CN212999234U

CN212999234U - Improved liquid distributor for graphite falling film absorber

Info

Publication number: CN212999234U
Application number: CN202021816812.0U
Authority: CN
Inventors: 周伟; 姜成林; 王根荣
Original assignee: Shandong Xinbo'ao Anticorrosion Equipment Co ltd
Current assignee: Shandong Xinbo'ao Anticorrosion Equipment Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-04-20
Anticipated expiration: 2030-08-27

Abstract

The utility model discloses an improved liquid distributor for a graphite falling film absorber, which comprises an upper head, wherein the lower end inside the upper head is fixedly connected with an overflow pipe through a fixed tube plate, the upper end of the overflow pipe is respectively and symmetrically provided with a V-shaped notch and an O-shaped pinhole, and the outer side of the upper head is respectively and fixedly connected with a liquid inlet pipe orifice and an air inlet pipe orifice; through setting up fixed tube sheet, be convenient for fix the overflow pipe in the inside of upper cover, guarantee the stability of overflow pipe simultaneously, through setting up two V-arrangement incisions and two O shape pinholes in the upper end of overflow pipe, change four V-arrangement incisions on former liquid distributor upper portion into two V-arrangement incisions and two O shape pinholes, make the liquid distribution film forming effect of graphite falling film absorber under the low-load operating condition reach and improve, and can expand the output rated load of former graphite falling film absorber to 30% ~ 120% through improving after, the operating stability under the low-load condition has been improved by a wide margin.

Description

Improved liquid distributor for graphite falling film absorber

Technical Field

The utility model relates to a graphite falling liquid film technical field specifically is a graphite falling liquid film is improved generation liquid distributor for absorber.

Background

The graphite falling film absorber is falling film type gas absorption equipment mainly comprising impermeable graphite, and the impermeable graphite is a graphite product which has impermeability to fluid media such as gas, steam, liquid and the like; the graphite material is a special non-metallic material, not only has good physical and mechanical properties and processability, but also has excellent corrosion resistance and high thermal conductivity, so the graphite material is an ideal material for manufacturing chemical anti-corrosion equipment; the graphite product as a structural material also comprises components such as polymer materials and the like so as to adapt to different use conditions; the graphite falling film absorber consists of a gas-liquid distributor, an absorption cooling section and a gas-liquid separator; the gas-liquid distributor is composed of gas and liquid inlet pipes, a pressure stabilizing ring, a liquid distributing pipe and other impervious graphite parts, and the absorption liquid input from the inlet pipes enters the space above the upper tube plate (or the absorption heat exchange block) through the annular space at the bottom of the pressure stabilizing ring and then enters the liquid distributing pipe in a uniformly distributed state; the liquid distribution pipe is also called as a flow guide pipe or an overflow pipe, 4V-shaped notches are uniformly distributed on the upper part of the liquid distribution pipe, and one side of each notch is tangent to the inner wall of the pipe; the absorption liquid enters along the tangential direction, and a spiral disturbed liquid film is formed in the tube and descends; the absorption cooling section is divided into a tube type and a round block hole type according to the structural style, and the structures of the absorption cooling section are respectively similar to a tube type and a round hole type graphite heat exchanger; the absorption liquid descending to the absorption cooling section flows down in a film shape along the inner wall of the pipe (or the hole), and the gas easily dissolved in the absorption liquid flows in the same direction and is fully contacted with the absorption liquid to be absorbed; the heat of solution is transferred to the cooling liquid through the partition wall and taken out of the equipment; the unabsorbed gas enters a gas-liquid separator located at the bottom of the apparatus providing a separation space together with the product. After separation, the gas is sent to a tail gas tower and the product is fed to a storage tank.

The liquid separation performance of the liquid distributor is one of the key factors determining the overall absorption performance of the graphite falling film absorber, the existing graphite falling film absorber has poor liquid distribution film forming effect under the low-load operation condition and low operation stability under the low-load condition, so that an improved liquid distributor for the graphite falling film absorber is needed, the liquid distribution film forming effect under the low-load operation condition is improved, and the operation stability under the low-load condition is improved.

Disclosure of Invention

An object of the utility model is to provide a graphite falling liquid film absorber is with improved generation liquid distributor to solve the current graphite falling liquid film absorber that provides in the above-mentioned background art liquid distribution film forming effect is relatively poor under the low-load operating condition, and the lower problem of operating stability under the low-load condition.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a graphite falling liquid film absorber is with improved generation liquid distributor, includes the upper cover, the inside lower extreme of upper cover passes through fixed tube sheet fixedly connected with overflow pipe, the overflow pipe upper end symmetry respectively is provided with V-arrangement incision and O shape pinhole, the upper cover outside is fixedly connected with feed liquor mouth of pipe and the mouth of pipe of admitting air respectively, the inside top fixedly connected with clamping ring that is located the overflow pipe of upper cover.

As a further aspect of the present invention: one side of the V-shaped notch is tangent with the inner side of the overflow pipe.

As a further aspect of the present invention: the bottom ends of the V-shaped notch and the O-shaped pinhole are both positioned on the same horizontal line.

As a further aspect of the present invention: the bottom end of the upper end enclosure is fixedly connected with a pipe body, and an absorption cooling section is arranged inside the pipe body.

Compared with the prior art, the beneficial effects of the utility model are that:

through setting up fixed tube sheet, be convenient for fix the overflow pipe in the inside of upper cover, guarantee the stability of overflow pipe simultaneously, through setting up two V-arrangement incisions and two O shape pinholes in the upper end of overflow pipe, change four V-arrangement incisions on former liquid distributor upper portion into two V-arrangement incisions and two O shape pinholes, make the liquid distribution film forming effect of graphite falling film absorber under the low-load operating condition reach and improve, and can expand the output rated load of former graphite falling film absorber to 30% ~ 120% through improving after, the operating stability under the low-load condition has been improved by a wide margin.

Drawings

FIG. 1 is a schematic diagram of the internal structure of an improved liquid distributor for a graphite falling film absorber;

FIG. 2 is a schematic perspective view of the upper end of an overflow pipe in an improved liquid distributor for a graphite falling film absorber;

FIG. 3 is a schematic top view of an overflow tube in an improved liquid distributor for a graphite falling film absorber;

fig. 4 is a schematic view of the connection structure between the improved liquid distributor and the tube body for the graphite falling film absorber.

In the figure: the device comprises a pipe body 1, an upper end enclosure 2, a fixed pipe plate 3, an overflow pipe 4, a V-shaped notch 5, an O-shaped pinhole 6, a liquid inlet pipe orifice 7, a gas inlet pipe orifice 8 and a pressure stabilizing ring 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, in the embodiment of the present invention, an improved liquid distributor for a graphite falling film absorber comprises an upper head 2, an overflow pipe 4 is fixedly connected to the lower end of the inside of the upper head 2 through a fixing tube plate 3, the overflow pipe 4 is conveniently fixed inside the upper head 2 by arranging the fixing tube plate 3, the stability of the overflow pipe 4 is ensured, V-shaped notches 5 and O-shaped pinholes 6 are symmetrically arranged at the upper end of the overflow pipe 4, a liquid inlet pipe orifice 7 and a gas inlet pipe orifice 8 are fixedly connected to the outer side of the upper head 2, a pressure stabilizing ring 9 is fixedly connected to the inside of the upper head 2 above the overflow pipe 4, two V-shaped notches 5 and two O-shaped pinholes 6 are arranged at the upper end of the overflow pipe 4, the four V-shaped notches 5 at the upper part of the original liquid distributor are changed into two V-shaped notches 5 and two O-shaped pinholes 6, so that the liquid distribution film forming effect of, and the yield rated load of the original graphite falling film absorber can be expanded to 30-120% after improvement, so that the operation stability under the low-load condition is greatly improved.

Preferably, one side of V-arrangement incision 5 is tangent with the inboard of overflow pipe 4, make the absorption liquid follow the inboard of tangential entering overflow pipe 4, the bottom of V-arrangement incision 5 and O shape pinhole 6 all is located same water flat line, make the even liquid flow of absorption, 2 bottom fixedly connected with bodys 1 of upper cover, body 1 is inside to be provided with the absorption cooling section, the absorption liquid follows the inboard of tangential entering overflow pipe 4, form the liquid film in overflow pipe 4 and descend, the absorption liquid that descends to the absorption cooling section is the membraniform along pipe or downthehole wall and flows down, the gas syntropy that easily dissolves in the absorption liquid flows, fully contact with the absorption liquid, absorbed.

The utility model discloses a theory of operation is: when in use, the upper end enclosure 2 is connected with the tube body 1, the fixed tube plate 3 is arranged in the upper end enclosure 2, the overflow pipe 4 is conveniently fixed in the upper end enclosure 2 by arranging the fixed tube plate 3, the stability of the overflow pipe 4 is ensured at the same time, then absorption liquid enters the upper end enclosure 2 through the liquid inlet pipe orifice 7, gas enters the upper end enclosure 2 through the gas inlet pipe orifice 8, absorption liquid input from the liquid inlet pipe orifice 7 enters the upper tube plate or the space above the absorption heat exchange block through the annular gap at the bottom of the pressure stabilizing ring 9 and then enters the overflow pipe 4 in a uniformly distributed state, the upper end of the overflow pipe 4 is respectively and symmetrically provided with a V-shaped notch 5 and an O-shaped pinhole 6, the four V-shaped notches 5 at the upper part of the original liquid distributor are changed into two V-shaped notches 5 and two O-shaped pinholes 6, so that the liquid distribution film forming effect of the falling film graphite under, the yield rated load of the original graphite falling film absorber can be expanded to 30% -120% after improvement, the operation stability under the condition of low load is greatly improved, one side of the V-shaped notch 5 is tangent to the inner wall of the overflow pipe 4, absorption liquid enters the inner side of the overflow pipe 4 along the tangential direction, a liquid film is formed in the overflow pipe 4 to descend, the absorption liquid descending to the absorption cooling section flows down along the inner wall of the pipe or hole in a film shape, and gas easily soluble in the absorption liquid flows in the same direction and is fully contacted with the absorption liquid to be absorbed; the improvement achieves the effects of improving the film forming effect and improving the running stability under the low-load condition.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. An improved liquid distributor for a graphite falling film absorber comprises an upper end enclosure (2), and is characterized in that: the lower extreme of upper cover (2) inside passes through fixed tube sheet (3) fixedly connected with overflow pipe (4), overflow pipe (4) upper end symmetry respectively is provided with V-arrangement incision (5) and O shape pinhole (6), the upper cover (2) outside fixedly connected with feed liquor mouth of pipe (7) and the mouth of pipe (8) of admitting air respectively, top fixedly connected with clamping ring (9) that upper cover (2) inside is located overflow pipe (4).

2. The improved liquid distributor for graphite falling film absorber according to claim 1, characterized in that: one side of the V-shaped notch (5) is tangent with the inner side of the overflow pipe (4).

3. The improved liquid distributor for graphite falling film absorber according to claim 1, characterized in that: the bottom ends of the V-shaped notch (5) and the O-shaped pinhole (6) are both positioned on the same horizontal line.

4. The improved liquid distributor for graphite falling film absorber according to claim 1, characterized in that: the bottom end of the upper end enclosure (2) is fixedly connected with a pipe body (1), and an absorption cooling section is arranged inside the pipe body (1).