CN218764709U

CN218764709U - Novel high-efficient reboiler

Info

Publication number: CN218764709U
Application number: CN202222641520.3U
Authority: CN
Inventors: 郭宏新; 李晖; 练绵炎
Original assignee: Jiangsu Zhongsheng Pressure Vessel Equipment Manufacturing Co ltd
Current assignee: Jiangsu Zhongsheng Pressure Vessel Equipment Manufacturing Co ltd
Priority date: 2022-10-09
Filing date: 2022-10-09
Publication date: 2023-03-28
Anticipated expiration: 2032-10-09

Abstract

The utility model discloses a novel high-efficient reboiler, it includes left pipe case, interlude and right pipe case, and the inside heat exchange tube of wearing of interlude, this heat exchange tube are two-sided intensive heat exchange tube, and this two-sided both ends light pipe section of intensifying heat exchange tube respectively with the tube sheet welding, the centre is the heat transfer section, and its inner surface structure is continuous spiral muscle, surface for pockmark and helicla flute, is formed by arbitrary material processing such as carbon steel, stainless steel, titanium material, zirconium material, nickel base alloy, copper alloy. The spiral ribs on the inner surface of the heat exchanger mainly play a role of turbulence, can prevent a heat exchange medium from scaling, and also has the functions of increasing the heat exchange area and improving the heat exchange efficiency; the pits on the outer surface increase the heat exchange area, and simultaneously can be used as a vaporization core, so that the heat transfer enhancement effect is excellent under the working condition of evaporation outside the pipe; the spiral groove outside the pipe also has the function of increasing the surface area.

Description

Novel high-efficient reboiler

Technical Field

The utility model belongs to heat exchange, heat transfer device and heat transfer apparatus field, especially a high-efficient heat exchanger, specifically speaking are heat exchanger that is arranged in industrial production to have the phase transition, the reboiler of specially adapted outside of tubes evaporation operating mode.

Background

With the continuous improvement of the industrial technologies of petroleum, petrochemical industry, fine chemical industry and the like, the requirements on high-efficiency heat exchange equipment are also correspondingly improved. The traditional high-efficiency heat exchanger pipe fittings are of two types, one type is a pipe fitting with enhanced heat transfer effect on both sides, such as a corrugated pipe, an internal wave external threaded pipe and the like, and the heat exchange efficiency is improved by 20-60% compared with that of a common light pipe; the other type is a pipe fitting with the heat transfer enhancement effect on one side, such as a channel pipe, a threaded pipe and the like, the heat transfer enhancement effect on one side of the high-efficiency heat exchange pipe is good, the heat exchange efficiency can be improved by 40% -100% compared with that of a common light pipe, but the heat transfer enhancement effect on the other side of the pipe fitting is not realized, so that the heat transfer efficiency of the whole heat exchanger is limited by the heat transfer efficiency on the other side.

The pitted surface tube heat exchanger in the market at present is mostly applied to the boiling working condition outside the tube, and the heat exchange tube is a high-efficiency heat exchange tube with one side for strengthening heat transfer, and the inside of the tube is a smooth surface, so a tube wall laminar boundary layer exists on the inner side of the tube, and the integral heat transfer efficiency of the heat exchanger is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that the inner surface of the heat exchange tube used by the prior high-efficiency heat exchanger in the current market is mostly smooth tubes, so that the heat exchange efficiency cannot be fully exerted and the further improvement of the heat exchange efficiency is influenced, and designs a novel high-efficiency evaporator which can effectively eliminate a tube wall laminar boundary layer and lead the heat transfer temperature field of fluid in the tube to be more uniform through disturbance, thereby improving the heat exchange coefficient in the tube; provides a stable vaporization core and improves the heat exchange coefficient outside the tube. Meanwhile, the heat exchange area is increased, the heat exchange coefficients inside and outside the pipe are further improved, and double-sided enhanced heat transfer is realized.

The technical scheme of the utility model is that:

the utility model provides a novel high-efficient reboiler, it includes left side pipe case, interlude and right side pipe case, and the inside heat exchange tube bundle that has worn of interlude, the heat exchange tube in this heat exchange tube bundle is two-sided heat exchange tube of reinforceing, and the both ends light pipe section of this two-sided heat exchange tube of reinforceing respectively with the tube sheet welding, middle heat exchanger section, characterized by that being: the inner surface structure of the heat exchange section is a continuous spiral rib, the outer surface of the heat exchange section is a pit and spiral groove structure, and the continuous spiral rib on the inner surface plays a role in turbulence, so that the scaling of a heat exchange medium can be prevented, and meanwhile, the heat exchange area is increased, and the heat exchange efficiency is improved; the pits on the outer surface increase the heat exchange area, and simultaneously can be used as a vaporization core, so that the heat transfer enhancement effect is excellent under the working condition of evaporation outside the pipe; the spiral groove also has the effect of increasing the surface area.

The spiral angle of the continuous spiral rib is 3-12 degrees, the height is 0.3-0.6 mm, the number of heads is 1-3, the distance between pockmarks on the outer surface is 0.8-2.0 mm, the height is 0.3-0.5 mm, the angle of a spiral groove on the outer surface is 3-12 degrees, the height is 0.5-1.0 mm, and the number of heads is 1-3.

The heat exchange tube is made of carbon steel, stainless steel, titanium, zirconium, nickel-based alloy or copper alloy metal products.

The beneficial effects of the utility model are that:

1) The utility model discloses because the unique three-dimensional structure of pipe fitting for the whole coefficient of heat transfer of heat exchanger is showing and is improving. The high-efficiency heat exchanger can achieve the purposes of reducing energy consumption and reducing material consumption.

2) Reducing the early investment of reboiler equipment: along with the improvement of heat exchange efficiency, the number of heat exchange tubes can be correspondingly reduced, the sizes of the cylinder and the tube plate are also correspondingly reduced, and the manufacturing cost of heat exchanger equipment can be greatly reduced;

3) Reducing the process energy consumption of the reboiler equipment: along with the improvement of the heat exchange efficiency, the energy loss of the system is less, the utilization rate is higher, and the operation cost of engineering projects is favorably saved;

4) Reducing the installation space of the reboiler equipment: when some project technologies are upgraded, the installation space is limited, and the project can be ensured to be completed smoothly only by selecting a heat exchanger with higher heat exchange efficiency.

Drawings

Fig. 1 is a schematic structural view of the high-efficiency reboiler of the present invention.

Fig. 2 is a schematic structural diagram of the heat exchange tube of the present invention.

Fig. 3 is a partial front view of the heat exchange tube of the present invention.

In the figure: 1-left upper tube box, 2-liquid inlet, 3-gas outlet, 4-distance tube, 5-support plate, 6-vent, 7-heat exchange tube bundle, 8-shell, 9-gas outlet, 10-right tube box, 11-liquid outlet, 12-left lower tube box, 13-partition plate and 14-liquid inlet.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

As shown in fig. 1-3.

A novel efficient reboiler comprises an upper left pipe box 1, a liquid inlet 2, a gas outlet 3, distance pipes 4, a supporting plate 5, a vent 6, a heat exchange pipe bundle 7, a shell 8, a gas outlet 9, a right pipe box 10, a liquid outlet 11, a lower left pipe box 12, a partition plate 13 and a liquid inlet 14. The upper left pipe box 1 and the lower left pipe box 12 are divided into an upper part and a lower part by a partition plate 13, the upper left pipe box 1 is provided with a liquid inlet 2, the lower part of the lower left pipe box 12 is provided with a liquid outlet 11, the assembly of the upper left pipe box 1 and the lower left pipe box 12 is installed at the left end of the shell 8, the right pipe box 10 is installed at the right end of the shell 8, two ends of the shell 8 are respectively provided with a gas outlet 3 and a gas outlet 9, the middle upper part is provided with a vent 6, the lower part is provided with a liquid inlet 14, the shell 8 is internally provided with a supporting plate 5 for fixing the heat exchange pipe bundle 7, and the distance between the supporting plates 5 is kept by a distance pipe 4 as shown in figure 1. The innovation of the invention is that the heat exchange tubes forming the heat exchange tube bundle 7 are double-sided reinforced heat exchange tubes, two ends of each double-sided reinforced heat exchange tube are respectively provided with a light pipe, the middle part is a heat exchange section, the outer surfaces of the heat exchange sections are provided with a spiral groove 15 and a bur 16, as shown in figure 2, the bur comprises a longitudinal groove 17 and an annular groove 19, as shown in figure 3, the distance between the longitudinal grooves is 0.8 to 2.0mm, the height is 0.3 to 0.5mm, the angle of the spiral groove is 3 to 12 degrees, the height is 0.5 to 1.0mm, and the number of heads is 1 to 3; the inner surface of the heat exchange tube is provided with a spiral rib 18, the spiral angle is 3 to 12 degrees, the height is 0.3 to 0.6mm, and the head number is 1 to 3. The three-dimensional structure of the heat exchange tube is formed by one-time processing through the combination of various dies, and the outer diameter of the heat exchange section is equal to or slightly smaller than that of the light tubes at two ends.

Examples are given.

The utility model provides a novel high-efficient reboiler, its whole size length 8800mm, diameter 1800mm, liquid phase medium gets into the shell side from 8 bottom liquid inlets 14 of casing, after the boiling heat transfer, becomes gas by liquid, discharges from 8 upper portion gas outlet 3 of casing and gas outlet 9, and high temperature liquid phase gets into the tube side and through right case 10 from the liquid inlet 2 of upper left case 1, and after the heat transfer, the medium temperature reduces and becomes low temperature liquid phase, discharges from the liquid outlet 11 of lower left case 12. 3508S 31603 double-sided reinforced heat exchange tubes with the diameter of 19 x 2 x 7500mm are arranged in the evaporator, the pit clearance on the outer surface of the evaporator is 0.8mm, the height of the evaporator is 0.4mm, the angle of a spiral groove is 7.6 degrees, the depth of the spiral groove is 0.8mm, the angle of a spiral rib on the inner surface of the evaporator is 7.6 degrees, the height of the spiral rib is 0.4mm, and the number of heads is 1. The total heat transfer coefficient of the high-efficiency evaporator is improved by 20 percent compared with that of the common evaporator, the whole manufacturing cost of the equipment is reduced by 1 percent, and the high-efficiency evaporator also has the advantages of low process energy consumption, small installation space and the like.

The utility model discloses the part that does not relate to is the same with prior art or can adopt prior art to realize.

Claims

1. The utility model provides a novel high-efficient reboiler, it includes left pipe case, interlude and right pipe case, and heat exchange tube bundle has been worn to the interlude is inside, and the heat exchange tube in this heat exchange tube bundle is two-sided intensive heat exchange tube, and this two-sided intensive heat exchange tube's both ends light pipe section respectively with the tube sheet welding, the centre is heat transfer section, characterized by: the inner surface structure of the heat exchange section is a continuous spiral rib, the outer surface of the heat exchange section is a pit and spiral groove structure, and the continuous spiral rib on the inner surface plays a role in turbulence, so that the scaling of a heat exchange medium can be prevented, and meanwhile, the heat exchange area is increased, and the heat exchange efficiency is improved; the pits on the outer surface increase the heat exchange area, and simultaneously can be used as a vaporization core, so that the heat transfer enhancement effect is excellent under the working condition of evaporation outside the pipe; the spiral groove also has the effect of increasing the surface area.

2. The new high efficiency reboiler as set forth in claim 1, wherein: the spiral angle of the continuous spiral rib is 3-12 degrees, the height is 0.3-0.6 mm, the number of heads is 1-3, the distance between pockmarks on the outer surface is 0.8-2.0 mm, the height is 0.3-0.5 mm, the angle of a spiral groove on the outer surface is 3-12 degrees, the height is 0.5-1.0 mm, and the number of heads is 1-3.

3. The new high efficiency reboiler as claimed in claim 1 or 2, characterized by: the heat exchange tube is made of carbon steel, stainless steel, titanium, zirconium, nickel-based alloy or copper alloy metal products.