CN112050665A

CN112050665A - Improved efficient suspension type fluid cooling device

Info

Publication number: CN112050665A
Application number: CN202010956683.3A
Authority: CN
Inventors: 李东田
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-12
Filing date: 2020-09-12
Publication date: 2020-12-08

Abstract

The invention discloses an improved efficient suspended fluid cooling device which comprises a shell, wherein the shell is of a cylindrical structure with an opening at the top end, a slag discharge port is arranged in the middle of the bottom end of the shell, a heat flow outlet and a heat flow inlet are respectively arranged on the outer peripheral surface of the shell close to the bottom and the top of the shell, a tube plate is arranged at the top of the shell, and a plurality of cooling tubes are inserted in the tube plate; the top end of the cooling pipe is inserted with a short metal pipe, the cooling pipe is inserted in the shell, the top end of the cooling pipe penetrates out of the top of the pipe plate, a bent pipe is arranged at the position of the top end of the side wall of the cooling pipe, and the bottom end of the cooling pipe is of a closed structure; and one end of the bent pipe, which is far away from the cooling pipe, is connected with a cold flow outlet pipe. The invention can keep more ideal heat transfer driving force, and the cold fluid can obtain more ideal and higher temperature, thereby not only improving the heat recovery value, but also reducing the required quantity of the cold fluid and reducing the power consumption.

Description

Improved efficient suspension type fluid cooling device

Technical Field

The invention relates to the technical field of chemical equipment, in particular to an improved efficient suspension type fluid cooling device.

Background

In industry, in the process of cooling and cooling some fluids, impurities are carried in the fluids and some components are crystallized or desublimated and separated out due to low-temperature saturation, so that a layer of attachments is produced on the surface of a cooler, the heat transfer resistance is large, and the heat exchange effect of the cooler is influenced.

To such circumstances, manufacturers mostly choose cooling tube suspension type coolers to complete the cooling and heat exchange of the fluid, and in the coolers: hot fluid flows between the pipes, and cold fluid flows in the pipes. The structural types mainly include a heat pipe type, a U-shaped pipe type, a coil pipe type or a variant type thereof.

The common point of these structures is that the heat exchange tubes can be suspended in the cooler through tube sheets, and most of the heat exchange tubes fall to the bottom of the cooler under the action of liquid flow sweeping and vibration when dust and sediment are in the hot fluid. The blockage of the cooler by dust and sediment is reduced to a certain extent, but the problems of heat recovery, cold fluid utilization reduction and the like are many defects: when the heat of hot fluid is transferred to cold fluid in a relay way through heat-conducting medium in a pipe, the temperature of medium in the pipe is much lower than that of the hot fluid, the energy level of recovered heat of the cold fluid is reduced, the required quantity of the cold fluid is increased, the temperature drop of the hot fluid is not as good as the direct heat exchange effect with the cold fluid with lower temperature, and other two types of fluid cannot realize the counter-flow heat exchange with the best heat exchange effect because the flow directions of the hot fluid and the cold fluid belong to cross flow and mixed flow, so the heat recovery effect and the utilization effect of the cold fluid are influenced to a certain extent, and the improved high-efficiency suspension type fluid cooling device is provided.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides an improved high-efficiency suspension type fluid cooling device.

In order to achieve the purpose, the invention adopts the following technical scheme:

an improved efficient suspended fluid cooling device comprises a shell, wherein the shell is of a cylindrical structure with an opening at the top end, a slag discharge port is arranged in the middle of the bottom end of the shell, a heat flow outlet and a heat flow inlet are respectively arranged on the outer peripheral surface of the shell close to the bottom and the top of the shell, a tube plate is arranged at the top of the shell, and a plurality of cooling tubes are inserted in the tube plate;

the top end of the cooling pipe is inserted with a short metal pipe, the cooling pipe is inserted in the shell, the top end of the cooling pipe penetrates out of the top of the pipe plate, a bent pipe is arranged at the position of the top end of the side wall of the cooling pipe, and the bottom end of the cooling pipe is of a closed structure;

one end of the bent pipe, which is far away from the cooling pipe, is connected with a cold flow outlet pipe;

a cold flow inlet pipe is connected to one end of the metal short pipe, which is far away from the cooling pipe, the metal short pipe is hermetically connected with the top end of the cooling pipe, and a guide pipe is inserted into one end of the metal short pipe, which is far away from the cold flow inlet pipe;

the bottom end of the flow guide pipe is of an open structure.

Preferably, the cooling pipe is one of a metal pipe and a non-metal pipe.

Preferably, the draft tube is made of a non-metal tube.

Preferably, the inner diameter of the cooling pipe is larger than the outer diameter of the guide pipe.

The invention has the beneficial effects that:

each layer of the cooling unit can form higher heat exchange temperature difference, so that a relatively ideal heat transfer driving force is kept, the temperature of the hot fluid after heat exchange with the cold fluid is lower than that of a heat pipe, cross flow and mixed flow heat exchange type, the heat of the hot fluid is absorbed by the low-temperature fluid, and the cold fluid can obtain relatively ideal and higher temperature compared with other cross flow and mixed flow heat exchange types due to the fact that countercurrent heat exchange can be formed, so that the heat recovery value is improved, the required quantity of the cold fluid can be reduced, and the power consumption is reduced.

Drawings

Fig. 1 is a schematic structural diagram of an improved high-efficiency suspended fluid cooling device according to the present invention.

In the figure: 1 slag discharge port, 2 hot flow outlet, 3 cooling pipe, 4 shell, 5 honeycomb duct, 6 pipe plate, 7 short metal pipe, 8 cold flow inlet pipe, 9 cold flow outlet pipe, 10 elbow pipe, 11 hot flow inlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1, embodiment 1 is an improved efficient suspended fluid cooling device, which includes a housing 4, the housing 4 is a cylindrical structure with an open top end, a slag discharge port 1 is arranged at the middle position of the bottom end of the housing 4, a heat flow outlet 2 and a heat flow inlet 11 are respectively arranged at the positions, close to the bottom and the top, of the outer circumferential surface of the housing 4, a tube plate 6 is arranged at the top of the housing 4, and a plurality of cooling tubes 3 are inserted on the tube plate 6; a short metal pipe 7 is inserted at the top end of the cooling pipe 3, the cooling pipe 3 is inserted in the shell 4, the top end of the cooling pipe 3 penetrates out of the top of the pipe plate 6, a bent pipe 10 is arranged at the top end of the side wall of the cooling pipe 3, and the bottom end of the cooling pipe 3 is of a closed structure; one end of the bent pipe 10, which is far away from the cooling pipe 3, is connected with a cold flow outlet pipe 9; a cold flow inlet pipe 8 is connected to one end, far away from the cooling pipe 3, of the metal short pipe 7, the top end of the cooling pipe 3 is hermetically connected with the metal short pipe 7, and a flow guide pipe 5 is inserted into one end, far away from the cold flow inlet pipe 8, of the metal short pipe 7; the bottom of the draft tube 5 is of an open structure, the cooling tube 3 is one of a metal tube or a nonmetal tube, the draft tube 5 is made of the nonmetal tube, and the inner diameter of the cooling tube 3 is larger than the outer diameter of the draft tube 5.

The suspension type cooling unit for fluid cooling in the embodiment is applied to a cooler for cooling tail gas, the working pressure is normal pressure, the working temperature is 100 ℃, the kiln tail gas is rich in ammonia gas, and the kiln tail gas contains a small amount of dust particles, the heat is recovered by desalted water which is used in a boiler in production, the cooling and dust removal are carried out and then liquefied by a compressor, the cooling pipe 3 is a metal pipe with better heat transfer effect, the bottom of the cooling pipe is closed, the upper part of the cooling pipe penetrates through the cooling pipe, is welded and suspended on a pipe plate 6, the guide pipe 5 is a rubber pipe, the upper part of the cooling pipe 3 is connected with the metal short pipe 7 through splicing and bundling, a cold flow inlet pipe 8 at the other end of the metal short pipe 7 is connected with the desalted water pipe, the desalted water enters from the upper part of the guide pipe.

At the moment, hot fluid outside the cooling pipe 3 flows from top to bottom, cold fluid in an annular space of the guide pipe 5 and the cooling pipe 3 performs countercurrent heat exchange, and exchanges heat with the coldest cold fluid when leaving the bottom of the cooling pipe 3, so that an ideal cooling effect can be obtained, the outlet temperature is low, the residual dust is removed through purification, the cold fluid is sent to a post-treatment process, the cold fluid is heated in an annular channel, reaches the vicinity of a hot fluid inlet pipe near the pipe plate 6, and obtains the best temperature raising effect from a cold fluid outlet pipe 9 at the upper part of the pipe plate 6 after exchanging heat with the hottest hot fluid, more heat is recovered, a small amount of dust in gas falls to the bottom of a cooler under the action of gravity and air flow, a valve is arranged at a slag discharge port 1, and the valve is opened to be discharged through the slag discharge port 1.

Referring to fig. 1 and embodiment 2, an improved high-efficiency suspended fluid cooling device includes a housing 4, the housing 4 is a cylindrical structure with an open top end, a slag discharge port 1 is arranged at the middle position of the bottom end of the housing 4, a heat flow outlet 2 and a heat flow inlet 11 are respectively arranged at the positions, close to the bottom and the top, of the outer circumferential surface of the housing 4, a tube plate 6 is arranged at the top of the housing 4, and a plurality of cooling tubes 3 are inserted on the tube plate 6; a short metal pipe 7 is inserted at the top end of the cooling pipe 3, the cooling pipe 3 is inserted in the shell 4, the top end of the cooling pipe 3 penetrates out of the top of the pipe plate 6, a bent pipe 10 is arranged at the top end of the side wall of the cooling pipe 3, and the bottom end of the cooling pipe 3 is of a closed structure; one end of the bent pipe 10, which is far away from the cooling pipe 3, is connected with a cold flow outlet pipe 9; a cold flow inlet pipe 8 is connected to one end, far away from the cooling pipe 3, of the metal short pipe 7, the top end of the cooling pipe 3 is hermetically connected with the metal short pipe 7, and a flow guide pipe 5 is inserted into one end, far away from the cold flow inlet pipe 8, of the metal short pipe 7; the bottom of the draft tube 5 is of an open structure, the cooling tube 3 is one of a metal tube or a nonmetal tube, the draft tube 5 is made of the nonmetal tube, and the inner diameter of the cooling tube 3 is larger than the outer diameter of the draft tube 5.

The suspension type cooling unit for fluid cooling in the embodiment is applied to a cooler for solution cooling, the working pressure is 0.1Mpa, the working temperature is 95 ℃, the decoloration liquid containing 78% of ammonium sulfate contains a large amount of active carbon particles, a filter press is required to filter the active carbon and then carry out crystallization treatment, in order to recover the heat of the solution to the maximum, before filtration, the waste heat of the part is recovered by desalted water entering a furnace, the cooling pipe 3 is a plastic thin-wall pipe which has better heat transfer effect and is not easy to attach precipitates, the lower end of the cooling pipe is closed, the upper end of the cooling pipe is connected with a metal short pipe 7 penetrating through a pipe plate 6 in a bundling and gluing mode, the flow guide pipe 5 is a rubber pipe, the upper part of the cooling pipe 3 is connected with the metal short pipe 7 through splicing and bundling, a cold flow inlet pipe 8 at the other end of the metal short pipe, the desalted water reaches the bottom of the cooling tube 3 along the flow guide tube 5, then flows upwards along the annular interlayer of the flow guide tube 5 and the cooling tube 3, is heated by the solution outside the tube, the temperature is gradually increased, the desalted water reaches the position near a solution inlet tube near the tube plate 6, and after heat exchange with the hottest inlet solution, the desalted water is removed from a desalted water outlet of the cooling tube 3 at the upper part of the tube plate 6 to form a desalted water main pipe, at the moment, the desalted water obtains the best temperature raising effect, and the recovered waste heat energy level is. The heat loss during the filter pressing is avoided, hot ammonium sulfate solution enters from a heat flow inlet 11 at the upper part of the shell 4 close to the tube plate 6, flows from top to bottom among the cooling tubes 3, and is subjected to heat exchange with desalted water of an annular channel in the tube in a countercurrent way, the temperature is gradually reduced, and the solution exchanges heat with the coldest desalted water when leaving the bottom of the cooling tube 3, so that a lower outlet temperature is obtained, activated carbon particles in the solution reach the bottom of the shell 4 along with the solution under the action of gravity and liquid flow, no dead angle exists due to the suspension of the cooling tube, the phenomenon of blocking the heat exchange tube cannot occur, and after the solution is led out from the lower part of the cooler, the filter press is removed to complete the steps of separating.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. An improved efficient suspended fluid cooling device comprises a shell (4), and is characterized in that the shell (4) is of a cylindrical structure with an opening at the top end, a slag discharge port (1) is formed in the middle of the bottom end of the shell (4), a heat flow outlet (2) and a heat flow inlet (11) are respectively formed in the positions, close to the bottom and the top, of the outer peripheral surface of the shell (4), a tube plate (6) is arranged at the top of the shell (4), and a plurality of cooling tubes (3) are inserted in the tube plate (6);

a short metal pipe (7) is inserted at the top end of the cooling pipe (3), the cooling pipe (3) is inserted in the shell (4), the top end of the cooling pipe (3) penetrates out of the top of the pipe plate (6), a bent pipe (10) is arranged at the top end of the side wall of the cooling pipe (3), and the bottom end of the cooling pipe (3) is of a closed structure;

one end of the bent pipe (10) far away from the cooling pipe (3) is connected with a cold flow outlet pipe (9);

a cold flow inlet pipe (8) is connected to one end, far away from the cooling pipe (3), of the metal short pipe (7), the metal short pipe (7) is connected with the top end of the cooling pipe (3) in a sealing mode, and a guide pipe (5) is inserted into one end, far away from the cold flow inlet pipe (8), of the metal short pipe (7);

the bottom end of the draft tube (5) is of an open structure.

2. The improved high efficiency suspended fluid temperature reduction cooling device as claimed in claim 1, wherein the cooling pipe (3) is one of a metal pipe or a non-metal pipe.

3. The improved high-efficiency suspended fluid cooling device as claimed in claim 2, wherein the draft tube (5) is made of non-metal tube.

4. The improved high-efficiency suspended fluid temperature-reducing cooling device as claimed in claim 3, wherein the inner diameter of the cooling pipe (3) is larger than the outer diameter of the guide pipe (5).