CN114877717A - Waste heat recovery boiler suitable for maleic anhydride device - Google Patents

Waste heat recovery boiler suitable for maleic anhydride device Download PDF

Info

Publication number
CN114877717A
CN114877717A CN202210277821.4A CN202210277821A CN114877717A CN 114877717 A CN114877717 A CN 114877717A CN 202210277821 A CN202210277821 A CN 202210277821A CN 114877717 A CN114877717 A CN 114877717A
Authority
CN
China
Prior art keywords
heat exchange
inner guide
pressure bearing
cylinder
guide cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210277821.4A
Other languages
Chinese (zh)
Inventor
刘恒
许敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Challenge Petrochemical Machinery Corp
Original Assignee
Challenge Petrochemical Machinery Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Challenge Petrochemical Machinery Corp filed Critical Challenge Petrochemical Machinery Corp
Priority to CN202210277821.4A priority Critical patent/CN114877717A/en
Publication of CN114877717A publication Critical patent/CN114877717A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/163—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
    • F28D7/1653—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing the conduit assemblies having a square or rectangular shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

Abstract

The invention relates to the technical field of heat exchangers, in particular to a waste heat recovery boiler suitable for a maleic anhydride device, which comprises an outer pressure bearing cylinder, an inner guide cylinder and a plurality of groups of heat exchange pipe sets, wherein the outer pressure bearing cylinder is cylindrical, and the inner guide cylinder is arranged in the outer pressure bearing cylinder in a penetrating way; the heat exchange tube bundle consisting of the main body sections of the multiple groups of heat exchange tube groups is covered by the inner guide cylinder, and the radial section of the inner guide cylinder is a polygon matched with the heat exchange tube bundle; compared with the prior art, starting from the square single outer shell with poor pressure bearing capacity, aiming at the working condition with larger pressure bearing, the original outer shell is divided into two parts: the inner wall of the inner guide cylinder restrains and guides the flow direction of heat exchange fluid, so that the inner guide cylinder is in full contact with a heat exchange tube set, the shell side space is fully utilized, the heat exchange efficiency is improved, the circular outer pressure bearing cylinder mainly bears fluid pressure, the effect of retaining the flow guide effect of the polygonal cylinder body is achieved, the pressure bearing can be realized in a circular form, and the advantages of strong pressure bearing capacity and good flow guide effect are achieved.

Description

Waste heat recovery boiler suitable for maleic anhydride device
Technical Field
The invention relates to the technical field of heat exchangers, in particular to equipment for carrying out heat exchange on two fluid media in the fields of petroleum refining, chemical industry, electric power, metallurgy and the like, and particularly relates to a waste heat recovery boiler suitable for a maleic anhydride device.
Background
A heat exchanger is a device for transferring part of heat of a hot fluid to a cold fluid, and is also called a heat exchanger.
A tubular heat exchanger for producing maleic anhydride, as shown in figure 4, contains the shell body and penetrates the multiunit heat transfer finned tube in the shell body, because the tube bank of multiunit heat transfer finned tube is whole for square, if shell side barrel is made circularly, can leave the space around square heat transfer finned tube bank, the heat exchange efficiency of heat transfer fluid in this space is low. Therefore, the corresponding square outer shell is adopted, the inner wall of the outer shell restrains and guides the flow direction of the heat exchange fluid, so that the heat exchange fluid is fully contacted with the heat exchange finned tube, the shell side space is fully utilized, and the heat exchange efficiency is improved.
In the traditional process, the pressure of the flowing heat exchange fluid on the shell process fluid is small, so that the pressure born by a square outer shell arranged aiming at the square heat exchange tube bundle is small, the square outer shell does not need to be made to be thick and can pass through stress check, and the use requirement is met. However, with the development of the process, when the heat exchange fluid flowing into the outer shell has a large pressure, the heat exchange fluid can apply a large pressure to the inner wall of the outer shell, and the square outer shell needs to be made thicker to meet the requirement of strength check because the square shell has a poor pressure bearing capability compared with the circular shell. However, the thickness of the outer shell should not be too large, subject to various aspects.
By last knowing, under the condition that the outer wall of the outer shell does not increase the guide plate, adopt the square outer shell body although the water conservancy diversion is effectual but the pressure-bearing effect is poor, and adopt the circular outer shell body although the pressure-bearing is effectual but the water conservancy diversion effect is poor, and prior art is difficult to compatible water conservancy diversion effect and pressure-bearing effect.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides the waste heat recovery boiler suitable for the maleic anhydride device, which has the advantages of strong pressure bearing capacity of an outer shell and good internal flow guiding and heat exchange effects.
In order to achieve the purpose, the invention provides the following technical scheme:
the waste heat recovery boiler comprises an outer pressure bearing cylinder, an inner guide cylinder and a plurality of groups of heat exchange tube groups, wherein the outer pressure bearing cylinder is cylindrical, the inner guide cylinder is arranged in the outer pressure bearing cylinder in a penetrating manner, and inlets and outlets of the plurality of groups of heat exchange tube groups respectively penetrate through the side wall of the outer pressure bearing cylinder in a sealing manner; the heat exchange tube bundle consisting of the main body sections of the multiple groups of heat exchange tube groups is covered by the inner guide cylinder, and the radial section of the inner guide cylinder is a polygon matched with the heat exchange tube bundle; a transition space is reserved between the inner guide cylinder and the outer pressure bearing cylinder, and the side wall of the inner guide cylinder is provided with an overflowing hole, so that the inner guide cylinder is communicated with the transition space.
As a further scheme of the application, the two ends of the outer pressure bearing cylinder are provided with inlet and outlet cones; the two ends of the inner circulating cylinder are provided with tapered inlet and outlet flow deflectors, and the small openings of the inlet and outlet flow deflectors are connected with the small openings of the inlet and outlet cones in a connection mode.
As a further scheme of the application, the heat exchange tube bundle is arranged in a tetragonal shape, and the radial section of the inner guide cylinder is correspondingly square.
As a further scheme of this application, interior draft tube is split type structure, and it includes a plurality of fixed submodule pieces of assembling each other, and assembles the position between two adjacent heat exchange tube sets.
As a further aspect of the present application, a plurality of manholes are separately arranged along a length direction of the inner guide shell.
As a further scheme of the application, the transition space is filled with a flow-resisting heat-insulating structure.
As a further proposal of the application, the flow-resisting and heat-preserving structure is heat-insulating cotton, gypsum, casting material or fiber blanket.
As a further scheme of the application, each group of heat exchange tube groups are arranged along the radial direction of the outer pressure bearing cylinder, and the inner guide cylinder and the outer pressure bearing cylinder are coaxially arranged.
As a further aspect of the present application, the heat exchange tube group includes a first tube group and a second tube group distributed along an axial direction of the outer pressure bearing cylinder, the first tube group includes a plurality of heat exchange units which are longitudinally arranged in parallel and connected in parallel, the second tube group includes a plurality of heat exchange units which are transversely arranged in parallel and connected in series, each heat exchange unit includes a plurality of tubes and a collecting tube which communicates the plurality of tubes, the plurality of tubes are used as the heat exchange tube group and are covered by the inner guide cylinder, and the tubes are light tubes or finned tubes.
As a further aspect of the present application, the first tube bank and/or the second tube bank is suspended in the outer platen by a hanger or supported in the outer platen by a support assembly.
The invention has the beneficial effects that:
compared with the prior art, the waste heat recovery boiler suitable for the maleic anhydride device provided by the invention starts from a square single outer shell with poor pressure bearing capacity, and divides the original outer shell into two parts according to the working condition with larger pressure bearing: when the heat exchanger is used, a first heat exchange fluid circulates in the multiple groups of heat exchange tube groups, a second heat exchange fluid circulates in the inner guide cylinder, and the two heat exchange fluids are subjected to heat exchange cooling or heating through the tube walls. The shape of the inner guide cylinder is matched with the heat exchange tube bundle, so that the inner wall of the inner guide cylinder restricts and guides the flow direction of heat exchange fluid, the inner wall of the inner guide cylinder is fully contacted with the heat exchange tube bundle, the shell pass space is fully utilized, and the heat exchange efficiency is improved; because the inner guide cylinder is provided with the overflowing holes, heat exchange fluid in the inner guide cylinder can enter the transition space through the overflowing holes when flowing radially, fluid pressure is mainly applied to the circular outer pressure-bearing cylinder, the circular pressure-bearing capacity is strong, the checking requirement can be met without being too thick, the pressure on the inner guide cylinder is greatly reduced, the flow guide effect of the polygonal cylinder is kept, the pressure can be borne in a circular form, and the advantages of strong pressure-bearing capacity and good flow guide effect are achieved. Moreover, the inner guide cylinder can also have a certain supporting effect on the heat exchange tube set, and the structure is more stable.
Drawings
Fig. 1 is a schematic structural diagram of a waste heat recovery boiler suitable for a maleic anhydride plant in an embodiment, in which only one of a first tube bank on the left and a second tube bank on the right is shown, and the others are indicated by lines, and the number can be increased according to an actual process.
Fig. 2 is a sectional view taken along a-a in fig. 1.
Fig. 3 is a sectional view taken along B-B in fig. 1.
Fig. 4 is a schematic structural view of a prior art tube heat exchanger.
Reference numerals:
an outer pressure-bearing cylinder 1; an inner draft tube 2, a manhole 21;
a heat exchange tube group 3;
a transition space 4; an inlet and outlet cone 5; an inlet and outlet flow guide body 6;
a first tube group 7; a second tube set 8, a hanger 9 and a support assembly 10.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The waste heat recovery boiler suitable for the maleic anhydride device of the embodiment, as shown in fig. 1 to fig. 3, includes an outer pressure bearing cylinder 1, an inner guide cylinder 2, and a plurality of sets of heat exchange tube sets 3, each set of heat exchange tube set 3 is arranged along the radial direction of the outer pressure bearing cylinder 1, and inlets and outlets of the plurality of sets of heat exchange tube sets 3 respectively and hermetically penetrate through the side wall of the outer pressure bearing cylinder 1. The outer pressure bearing cylinder 1 is cylindrical, the inner guide cylinder 2 is arranged in the outer pressure bearing cylinder 1 in a penetrating mode, and the inner guide cylinder 2 and the outer pressure bearing cylinder 1 are arranged coaxially. The heat exchange tube bundle composed of the main body segments of the plurality of groups of heat exchange tube groups 3 is covered by the inner guide cylinder 2, the radial section of the inner guide cylinder 2 is a polygon adapted to the heat exchange tube bundle, and the heat exchange tube groups 3 pass through the inner guide cylinder 2. An annular transition space 4 is reserved between the inner guide cylinder 2 and the outer pressure-bearing cylinder 1, and the side wall of the inner guide cylinder 2 is provided with an overflowing hole, so that the inner guide cylinder 2 is communicated with the transition space 4. The two ends of the outer pressure bearing cylinder 1 are provided with inlet and outlet cones 5; two ends of the inner circulating cylinder are provided with tapered inlet and outlet flow guiding bodies 6, and small openings of the inlet and outlet flow guiding bodies 6 are connected with small openings of the inlet and outlet cones 5 in a connection mode.
Compared with the prior art, from the poor square single shell body of original bearing capacity, to the great operating mode of pressure-bearing, be divided into two original shell body: when the heat exchanger is used, a first heat exchange fluid circulates in the multiple groups of heat exchange tube groups 3, a second heat exchange fluid circulates in the inner guide cylinder 2, namely the first heat exchange fluid enters from left to right in the figure 1 and exits from right, the second heat exchange fluid enters the inlet guide body first, and then the two heat exchange fluids in the inner guide cylinder 2 are subjected to heat exchange cooling or heating through the tube walls. Because the shape of the inner guide cylinder 2 is matched with the heat exchange tube bundle, the inner wall of the inner guide cylinder 2 restricts and guides the flow direction of the heat exchange fluid, so that the inner guide cylinder is fully contacted with the heat exchange tube group 3, the shell pass space is fully utilized, and the heat exchange efficiency is improved. Because the inner guide cylinder 2 is provided with the overflowing holes, heat exchange fluid in the inner guide cylinder 2 can enter the transition space 4 through the overflowing holes when flowing radially, fluid pressure is mainly applied to the circular outer pressure bearing cylinder 1, the circular pressure bearing capacity is strong, the checking requirement can be met without being too thick, the pressure on the inner guide cylinder 2 is greatly reduced, the diversion effect of the polygonal cylinder is kept, the pressure can be borne in a circular form, and the advantages of strong pressure bearing capacity and good diversion effect are achieved.
In this embodiment, the heat exchange tube bundle is arranged in a tetragonal shape, the radial cross section of the inner guide cylinder 2 is in a corresponding square shape, and the shape of the radial cross section of the inner guide cylinder 2 can be changed into other polygons according to the arrangement of the heat exchange tube group 3.
In this embodiment, the inner guide cylinder 2 is a split structure, and includes a plurality of mutually assembled and fixed sub-modules, and the assembled position is between two adjacent heat exchange tube sets 3, and a plurality of manholes 21 are separately arranged along the length direction of the inner guide cylinder 2, so as to facilitate installation and maintenance.
In practice, the transition space 4 may be empty, or the transition space 4 may be filled with a flow-resisting and heat-insulating structure, which is made of heat-insulating cotton, gypsum, casting material or fiber blanket, for reducing the fluidity and reducing the pressure on the circular outer pressure-bearing cylinder 1.
In this embodiment, the heat exchange tube set comprises a first tube set 8 and a second tube set 9 distributed along the axial direction of the outer pressure bearing barrel 1, the first tube set 8 comprises a plurality of heat exchange units which are longitudinally arranged in parallel and are connected with each other, and the heat exchange fluid flows in and out from the lower part. The second tube 9 group comprises a plurality of heat exchange units (arranged perpendicular to the paper surface in fig. 1) which are arranged in parallel and transversely and connected in series, each heat exchange unit comprises a plurality of tubes and a collecting tube communicated with the plurality of tubes, the plurality of tubes are used as the heat exchange tube bundle and are covered by an inner guide cylinder, and the tubes are light tubes or finned tubes. The first tube bank 7 is suspended in the outer platen 1 by a hanger 9, and the second tube bank 8 is supported in the outer platen 1 by a support assembly 10.
. In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. A waste heat recovery boiler suitable for a maleic anhydride device is characterized in that: the heat exchanger comprises an outer pressure bearing cylinder, an inner guide cylinder and a plurality of groups of heat exchange pipe groups, wherein the outer pressure bearing cylinder is cylindrical, the inner guide cylinder is arranged in the outer pressure bearing cylinder in a penetrating manner, and the inlets and the outlets of the plurality of groups of heat exchange pipe groups respectively penetrate through the side wall of the outer pressure bearing cylinder in a sealing manner; the heat exchange tube bundle consisting of the main body sections of the multiple groups of heat exchange tube groups is covered by the inner guide cylinder, and the radial section of the inner guide cylinder is a polygon matched with the heat exchange tube bundle; a transition space is reserved between the inner guide cylinder and the outer pressure bearing cylinder, and the side wall of the inner guide cylinder is provided with an overflowing hole, so that the inner guide cylinder is communicated with the transition space.
2. The heat recovery boiler suitable for the maleic anhydride plant as set forth in claim 1, wherein: the two ends of the outer pressure bearing cylinder are provided with inlet and outlet cones; the two ends of the inner circulating cylinder are provided with tapered inlet and outlet flow deflectors, and the small openings of the inlet and outlet flow deflectors are connected with the small openings of the inlet and outlet cones in a connection mode.
3. The heat recovery boiler suitable for the maleic anhydride plant as set forth in claim 1, wherein: the heat exchange tube bundle is arranged in a tetragonal shape, and the radial section of the inner guide cylinder is in a corresponding square shape.
4. The heat recovery boiler suitable for the maleic anhydride plant as set forth in claim 1, wherein: the inner guide cylinder is of a split structure and comprises a plurality of mutually assembled and fixed sub-modules, and the assembling position is between two adjacent heat exchange tube sets.
5. The waste heat recovery boiler suitable for the maleic anhydride device according to claim 1 or 4, wherein: and a plurality of manholes are arranged along the length direction of the inner guide cylinder in a spaced manner.
6. The heat recovery boiler suitable for the maleic anhydride plant as set forth in claim 1, wherein: the transition space is filled with a flow-resisting heat-insulating structure.
7. The heat recovery boiler suitable for the maleic anhydride plant as set forth in claim 6, wherein: the flow-resisting heat-insulating structure is made of heat-insulating cotton, gypsum, casting material or fiber blanket.
8. The heat recovery boiler suitable for the maleic anhydride plant as set forth in claim 1, wherein: each group of heat exchange tube sets are arranged along the radial direction of the outer pressure bearing cylinder, and the inner guide cylinder and the outer pressure bearing cylinder are coaxially arranged.
9. The heat recovery boiler suitable for the maleic anhydride plant as set forth in claim 1, wherein: the heat exchange tube group comprises a first tube group and a second tube group which are distributed along the axial direction of the outer pressure bearing cylinder, the first tube group comprises a plurality of heat exchange units which are longitudinally arranged in parallel and are connected in parallel, the second tube group comprises a plurality of heat exchange units which are transversely arranged in parallel and are connected in series, each heat exchange unit comprises a plurality of tubes and a collecting tube communicated with the plurality of tubes, the plurality of tubes are used as the heat exchange tube group and are covered by the inner guide cylinder, and the tubes are light tubes or finned tubes.
10. The heat recovery boiler suitable for the maleic anhydride plant as set forth in claim 9, wherein: the first tube bank and/or the second tube bank are suspended in the outer pressure bearing cylinder by a suspension or supported in the outer pressure bearing cylinder by a support assembly.
CN202210277821.4A 2022-03-16 2022-03-16 Waste heat recovery boiler suitable for maleic anhydride device Pending CN114877717A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210277821.4A CN114877717A (en) 2022-03-16 2022-03-16 Waste heat recovery boiler suitable for maleic anhydride device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210277821.4A CN114877717A (en) 2022-03-16 2022-03-16 Waste heat recovery boiler suitable for maleic anhydride device

Publications (1)

Publication Number Publication Date
CN114877717A true CN114877717A (en) 2022-08-09

Family

ID=82668277

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210277821.4A Pending CN114877717A (en) 2022-03-16 2022-03-16 Waste heat recovery boiler suitable for maleic anhydride device

Country Status (1)

Country Link
CN (1) CN114877717A (en)

Similar Documents

Publication Publication Date Title
CN100386586C (en) Multiple shell pass screw baffle pipe shell type heat exchanger
CN101245971B (en) Enclosed cavity type heat exchanger
CN101846467B (en) Shell-tube heat exchanger
CN1120041C (en) Reactor comprising a contact tube bundle
CN109269334B (en) A kind of cast type microchannel compact heat exchanger and its manufacturing method
CA1080691A (en) Helical coil steam generator
CN105091634A (en) Baffle rod type heat exchanger with built-in expansion joint
CN218034577U (en) Waste heat recovery boiler suitable for maleic anhydride device
CN201772780U (en) Hair clip type rod-baffle heat exchanger
CN213041072U (en) Tube type heat exchanger
CN201187959Y (en) External diversion deflector rod type closed circulation water heat exchanger
CN114877717A (en) Waste heat recovery boiler suitable for maleic anhydride device
CN212931081U (en) U-shaped pipe heat exchanger
CN114152112B (en) Distribution plate for high-temperature gas cooler
CN111928215B (en) High-efficient compact steam generator
CN113154908A (en) Heat exchanger with hexagonal tube bundles in modular arrangement
CN100533037C (en) Continuous spiral traverse baffle double shell side combined special-shaped tube bundle heat exchanger
CN200993537Y (en) Coiled-pipe heat exchanger
CN2498159Y (en) Linear shape cooling boiler
CN220304333U (en) Tube type graphite heat exchanger with high heat exchange efficiency
CN220418179U (en) Bow-shaped baffle plate heat exchanger with small holes
CN101813435A (en) Liquid feed distributor for lamella heat exchanger
CN201672845U (en) Liquid feed distributor for lamella heat exchanger
CN209857696U (en) Winding tube type capillary heat exchanger
CN219347449U (en) Pull-rod-free tube-in-tube heat exchanger

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination