CN211926611U

CN211926611U - MGGH and waste heat recovery system of compound phase transition heat transfer

Info

Publication number: CN211926611U
Application number: CN202020596752.XU
Authority: CN
Inventors: 林科; 张玉斌; 李刚; 季元良; 马志良
Original assignee: Shandong Boran Power Technology Co ltd
Current assignee: Shandong Boran Power Technology Co ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-11-13
Anticipated expiration: 2030-04-20

Abstract

The utility model relates to an environmental engineering technical field, and a compound phase transition heat transfer's MGGH and waste heat recovery system are disclosed, including the evaporating end heat exchanger, desulfurizing tower and condensing end heat exchanger, the output of evaporating end heat exchanger is connected with the input of desulfurizing tower, the output of desulfurizing tower is connected with the input of condensing end heat exchanger, the output of condensing end heat exchanger is connected with the input of evaporating end heat exchanger and is constituted the circulation, the evaporating end heat exchanger includes the shell, the shell is the metal cylinder structure, the upper surface of shell has been seted up and has been extended to the inside round hole of shell, the round hole is total two sets of, the rear end respectively is provided with a set of round hole before the upper surface of shell, the last fixed surface of shell installs the business turn over gas port, the business turn. The utility model discloses in, compare with traditional heat exchanger, the heat exchange efficiency of the unit volume of this heat exchanger has promoted by a wide margin, so holistic volume has become littleer, has reached the effect that occupies mill's space still less.

Description

MGGH and waste heat recovery system of compound phase transition heat transfer

Technical Field

The utility model relates to an environmental engineering technical field especially relates to a MGGH and waste heat recovery system of compound phase transition heat transfer.

Background

The heat exchanger is a device for transferring part of heat of hot fluid to cold fluid, and is also called as a heat exchanger. The heat exchanger plays an important role in chemical industry, petroleum industry, power industry, food industry and other industrial production, can be used as a heater, a cooler, a condenser, an evaporator, a reboiler and the like in chemical industry production, has wide application, and is essential in MGGH of composite phase change heat exchange and internal heat exchangers of waste heat recovery systems. The heat exchange tubes in the existing heat exchangers in the market at present adopt tubes with the same diameter, when two fluids with different temperatures pass through the inner wall and the outer wall of the heat exchange tubes simultaneously in a convection mode, the high-temperature circulation can transmit the temperature of the high-temperature circulation to the low-temperature fluid, but the diameters of the traditional heat exchange tubes are the same, the fluid in the heat exchange tubes can only be contacted with the external fluid through the outer wall of the heat exchange tubes, the contact area is small, the length of the heat exchange tubes needs to be increased to realize the temperature transmission, so that the contact area of the fluid inside and outside the heat exchange tubes is increased, and the problem of low heat exchange efficiency of excessively large volume per unit volume is difficult to. Therefore, a MGGH and waste heat recovery system with composite phase change heat exchange is provided.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve the technical problem that above-mentioned prior art exists, provide a MGGH and waste heat recovery system of compound phase transition heat transfer.

In order to achieve the purpose, the utility model adopts the following technical scheme, a composite phase-change heat-exchange MGGH and waste heat recovery system comprises an evaporation end heat exchanger, a desulfurization tower and a condensation end heat exchanger, wherein the output end of the evaporation end heat exchanger is connected with the input end of the desulfurization tower, the output end of the desulfurization tower is connected with the input end of the condensation end heat exchanger, the output end of the condensation end heat exchanger is connected with the input end of the evaporation end heat exchanger to form a circulation, the evaporation end heat exchanger comprises a shell, the shell is of a metal cylinder structure, round holes extending into the shell are formed in the upper surface of the shell, the number of the round holes is two, a group of the round holes are respectively arranged at the front end and the rear end of the upper surface of the shell, an air inlet and an air outlet are fixedly arranged on the upper surface of the shell, the two groups of air inlets and outlets are respectively positioned right above the two groups of round holes, and the excircle of each air inlet and outlet is provided with a thread.

The side all is provided with the inlet outlet around the shell, the inlet outlet is the hollow circular cylinder structure, the excircle department of one side at the inlet outlet approaching shell inner center and the interior round fixed connection in both ends of shell, the equal fixed mounting of both ends internal face has the baffle around the shell, the baffle is discoid metal construction, the heat exchange tube entry has been seted up on the surface of baffle, the even fixed mounting of internal face of shell has two sets of baffling boards, the baffling board is discoid, the baffling board is isolated into the independent region of three equidimension with the inner space of shell, the baffling hole that runs through the baffling board is all seted up on the surface of baffling board, the inside of shell is provided with the.

Preferably, the heat exchange tube is a hollow cylinder structure, the heat exchange tube is made of metal, convex discs are uniformly arranged at the outer circle of the heat exchange tube, and the convex discs are of hollow circular ring structures.

Preferably, the convex disc is communicated with the inside of the heat exchange tube, one end of the heat exchange tube, which is positioned between the partition plate and the baffle plate, is fixedly connected with an inner circle of the inlet of the heat exchange tube on the surface of the partition plate, the other end of the heat exchange tube, which is positioned between the two groups of baffle plates, is fixedly connected with an inner circle of the baffling hole on the surface of the baffle plate, the two ends of the heat exchange tube, which is positioned between the two groups of baffle plates, are fixedly connected with the inner circle of the baffling hole on the surface of the baffle plate.

Preferably, supports are fixedly mounted on the bottom surfaces of the front end and the rear end of the shell, the supports are made of metal, the section of each support is of an L-shaped structure, the supports are two groups in total, support fixing holes are formed in one sides, far away, of the two groups of supports, and limiting blocks are fixedly mounted at the upper ends of the left side and the right side of each support.

Advantageous effects

The utility model provides a MGGH and waste heat recovery system of compound phase transition heat transfer. The method has the following beneficial effects:

(1) the MGGH and waste heat recovery system of the composite phase change heat exchange can supply the generated steam part to other processes under the condition that the tail smoke temperature meets the requirement, simultaneously supplements demineralized water to an evaporation end heat exchanger, when high-temperature smoke enters the inside of a shell through a gas inlet and a gas outlet which are positioned at the front end of the shell, the high-temperature smoke gradually fills three spaces separated by a baffle plate in the shell, then the high-temperature smoke is discharged out of the inside of the shell through the gas inlet and the gas outlet which are positioned at the threads at the rear end of the shell, the high-temperature smoke circulates in the inside of the shell, water enters the inside of the shell through a water inlet and a water outlet which are positioned at the rear end of the shell, when the water contacts with the baffle plate, the water enters the inside of a heat exchange tube through a heat exchange tube inlet which is arranged on the surface of the baffle plate, the water flows forwards from the back in the inside of the shell, and the contact area of the water in, and in the inside of heat exchange tube, when the inside rivers of heat exchange tube were to the position at protruding dish place, the diameter grow that water flowed through, the velocity of flow of water in the protruding dish inside this moment reduces, and the contact time of water and the outside high temperature flue gas of protruding dish has also lengthened, has reached the effect that promotes heat exchanger heat exchange efficiency.

(2) The MGGH and waste heat recovery system with composite phase change heat exchange has the advantages that under the condition that the tail smoke temperature meets the requirement, the generated steam can be partially supplied to other processes, the evaporation end heat exchanger is supplemented with demineralized water, when high-temperature smoke enters the shell through the air inlet and the air outlet which are arranged at the front end of the shell, the high-temperature smoke gradually fills three spaces separated by the baffle plates in the shell, then the high-temperature smoke is discharged out of the shell through the air inlet and the air outlet which are arranged on the threads at the rear end of the shell, the high-temperature smoke circulates in the shell, water enters the shell through the water inlet and the water outlet which are arranged at the rear end of the shell, when the water contacts the baffle plates, the water enters the heat exchange tube through the inlet which is arranged on the surface of the baffle plates, the water flows forwards from the inside of the shell, and the contact area of the water in the heat exchange tube outside the heat exchange tube is increased under the action of, and in the inside of heat exchange tube, when the inside rivers of heat exchange tube were to the position at protruding dish place, the diameter grow that water flowed through, water reduces at the inside velocity of flow of protruding dish this moment, and the contact time of water and the outside high temperature flue gas of protruding dish has also lengthened, compares with traditional heat exchanger, and the heat exchange efficiency of the unit volume of this heat exchanger has promoted by a wide margin, so holistic volume has become little, has reached the effect that occupies less mill's space.

Drawings

Fig. 1 is a schematic diagram of a MGGH and waste heat recovery system for composite phase-change heat exchange of the present invention;

FIG. 2 is a schematic view of the structure of the housing of the present invention;

FIG. 3 is a schematic view of the baffle structure of the present invention;

FIG. 4 is a schematic view of the heat exchange tube structure of the present invention;

fig. 5 is a schematic view of the structure of the convex disc of the present invention.

Illustration of the drawings:

the heat exchanger comprises a shell 1, a circular hole 2, an air inlet and an air outlet 3, threads 4, a water inlet and an air outlet 5, a partition plate 6, a heat exchange tube inlet 7, a baffle plate 8, a baffling hole 9, a heat exchange tube 10, a convex disc 11, a support 12, a support fixing hole 13, a limiting block 14, an evaporation section heat exchanger 15, a desulfurizing tower 16 and a condensation section heat exchanger 17.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): a composite phase change heat exchange MGGH and waste heat recovery system comprises an evaporation end heat exchanger 15, a desulfurization tower 16 and a condensation end heat exchanger 17, wherein the output end of the evaporation end heat exchanger 15 is connected with the input end of the desulfurization tower 16, the output end of the desulfurization tower 16 is connected with the input end of the condensation end heat exchanger 17, the output end of the condensation end heat exchanger 17 is connected with the input end of the evaporation end heat exchanger 15 to form a circulation, the evaporation end heat exchanger 15 comprises a shell 1, the shell 1 is of a metal cylinder structure, round holes 2 extending into the shell 1 are formed in the upper surface of the shell 1, the number of the round holes 2 is two, a group of round holes 2 is respectively formed in the front end and the rear end of the upper surface of the shell 1, an air inlet and outlet 3 is fixedly installed on the upper surface of the shell 1, the air inlet and outlet 3 is of a hollow cylinder structure, and the number of, two sets of business turn over gas port 3 is located two sets of round holes 2 directly over respectively, the excircle department of business turn over gas port 3 is seted up screw thread 4.

The heat exchanger is characterized in that the front side and the rear side of the shell 1 are respectively provided with a water inlet and a water outlet 5, the water inlet and the water outlet 5 are of a hollow cylinder structure, the water inlet and the water outlet 5 are fixedly connected with an excircle on one side close to the inner center of the shell 1 and inner circles on two ends of the shell 1, the inner wall surfaces of the front end and the rear end of the shell 1 are respectively fixedly provided with a partition plate 6, the partition plates 6 are of a disc-shaped metal structure, the surface of each partition plate 6 is provided with a heat exchange tube inlet 7, the inner wall surface of the shell 1 is uniformly and fixedly provided with two groups of baffle plates 8, each baffle plate 8 is disc-shaped, the baffle plates 8 isolate the inner space of the shell 1 into three independent areas with equal size, the surfaces of the baffle plates 8 are respectively provided with baffle holes 9, the excircle department of heat exchange tube 10 evenly is provided with convex disc 11, convex disc 11 is the annular structure of cavity circle, convex disc 11 and the inside UNICOM of heat exchange tube 10, be located heat exchange tube 10 one end between baffle 6 and baffling board 8 and set up in baffle 6 surface heat exchange tube entry 7's interior round fixed connection, one end and set up in baffling board 8 surface baffling hole 9's interior round fixed connection, be located the both ends of heat exchange tube 10 between two sets of baffling boards 8 all with set up in baffling hole 9's on baffling board 8 surface interior round fixed connection, the quantity of baffling hole 9 that baffling board 8 surface was seted up is the twice of heat exchange tube 10 quantity, the equal fixed mounting in front and back end bottom surface of shell 1 has support 12, support 12 is made by the metal, the section of support 12 is L shape structure, support 12 is total two sets of, and two sets of support 12 all has seted up support fixed orifices 13 to, the upper ends of the left side and the right side of the support 12 are fixedly provided with limit blocks 14.

The utility model discloses a theory of operation:

a MGGH and waste heat recovery system for composite phase change heat exchange consists of an evaporation end heat exchanger 15, a desulfurizing tower 16, a desulfurizing tower and a condensation end heat exchanger 17; when the system operates, high-temperature flue gas enters the desulfurizing tower 16 through the evaporation end heat exchanger 15, then passes through the condensation end heat exchanger 17, and is discharged into the atmosphere. The evaporation end heat exchanger 15 absorbs heat of the flue gas to generate steam, the steam is naturally transmitted to the condensation end heat exchanger 17 through density difference, the flue gas is heated by heat release in the condensation end heat exchanger 17, the steam is changed into condensed water and returns to the evaporation end heat exchanger 15 to absorb heat again, and a closed cycle is formed. When the temperature of the tail flue gas meets the requirement, the generated steam can be partially supplied to other processes, and meanwhile, the evaporation end heat exchanger 15 is supplemented with demineralized water, when the high-temperature flue gas enters the inside of the shell 1 through the air inlet and outlet 3 positioned at the front end of the shell 1, the high-temperature flue gas gradually fills up three spaces separated by the baffle plate 8 in the shell 1, then the high-temperature flue gas is discharged out of the inside of the shell 1 through the air inlet and outlet 3 of the thread 4 positioned at the rear end of the shell 1, the high-temperature flue gas circulates in the inside of the shell 1, water enters the inside of the shell 1 through the water inlet and outlet 5 positioned at the rear end of the shell 1, when the water contacts the partition plate 6, the water enters the inside of the heat exchange tube 10 through the heat exchange tube inlet 7 arranged on the surface of the partition plate 6, the water flows forwards from the back in the inside of the shell 1, and under the action of the convex disc 11 arranged at the excircle of the heat exchange, and in the heat exchange tube 10, when the water in the heat exchange tube 10 flows to the position of the convex disc 11, the diameter of the water flowing through is increased, the flow velocity of the water in the convex disc 11 is reduced, and the contact time of the water and the high-temperature flue gas outside the convex disc 11 is also prolonged.

Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above-described embodiments, and many modifications are possible. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should be considered as belonging to the protection scope of the present invention.

Claims

1. The utility model provides a compound phase transition heat transfer's MGGH and waste heat recovery system, includes evaporating end heat exchanger (15), desulfurizing tower (16) and condensing end heat exchanger (17), the output of evaporating end heat exchanger (15) is connected with the input of desulfurizing tower (16), the output of desulfurizing tower (16) is connected with the input of condensing end heat exchanger (17), the output of condensing end heat exchanger (17) is connected with the input of evaporating end heat exchanger (15) and is constituted the circulation, evaporating end heat exchanger (15) include shell (1), its characterized in that: the heat exchanger is characterized in that a round hole (2) extending into the shell (1) is formed in the upper surface of the shell (1), an air inlet and an air outlet (3) are fixedly formed in the upper surface of the shell (1), water inlets and water outlets (5) are formed in the front side and the rear side of the shell (1), partition plates (6) are fixedly mounted on the inner wall surfaces of the front end and the rear end of the shell (1), heat exchange tube inlets (7) are formed in the surface of each partition plate (6), two groups of baffle plates (8) are uniformly and fixedly mounted on the inner wall surface of the shell (1), baffle holes (9) penetrating through the baffle plates (8) are formed in the surface of each baffle plate (8), heat exchange tubes (10) are arranged in the shell (1), supports (12) are fixedly mounted on the bottom surfaces of the front end and the rear end of the shell (1), the section of, support fixed orifices (13) have all been seted up to one side of keeping away from in two sets of support (12), equal fixed mounting has stopper (14) in the side upper end about support (12).

2. The MGGH and waste heat recovery system adopting composite phase-change heat exchange as claimed in claim 1, wherein: round hole (2) are total two sets ofly, the rear end respectively is provided with a set of round hole (2) before the upper surface of shell (1), business turn over gas port (3) are the hollow cylinder structure, business turn over gas port (3) are total two sets ofly, two sets of business turn over gas port (3) are located two sets of round hole (2) directly over respectively, thread (4) have been seted up in the excircle department of business turn over gas port (3).

3. The MGGH and waste heat recovery system adopting composite phase-change heat exchange as claimed in claim 1, wherein: the baffle plate (8) is disc-shaped, and the baffle plate (8) isolates the inner space of the shell (1) into three independent areas with the same size.

4. The MGGH and waste heat recovery system adopting composite phase-change heat exchange as claimed in claim 1, wherein: the heat exchange tube (10) is a hollow cylinder structure, the heat exchange tube (10) is made of metal, the outer circle of the heat exchange tube (10) is uniformly provided with a convex disc (11), the convex disc (11) is of a hollow circular ring-shaped structure, and the convex disc (11) is communicated with the inside of the heat exchange tube (10).

5. The MGGH and waste heat recovery system adopting composite phase-change heat exchange as claimed in claim 1, wherein: be located between baffle (6) and baffling board (8) heat exchange tube (10) one end with set up in interior circular department fixed connection of baffle (6) surface heat exchange tube entry (7), one end with set up in interior circular department fixed connection of baffling board (8) surface baffling hole (9), the both ends that are located heat exchange tube (10) between two sets of baffling boards (8) all with set up in interior circular department fixed connection of baffling hole (9) on baffling board (8) surface, the quantity of baffling hole (9) that baffling board (8) surface was seted up is the twice of heat exchange tube (10) quantity.