CN216744303U - Coal economizer equipment of dry quenching flue gas waste heat boiler - Google Patents

Coal economizer equipment of dry quenching flue gas waste heat boiler Download PDF

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Publication number
CN216744303U
CN216744303U CN202122081129.8U CN202122081129U CN216744303U CN 216744303 U CN216744303 U CN 216744303U CN 202122081129 U CN202122081129 U CN 202122081129U CN 216744303 U CN216744303 U CN 216744303U
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China
Prior art keywords
flue gas
dry quenching
waste heat
gas waste
heat boiler
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CN202122081129.8U
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Chinese (zh)
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林仟国
程立春
杨玉慧
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Jiangsu Dongjiu Heavy Industry Co ltd
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Jiangsu Dongjiu Heavy Industry Co ltd
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Abstract

The utility model discloses a coke dry quenching flue gas waste heat boiler economizer device, and belongs to the technical field of design and manufacture of auxiliary devices of thermal energy engineering. The economizer device of the dry quenching flue gas waste heat boiler comprises an economizer and a fixed hanger, wherein two ends of the fixed hanger are suspended on a framework of the dry quenching flue gas waste heat boiler through connecting rods, and a heat exchange tube group of the economizer is suspended at the lower end of the fixed hanger through a horse clamping device. The economizer inlet header is communicated with a water pipe system of the coke dry quenching flue gas waste heat boiler, and the outlet header is communicated with a steam drum of the coke dry quenching flue gas waste heat boiler. The utility model solves the problems of low heat transfer efficiency of the heat exchange tube group, poor overall thermal expansion and serious erosion and abrasion of the elbow area at the end part of the heat transfer tube bundle in the operation process of the coke dry quenching flue gas waste heat boiler economizer device in the prior art.

Description

Coal economizer equipment of dry quenching flue gas waste heat boiler
Technical Field
The utility model relates to an economizer device, in particular to a coke dry quenching flue gas waste heat boiler economizer device.
Background
Dry quenching is a quenching method in which red coke is cooled with an inert gas as compared to wet quenching. In the dry quenching process, red coke is loaded from the top of a dry quenching furnace, low-temperature inert gas is blown into a red coke layer of a cooling section of the dry quenching furnace by a circulating fan to absorb the sensible heat of the red coke, the cooled coke is discharged from the bottom of the dry quenching furnace, high-temperature inert gas discharged from an annular flue of the dry quenching furnace flows through a dry quenching flue gas waste heat boiler to carry out heat exchange, the waste heat boiler generates steam, the cooled inert gas is blown into the dry quenching furnace again by the circulating fan, and the inert gas is recycled in a closed system.
In the actual operation process, the coal economizer equipment of the coke dry quenching flue gas waste heat boiler has the problems of low heat transfer efficiency of a heat exchange tube group, poor overall thermal expansion and serious erosion and abrasion of an elbow area at the end part of the heat transfer tube bundle. Therefore, the development of the coke dry quenching flue gas waste heat boiler economizer device with long service life through modern industrial equipment is imperative to the coke dry quenching flue gas waste heat recovery equipment industry.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide coke dry quenching flue gas waste heat boiler economizer equipment which solves the problems of low heat transfer efficiency of a heat exchange tube group, poor overall thermal expansion and serious erosion and abrasion of an elbow area at the end part of a heat transfer tube bundle in the operation process of the coke dry quenching flue gas waste heat boiler economizer equipment.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a dry quenching flue gas exhaust-heat boiler economizer equipment, includes economizer and fixed gallows, the both ends of fixed gallows hang in midair on the framework of dry quenching flue gas exhaust-heat boiler through the connecting rod, economizer heat exchange tube nest hangs through pressing from both sides the horse device hang the lower extreme of fixed gallows. The economizer inlet header is communicated with a water pipe system of the dry quenching flue gas waste heat boiler, and the outlet header is communicated with a steam drum of the dry quenching flue gas waste heat boiler.
Preferably, the heat exchange tube group consists of a horizontally reciprocating serpentine tube bundle assembled inlet header and an outlet header; the flow direction of the soft water in the heat exchange pipe group is opposite to the flow direction of the dry quenching flue gas.
Preferably, the serpentine tube bundle is an open-toothed helical finned tube.
Preferably, the end bend region of the serpentine tube bundle is provided with an anti-wear shield.
Preferably, the serpentine tube bundle of the heat exchange tube group is provided with a flexible metal sealing device at the position of penetrating through the furnace wall.
The utility model has the beneficial effects that:
1. by adopting the coal economizer device for the coke dry quenching flue gas waste heat boiler, which adopts the technical scheme of the utility model, the heat exchange tube group is hung at the lower end of the fixed hanging bracket through the horse clamping device, and the heat exchange tube group is free to expand without restriction by adopting a non-solid connection mode.
2. The snakelike tube bank of heat exchange nest of tubes adopts the type of gulleting spiral finned tube, has increased heat transfer area, has increased the flue gas disturbance, has improved heat transfer efficiency greatly.
3. The snakelike tube bank of heat exchange nest of tubes passes the brickwork position and is equipped with flexible metal seal device, has increased snakelike tube bank's breathing compensation has effectively avoided breathing stress to cause the damage to snakelike tube bank.
4. An anti-abrasion shielding device is arranged in an elbow area at the end part of the serpentine tube bundle of the heat exchange tube group, so that erosion and abrasion of a local flow field of flue gas to the serpentine tube bundle are effectively avoided; greatly prolonging the service life of the equipment.
5. The technical scheme of the utility model realizes the stable operation of the economizer device of the coke dry quenching flue gas waste heat boiler, provides powerful technical support for realizing the high-efficiency waste heat recovery of the coke dry quenching flue gas waste heat boiler, and has better economic benefit.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side (cut away) view of the present invention;
FIG. 3 is an enlarged view of node I of FIG. 1;
FIG. 4 is a schematic view of the fixed hanger and clamping device of the present invention;
in the figure: 1. the device comprises a fixed hanging bracket, 2. connecting rods, 3. a framework, 4. a heat exchange tube group, 5. a clamping device, 6. an inlet header, 7. an outlet header, 8. a snake-shaped tube bundle, 9. an anti-abrasion shielding device and 10. a flexible metal sealing device.
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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention. The relative arrangement of the components and steps, expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may also be oriented in other different ways (rotated 90 degrees or at other orientations).
As shown in figure 1, the coal economizer device for the coke dry quenching flue gas waste heat boiler comprises a fixed hanger 1, wherein two ends of the fixed hanger 1 are suspended on a framework 3 of the coke dry quenching flue gas waste heat boiler through connecting rods 2, and a coal economizer heat exchange tube group 4 is suspended at the lower end of the fixed hanger 1 through a horse clamping device 5. The economizer inlet header 6 is communicated with a water pipe system of the dry quenching flue gas waste heat boiler, and the outlet header 7 is communicated with a steam drum of the dry quenching flue gas waste heat boiler.
The heat exchange tube group 4 is formed by assembling an inlet header 6 and an outlet header 7 on a horizontally reciprocating serpentine tube bundle 8; the flow direction of the soft water in the heat exchange pipe group 4 is opposite to the flow direction of the dry quenching flue gas.
The serpentine tube bundle 8 is a toothed helical finned tube.
The elbow area at the end of the serpentine tube bundle 8 is provided with an anti-abrasion shielding device 9.
The serpentine tube bundle 8 of the heat exchange tube group penetrates through the furnace wall and is provided with a flexible metal sealing device 10.
When the coke dry quenching flue gas waste heat boiler operates, coke dry quenching flue gas flows through the coal economizer heat exchange tube group 4 from top to bottom. Soft water enters the economizer from the inlet header 6, the soft water completes the counter-current heat exchange with the dry quenching flue gas in the economizer heat exchange tube group 4, and the soft water is heated to the rated temperature and is sent to the dry quenching flue gas waste heat boiler steam pocket through the outlet header 7.

Claims (5)

1. The economizer equipment for the dry quenching flue gas waste heat boiler comprises an economizer and is characterized by further comprising a fixed hanging bracket, wherein two ends of the fixed hanging bracket are suspended on a framework of the dry quenching flue gas waste heat boiler through connecting rods, and a heat exchange tube group of the economizer is suspended at the lower end of the fixed hanging bracket through a horse clamping device; an inlet collection box of the economizer is communicated with a water pipe system of the dry quenching flue gas waste heat boiler, and an outlet collection box of the economizer is communicated with a steam drum of the dry quenching flue gas waste heat boiler.
2. The coke dry quenching flue gas waste heat boiler economizer apparatus as claimed in claim 1 wherein the heat exchange tube bank is composed of horizontally reciprocating serpentine tube bundle fitted with inlet header, outlet header; the flow direction of the soft water in the heat exchange pipe group is opposite to the flow direction of the dry quenching flue gas.
3. The coke dry quenching flue gas waste heat boiler economizer apparatus of claim 2 wherein the serpentine tube bundle is a scalloped helical finned tube.
4. The dry quenching flue gas waste heat boiler economizer apparatus of claim 2 or 3 wherein the serpentine tube bundle end bend region is provided with an anti-wear shield.
5. The coke dry quenching flue gas waste heat boiler economizer apparatus as claimed in claim 1 wherein the serpentine tube bundle of the heat exchange tube bank is provided with a flexible metal seal device across the furnace wall.
CN202122081129.8U 2021-08-31 2021-08-31 Coal economizer equipment of dry quenching flue gas waste heat boiler Active CN216744303U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122081129.8U CN216744303U (en) 2021-08-31 2021-08-31 Coal economizer equipment of dry quenching flue gas waste heat boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122081129.8U CN216744303U (en) 2021-08-31 2021-08-31 Coal economizer equipment of dry quenching flue gas waste heat boiler

Publications (1)

Publication Number Publication Date
CN216744303U true CN216744303U (en) 2022-06-14

Family

ID=81908404

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122081129.8U Active CN216744303U (en) 2021-08-31 2021-08-31 Coal economizer equipment of dry quenching flue gas waste heat boiler

Country Status (1)

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CN (1) CN216744303U (en)

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