CN217110596U - Anti-blocking heat exchange unit for plate heat exchanger of CO2 capture system - Google Patents

Abstract

The utility model relates to a prevent stifled heat transfer unit for CO2 entrapment system plate heat exchanger, including two and the relative stack of heat transfer board more than two, every heat transfer board is to including two heat transfer slab, and the suppression has the protruding to swell of multirow trapezoidal round platform and the concave to swell of trapezoidal round platform on every heat transfer slab, and the protruding to swell of trapezoidal round platform and the concave setting of alternating the staggered arrangement on the heat transfer slab of trapezoidal round platform, and the protruding to swell mutually support of trapezoidal round platform that same board is right on forms fluid passage one, and adjacent heat transfer board supports to swell to last and forms and fluid passage one is perpendicular and each other not communicating fluid passage two. The utility model discloses because the swell supports to arrange in line in the passageway that forms, forms the regional fluid passage of big direct, and the direct district of fluid is big, prevents among the heat transfer medium that impurity from blockking up heat transfer channel effectual, bearing capacity height. The trapezoidal round platform in the channel bulges towards the concave direction, so that the turbulent flow state of the straight channel is strengthened, the heat transfer is strengthened, the energy efficiency is high, and the comprehensive performance of the flow heat transfer is good.

Description

Anti-blocking heat exchange unit for plate heat exchanger of CO2 capture system

Technical Field

The utility model belongs to the technical field of indirect heating equipment, concretely relates to prevent stifled heat transfer unit for CO2 entrapment system plate heat exchanger.

Background

Global climate change is a concern of international society today, and carbon dioxide generated by the combustion process of fossil fuels is a major cause of the increase in atmospheric carbon dioxide concentration. Reducing the worldwide carbon dioxide emissions while meeting the energy needs of fossil fuels and the like means that Carbon Capture and Sequestration (CCS) technologies are highly desirable. There are three main capture modes of carbon dioxide capture and sequestration technology (CCS), namely pre-combustion capture, post-combustion capture and oxygen-enriched combustion. The current technology is relatively mature in post-combustion capture, i.e., capture of CO2 in the flue gas emitted by combustion. The chemical absorption method and the physical adsorption method are trapped after combustion, but the problem of excessive energy consumption still exists. In order to reduce energy consumption, the heat exchanger is fully developed and applied to all links of the carbon dioxide capture system. The plate heat exchanger has the advantages of high heat exchange efficiency, compact and light structure, small occupied area, long service life and the like, and is applied to a carbon dioxide capture system. However, after combustion, the flue gas inevitably has fine dust which is carried by the lean rich liquor and participates in the heat exchange of the plate heat exchanger of the capture system. The lean rich liquor is subjected to change of flow rate, pressure drop and the like in the heat exchanger, and carried fine dust is precipitated in the heat exchanger again. The plate heat exchanger commonly used in industry is mainly composed of plate sheets pressed with herringbone ripples and welded or pressed by matching gaskets. The plate heat exchanger has the defects of narrow channel bending, easy scaling and blockage, complex physical cleaning, high flow resistance and the like, and is not suitable for the poor-rich liquid working medium containing impurities.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a prevent stifled heat transfer unit for CO2 entrapment system plate heat exchanger, solve and mainly compress tightly by chevron shape corrugated plate welding or cooperation gasket at present and constitute. The plate heat exchanger has the defects of narrow channel bending, easy scaling and blockage, complex physical cleaning, high flow resistance and the like, and is not suitable for the problem of poor and rich liquid working media containing impurities.

The utility model relates to a prevent stifled heat transfer unit for CO2 entrapment system plate heat exchanger, including two and the relative stack of heat transfer board more than two, every heat transfer board is to including two heat transfer slab, and the suppression has the protruding to swell of multirow trapezoidal round platform and the concave to swell of trapezoidal round platform on every heat transfer slab, and the protruding to swell of trapezoidal round platform and the concave staggered arrangement in turn of trapezoidal round platform on the heat transfer slab of protruding to swell, and the protruding to swell of trapezoidal round platform that same board was right up supports formation fluid passage one each other, and adjacent heat transfer board supports formation and fluid passage one perpendicular and each other not communicating fluid passage two to last subtend swell. The flow channels form large through area flow channels.

The utility model discloses because the swell supports to arrange in line in the passageway that forms, forms the regional fluid passage of big direct, and the direct district of fluid is big, prevents among the heat transfer medium that impurity from blockking up heat transfer channel effectual, bearing capacity height. Meanwhile, the fluid erodes the windward side of the trapezoidal round-table bulge to enhance heat transfer, the concave part of the trapezoidal round-table bulge in the channel enhances the turbulent state of the straight channel to enhance heat transfer, the energy efficiency is high, and the comprehensive performance of flow and heat transfer is good.

The size of the concave bulge of the trapezoid round platform is the same as that of the convex bulge of the trapezoid round platform.

The cone angle of the concave bulge of the trapezoid circular truncated cone and the cone angle of the convex bulge of the trapezoid circular truncated cone are 45 degrees, and the height of the cone angle is 1-5 mm.

The diameters of the outer circles of the trapezoidal circular truncated cone concave bulges and the trapezoidal circular truncated cone convex bulges are R, the distance between the adjacent trapezoidal circular truncated cone concave bulges and the distance between the adjacent trapezoidal circular truncated cone convex bulges along the length direction and the width direction are L, and R/2 is more than L and less than R. The plate interval is more uniform, the stress of the supporting point is more reasonable, the pressure resistance of the heat exchanger is stronger, and the resistance is reduced less.

The heat exchange plate is distributed in an isosceles triangle shape along the concave bulge and the convex bulge of the three adjacent trapezoid round platforms in the length direction.

The heat exchange plate is made of stainless steel, carbon steel, low alloy steel, nickel and nickel alloy or titanium and titanium alloy, and is formed by punching. High production efficiency, low production cost, environmental protection and material saving.

Compared with the prior art, the utility model has the advantages of:

1. the fluid erodes the windward side of the trapezoidal round platform bulge to enhance heat transfer, the trapezoidal round platform in the channel is concave towards the bulge to enhance the turbulent state of the straight channel, the heat transfer is enhanced, the energy efficiency is high, and the comprehensive performance of flow heat transfer is good.

2. The flow dead zone in the heat exchange plate channel is small, the side channel protruding to the bulge corresponding to the bulge forms a large straight-through area fluid channel, the fluid straight-through area is large, the heat exchange plate channel is suitable for media which are easy to scale, large in viscosity coefficient, low in flow dynamic pressure and contain impurities, the channel can be directly re-washed by using high-pressure water, and the cleaning process is simple and efficient.

3. The trapezoidal round platform heat exchange bulges are distributed on the plate surface of the heat exchange plate in a concave-convex staggered manner along the length direction of the heat exchange plate, the trapezoidal round platform bulges are distributed in an isosceles triangle manner along the width direction of the heat exchange plate, the cone angle of the trapezoidal round platform bulges is 45 degrees, the concave-convex bulge interval is kept in the range that R/2 is less than L and less than R, the plate interval is more uniform, the stress of a supporting point is more reasonable, the pressure resistance of the heat exchanger is stronger, and the resistance is smaller.

4. The heat exchange plate is punched and formed, the production efficiency is high, the production cost is low, the environment is friendly, and the material is saved.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic top view of a heat exchange plate pair;

FIG. 4 is a left side view schematic of a heat exchange plate pair;

FIG. 5 is an enlarged schematic view of the structure at A in FIG. 2;

FIG. 6 is an enlarged view of the structure at B in FIG. 1;

in the figure: 1. the heat exchange plate comprises a trapezoidal circular truncated cone convex bulge, 2 heat exchange plate pairs, 3 heat exchange plate pairs, 4 trapezoidal circular truncated cone concave bulge, 5 heat exchange plate pieces, 6 heat exchange plate pieces, 7 fluid channels I and 8 and a fluid channel II.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 6, the utility model discloses a prevent stifled heat transfer unit for CO2 entrapment system plate heat exchanger, including two and two heat transfer boards more than 2 stack mutually and form, every heat transfer board includes two heat transfer slab 6 to 2, the suppression has multirow trapezoidal round platform protruding to swell 1 and trapezoidal round platform concave to swell 4 on every heat transfer slab 6, multirow trapezoidal round platform is protruding to swell 1 and trapezoidal round platform concave to swell 4, can also follow length direction 5 and set up along width direction 3, trapezoidal round platform is protruding to swell 1 and trapezoidal round platform concave to swell 4 and alternate the setting on heat transfer slab 6, same heat transfer board is to trapezoidal round platform protruding to swell 1 mutual support on 2 and form fluid passage one 7, adjacent heat transfer board is to the swell support on 2 and form with fluid passage one 7 perpendicular and each other communicating fluid passage two 8.

The sizes of the trapezoidal round platform concave bulge 4 and the trapezoidal round platform convex bulge 1 are the same.

The taper angle of the trapezoid round table concave bulge 4 and the taper angle of the trapezoid round table convex bulge 1 are 45 degrees, and the height is 1 mm-5 mm.

The diameters of the outer circles of the trapezoidal circular truncated cone concave bulges 4 and the trapezoidal circular truncated cone convex bulges 1 are R, the distances between the adjacent trapezoidal circular truncated cone concave bulges 4 and the trapezoidal circular truncated cone convex bulges 1 along the length direction 5 and the width direction 3 are L, and then R/2 is less than L and less than R.

The heat exchange plate 6 is distributed along the length direction 5 with three adjacent trapezoidal round platforms concave towards the bulge 4 and convex towards the bulge 1 in an isosceles triangle shape.

The heat exchange plate 6 is made of stainless steel, carbon steel, low alloy steel, nickel and nickel alloy or titanium and titanium alloy, and the heat exchange plate 6 is formed by punching.

The working principle is as follows: a plurality of rows of trapezoidal circular truncated cone convex bulges 1 and trapezoidal circular truncated cone concave bulges 4 are pressed on each heat exchange plate 6 along the width direction 3, fluid erodes the windward side of the trapezoidal circular truncated cone bulges to strengthen heat transfer, the trapezoidal circular truncated cone concave bulges in the channel strengthen the straight channel turbulent flow state, the heat transfer is strengthened, the energy efficiency is high, the flowing heat transfer comprehensive performance is good, and the trapezoidal circular truncated cone convex bulges 1 on the adjacent heat exchange plate pairs 2 are mutually supported to form vertical channels which are not communicated with each other. The trapezoidal circular truncated cone protrudes to the corresponding side channel of the bulge 1 to form a large straight-through area fluid channel 7, so that impurities in heat exchange media at all levels of a CO2 capture system can be prevented from blocking the heat exchange channels, and meanwhile, the channels can be directly washed by high-pressure water, and the physical cleaning process is simple and efficient. The utility model discloses be fit for plate heat exchanger bearing capacity and require that high, medium do not totally have under the operating mode that blocks up the runner, the resistance falls littleer, and heat transfer efficiency is higher, prevents blockking up, easily washes, and the wholeness can be good, has wide application prospect.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "up", "down", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention rather than requiring the present invention to be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Claims (6)

1. The utility model provides a prevent stifled heat transfer unit for CO2 entrapment system plate heat exchanger, includes that two and more than two heat transfer boards are to (2) stack mutually and are constituteed, and every heat transfer board is to (2) including two heat transfer board pieces (6), its characterized in that: each heat exchange plate (6) is pressed with a plurality of rows of trapezoidal round platform convex bulges (1) and trapezoidal round platform concave bulges (4), the trapezoidal round platform convex bulges (1) and the trapezoidal round platform concave bulges (4) are alternately arranged on the heat exchange plates (6) in a staggered mode, the trapezoidal round platform convex bulges (1) on the same heat exchange plate pair (2) are mutually supported to form a fluid channel I (7), and opposite bulges on adjacent heat exchange plate pairs (2) are supported to form a fluid channel II (8) which is perpendicular to the fluid channel I (7) and is not communicated with the fluid channel I (7).

2. The anti-blocking heat exchange unit for the plate heat exchanger of the CO2 capture system of claim 1, wherein: the size of the trapezoidal round platform concave bulge (4) is the same as that of the trapezoidal round platform convex bulge (1).

3. The anti-blocking heat exchange unit for the plate heat exchanger of the CO2 capture system of claim 2, wherein: the cone angle of the trapezoid round table concave to the bulge (4) and the cone angle of the trapezoid round table convex to the bulge (1) are 45 degrees, and the height is 1 mm-5 mm.

4. The anti-blocking heat exchange unit for the plate heat exchanger of the CO2 capture system of claim 3, wherein: the diameters of the outer circles of the trapezoidal circular truncated cone concave bulge (4) and the trapezoidal circular truncated cone convex bulge (1) are R, the distance between the adjacent trapezoidal circular truncated cone concave bulge (4) and the trapezoidal circular truncated cone convex bulge (1) along the length direction (5) and the width direction (3) is L, and then R/2 is more than L and less than R.

5. The anti-blocking heat exchange unit for the plate heat exchanger of the CO2 capture system of claim 4, wherein: the heat exchange plates (6) are distributed in an isosceles triangle shape along the concave direction bulges (4) and the convex direction bulges (1) of the three adjacent trapezoid round platforms on the length direction (5).

6. The anti-blocking heat exchange unit for the plate heat exchanger of the CO2 capture system of claim 4, wherein: the heat exchange plate (6) is made of stainless steel, carbon steel, low alloy steel, nickel and nickel alloy or titanium and titanium alloy, and the heat exchange plate (6) is formed by punching.

Images