (hereinafter referred to as the distributor), characterized in that the distributor includes a support beam 1, a support 2, a first-stage tank 3, a buffer tank 4, a distribution box 5, a second-stage tank 6, a buffer plate 7 and a component;

[0037] The support 2 is welded and fixed to the inner side of the tower wall; both ends of the support beam 1 are detachably fixed to their respective supports 2 by bolts and nuts, and are parallel to the horizontal plane (i.e., the cross-section of the tower); along the cross-section direction of the tower, several second-stage tanks 6 are detachably fixed to the bottom of the support beam 1 by bolts and nuts;

[0038] Along the cross-section direction of the tower, at least one first-stage tank 3 is detachably fixed on the top of all the second-stage tanks 6 by bolts and nuts; a detachable buffer tank 4 is arranged in each first-stage tank 3, located in the upper or middle part of the first-stage tank 3; along the cross-section direction of the tower, several distribution boxes 5 are uniformly welded and fixed to the bottom of the first-stage tank 3, and the distribution boxes 5 are located inside the second-stage tanks 6; several distribution holes 51 are opened at the bottom of each distribution box 5, and there are various arrangement ways for the distribution holes 51, and the opening range does not exceed the distribution box 5; a horizontally arranged buffer plate 7 is welded and fixed at the position in the second-stage tank 6 opposite to the distribution box 5;

[0039] Several uniformly distributed slot holes 61 are opened at the bottom of each second-stage tank 6, and a component is welded and fixed below each slot hole 61; the component is composed of a sprayer 8, a rib plate 9 and a liquid receiving plate 10; the top of the sprayer 8 is welded and fixed to the bottom of the second-stage tank 6; the liquid receiving plate 10 is welded and fixed to the inner wall of the sprayer 8 through the rib plate 9 and is located inside the sprayer 8; several ventilation holes 82 are uniformly opened along the circumferential direction at the upper part of the side wall of the sprayer 8 for gas phase circulation, and several liquid distribution holes 81 are uniformly opened along the circumferential direction at the lower part of the side wall for liquid phase circulation. The liquid receiving plate 10 is located below the ventilation holes 82.

[0040] Preferably, the second-stage tanks 6 are uniformly arranged along the radial direction of the tower, equidistantly and parallel to each other; the first-stage tanks 3 are uniformly arranged along the radial direction of the tower, equidistantly and parallel to each other; the first-stage tanks 3 are perpendicular to the second-stage tanks 6 in space, the support beam 1 is parallel to the horizontal plane, and the first-stage tanks 3 are parallel to the support beam 1 in space.

[0041] Preferably, the distribution boxes 5 are uniformly arranged along the radial direction of the tower, equidistantly and parallel to each other.

[0042] Preferably, the size of the buffer plate 7 is larger than the sum of the sizes of all the distribution holes 51 on the corresponding distribution box 5.

[0043] Preferably, the liquid receiving plate 10 is located below the ventilation holes 82.

[0044] Preferably, the groove width range of the first-stage tank 3 is 50 - 600 mm;

[0045] Preferably, the slot width of the secondary slot 6 ranges from 30 to 600 mm;

[0046] Preferably, the diameter of the sprayer 8 ranges from 30 to 600 mm;

[0047] Preferably, the diameter of the liquid distribution hole 81 ranges from 3 to 50 mm; the diameter of the ventilation hole 82 ranges from 5 to 100 mm.

[0048] Preferably, the liquid receiving plate 10 is a circular plate, and the diameter ranges from 10 to 550 mm; the distance between the bottom of the liquid receiving plate 10 and the vertex of the liquid distribution hole 81 ranges from -30 to 30 mm.

[0049] Matters not described in the present invention are applicable to the prior art.

Claims

1. A multi-stage liquid distributor, characterized in that, The distributor includes a support beam, a support, a first-level groove, a buffer groove, a distribution box, a second-level groove, a buffer plate and an assembly; The support is fixed to the inner side of the tower wall; both ends of the support beam are fixedly installed on their respective supports; A number of second-level grooves are fixedly installed at the bottom of the support beam; At least one first-level groove is fixedly installed on the top of all the second-level grooves; a buffer groove is arranged in each first-level groove; a number of distribution boxes are fixedly installed at the bottom of the first-level groove; a number of distribution holes are formed at the bottom of each distribution box; a buffer plate is fixedly installed at the position inside the second-level groove opposite to the distribution box; A number of slot holes are formed at the bottom of each second-level groove, and an assembly is fixedly installed below each slot hole; the assembly is composed of a sprinkler, a rib plate and a liquid receiving plate; the top of the sprinkler is fixed to the bottom of the second-level groove; the liquid receiving plate is fixed to the inner wall of the sprinkler through the rib plate and is located inside the sprinkler; a number of ventilation holes are formed in the upper part of the side wall of the sprinkler along the circumferential direction for gas phase circulation, and a number of liquid distribution holes are formed in the lower part of the side wall along the circumferential direction for liquid phase circulation; the liquid receiving plate is located below the ventilation holes.

2. The multi-stage liquid distributor according to claim 1, wherein The second-level grooves are arranged uniformly along the radial direction of the tower, equidistantly and parallel to each other; the first-level grooves are arranged uniformly along the radial direction of the tower, equidistantly and parallel to each other; the first-level grooves and the second-level grooves are vertically spaced in space, the support beam is parallel to the horizontal plane, and the first-level grooves and the support beam are parallel in space.

3. The multi-stage liquid distributor according to claim 1, characterized in that, The distribution box is located inside the second-level groove.

4. The multi-stage liquid distributor according to claim 1, characterized in that, The distribution boxes are arranged uniformly along the radial direction of the tower, equidistantly and parallel to each other.

5. The multi-stage liquid distributor according to claim 1, wherein The size of the buffer plate is larger than the sum of the sizes of all the distribution holes on the corresponding distribution box.

6. The multi-stage liquid distributor according to claim 1, wherein The buffer plate is arranged horizontally.

7. The multi-stage liquid distributor according to claim 1, characterized in that, The liquid receiving plate is aligned with the position of the slot hole.

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