CN111457740A - Tank body structure of module combined type scrap steel preheating device - Google Patents

Tank body structure of module combined type scrap steel preheating device Download PDF

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Publication number
CN111457740A
CN111457740A CN202010414736.9A CN202010414736A CN111457740A CN 111457740 A CN111457740 A CN 111457740A CN 202010414736 A CN202010414736 A CN 202010414736A CN 111457740 A CN111457740 A CN 111457740A
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CN
China
Prior art keywords
material supporting
groove
body structure
bottom groove
scrap steel
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Pending
Application number
CN202010414736.9A
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Chinese (zh)
Inventor
谈存真
黄其明
张建
张豫川
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CISDI Engineering Co Ltd
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CISDI Engineering Co Ltd
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Priority to CN202010414736.9A priority Critical patent/CN111457740A/en
Publication of CN111457740A publication Critical patent/CN111457740A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
    • F27D13/002—Preheating scrap
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • 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
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)

Abstract

The invention relates to a groove body structure of a module combined type scrap steel preheating device, belonging to the field of electric furnace steelmaking.A bottom groove is of a U-shaped structure, a material supporting groove is of an L-shaped structure with material supporting bodies, two material supporting grooves are respectively arranged at the tops of two sides of the bottom groove and are detachably connected with the bottom groove, the material supporting bodies in the two material supporting grooves are oppositely arranged so that the two material supporting bodies are positioned at two sides of an inner cavity of the groove body structure enclosed by the material supporting grooves and the bottom groove, and the two material supporting bodies are spaced so as to form a stacking channel for allowing materials to fall into the bottom groove from the material supporting grooves.

Description

Tank body structure of module combined type scrap steel preheating device
Technical Field
The invention belongs to the field of electric furnace steelmaking, and particularly relates to a tank body structure of a module combined type scrap steel preheating device.
Background
The CONSTEE L horizontal continuous charging electric arc furnace uses the flue gas to preheat the scrap steel, which has certain energy-saving effect in the actual production, but the flue gas only can preheat the surface or the near surface of the scrap steel in the horizontal continuous charging process, so the average preheating temperature is not high, the energy-saving effect is limited, the flue gas in the shaft furnace can penetrate through the scrap steel layer, the scrap steel preheating effect is better, the electric energy consumed by smelting is lower, if the penetration type preheating can be realized in the horizontal continuous charging, and simultaneously, the primary energy can be selected to assist in preheating the scrap steel, which is very important for the energy saving and consumption reduction of the electric arc furnace.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a tank structure of a module-combined type scrap preheating device, so as to achieve penetration preheating of flue gas, and simultaneously, to use primary energy to assist in preheating scrap.
In order to achieve the purpose, the invention provides the following technical scheme:
a groove body structure of a module combined type scrap steel preheating device comprises a bottom groove and two material supporting grooves, wherein the bottom groove is of a U-shaped structure, the material supporting grooves are of an L-shaped structure with material supporting bodies, the two material supporting grooves are respectively arranged at the tops of two sides of the bottom groove and are detachably connected with the bottom groove, the material supporting bodies in the two material supporting grooves are oppositely arranged so that the two material supporting bodies are respectively positioned at two sides of an inner cavity of the groove body structure enclosed by the material supporting grooves and the bottom groove, and a stacking channel for allowing materials to fall from the material supporting grooves to the bottom groove is formed by spacing the two material supporting bodies.
Furthermore, the side wall of the bottom groove is provided with a plurality of holes.
Further, the L-type holding tank is mainly composed of a side wall provided in a vertical form and a holding body provided in a form that an upper surface thereof is horizontal or inclined with respect to the side wall, and the upper surface of the holding body is inclined downward toward the center of the bottom tank when inclined.
Furthermore, a material baffle plate is arranged on the expenditure end of the material supporting body close to one side of the center of the bottom groove.
Further, the bottom surface of the baffle plate is spaced from the inner side surface of the bottom groove by a certain distance to form an open channel (corresponding to the opening hole).
Further, a material blocking strip is arranged on the inner side surface of the bottom groove; the two material blocking strips are respectively and correspondingly arranged between the material blocking plates and the side walls of the two material supporting grooves; the bottom surface of the material baffle plate and the top surface of the material blocking strip are spaced at a certain distance to form an open channel.
Further, along the material direction of delivery, the open channel enlarges gradually.
Further, the connecting part between the material supporting groove and the bottom groove is positioned on the outer side of the groove body structure.
Further, the bottom groove and the material supporting groove are both of water cooling structures.
Further, heat insulating materials are arranged on the inner surfaces of the bottom groove and the material supporting groove.
Furthermore, a plurality of groove body structures enclosed by the material supporting grooves and the bottom grooves are sequentially spliced along the material conveying direction; the openings at the two sides of each bottom groove are alternately arranged at intervals.
The invention has the beneficial effects that:
(1) the split structure of the module combination type is adopted, so that the processing and the manufacturing are convenient, and the block maintenance and the replacement are facilitated;
(2) the material baffle plate and the material blocking strip can prevent excessive scrap steel from entering the cavity, provide sufficient channel space for flame generated by flue gas, burners, nozzles and the like, contribute to shortening the width dimension of the material supporting body and improve the preheating effect of the scrap steel;
(3) the opening channel is gradually enlarged, so that the material supporting body cannot block the scrap steel layer, and smooth conveying is ensured;
(4) the pile type of the waste steel in the groove body is reconstructed, a cavity formed by the support body and the groove bottom can be used as a smoke dispersion cavity, high-temperature smoke can be dispersed into gaps of the waste steel through the smoke dispersion cavity, and the smoke dispersion cavity can preheat the side face of the waste steel pile and also realize penetration type preheating.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a front view of a tank structure;
FIG. 2 is a top view of the tank structure;
FIG. 3 is an isometric view of a channel structure;
FIG. 4 is an axial cross-sectional view of the channel structure;
FIG. 5 is an isometric view of a single apertured channel structure;
figure 6 is an isometric view of a channel structure without an aperture.
Reference numerals:
the device comprises a bottom groove 1, a material supporting groove 2, a connecting part 3, an opening 4, a water cooling structure 6, a material layer 7 and a smoke dispersion cavity 8;
the material stacking device comprises a groove bottom 11, a material blocking strip 12, a side wall 21, a material supporting body 22, a material blocking plate 221, a material stacking channel H, a discharge end A, an opening channel L1 and an opening channel L2.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1 to 4, the groove body structure of the module combined scrap preheating device comprises a bottom groove 1 and two material supporting grooves 2, wherein the bottom groove 1 is of a U-shaped structure, the material supporting grooves 2 are of an L-shaped structure with material supporting bodies 22, the two material supporting grooves 2 are respectively arranged at the tops of two sides of the bottom groove 1 and are detachably connected with the bottom groove 1, the material supporting bodies 22 in the two material supporting grooves 2 are oppositely arranged so that the two material supporting bodies 22 are both positioned at two sides of an inner cavity of the groove body structure enclosed by the material supporting grooves 2 and the bottom groove 1, the two material supporting bodies 22 are spaced to form a material stacking channel H for allowing materials to fall from the material supporting grooves 2 to the bottom groove 1, and a plurality of openings 4 are formed in the side wall of the bottom groove 1.
In the groove body structure, two side walls of a U-shaped bottom groove 1 are provided with opening holes 4 at intervals, the opening holes 4 can be used for installing burners, nozzles or introducing high-temperature gas (such as hot air, smoke gas) and the like, while an L-shaped material supporting groove 2 mainly comprises a side wall 21 and a material supporting body 22, the side wall 21 is arranged in a vertical mode, the material supporting body 22 is arranged in a mode that the upper surface of the material supporting body is horizontal or inclined relative to the side wall 21, after the material supporting groove 2 is arranged on two sides of the bottom groove 1, the inner side surface of the side wall 21 in the material supporting groove 2 is flush with the inner side surface of the side wall of the bottom groove 1, the material supporting body 22 plays a role of supporting and erecting a material layer (scrap steel), and when the upper surface of the material supporting body 22 is arranged in an inclined.
Specifically, a stacking channel H capable of passing through materials is reserved between two material supporting bodies 22 in the groove body structure, a material layer 7 to be conveyed is filled in an inner cavity of the groove body structure, part of materials can slide down and be accumulated in a bottom groove 1 below the material supporting bodies 22 through the stacking channel H, and the material sliding down to the bottom groove 1 through the stacking channel H can be concentrated at the center of the bottom groove 1 due to the fact that the material supporting bodies 22 have certain supporting and shielding effects. Because of having trompil 4 on the lateral wall of kerve 1 for high temperature flame/flue gas/hot-blast etc. can enter into in the kerve 1 through trompil 4, thereby preheats the material in the kerve 1. A dust removal channel (conventional arrangement, not shown in the figure) is arranged above the tank body structure, and under the suction action of the dust removal channel, high-temperature flame/flue gas/hot air and the like entering the bottom tank 1 through the opening 4 can pass through a material layer above the bottom tank 1 from the material in the bottom tank 1 to the top, so that penetrating preheating is realized.
In the groove structure, the arrangement of the material supporting body 22 and the opening 4 has another important function: because the material supporting body 22 is positioned above the open hole 4, the stacking channel H is corresponding to the middle position of the bottom groove 1, so that the material can only be stacked at the middle position of the bottom groove 1 corresponding to the stacking channel H and the open hole 4 cannot be blocked. The material stacking channel H is sealed by the material, and the material supporting body 22 is also paved, so that the side wall of the bottom groove 1, the material supporting body 22 above the bottom groove 1 and the material layer 7 in the central area of the bottom groove jointly form a smoke dispersion cavity 8 which can run through the whole groove body structure. The smoke dispersion cavity 8 can also be used as a preheating channel on two sides of the material, so that the upper end surface and two side surfaces of the material in the groove body structure can be simultaneously preheated. It is to be emphasized that such a form also improves the penetration of the fumes in the pile (scrap) and makes the preheating thereof more complete and uniform.
Preferably, in order to realize the air guide function of the material supporting body 22, through holes can be correspondingly formed on the material supporting body 22.
The supporting body 22 in the supporting trough 2 is preferably arranged in a way that the upper surface inclines downwards towards the center of the trough, so that the scrap steel on the supporting body can be more easily gathered towards the central part of the bottom trough and can be more easily preheated by high-temperature flue gas.
The above-mentioned tank structure is also explained as follows: the side wall of the bottom groove 1 can be provided with the number of the openings 4 according to the requirement, such as one opening 4 (see figure 5); the side walls of the tank 1 may also be provided without openings 4 (see fig. 6). When the opening 4 is not arranged, on the premise that the side wall of the bottom groove 1, the material supporting body 22 above the bottom groove 1 and the material layer 7 in the central area of the bottom groove jointly form a smoke dispersion cavity 8 which can run through the whole groove body structure, the smoke of the electric arc furnace can be directly introduced from the end of the groove body structure by means of the smoke dispersion cavity 8, namely, the side part of the material layer 7 is directly preheated and the penetration type is preheated through the channel.
As a further optimization of the scheme, a material baffle 221 is arranged on an expenditure end A on one side of the material supporting body 22 close to the center of the bottom groove 1, a certain distance is reserved between the bottom surface of the material baffle 221 and the inner side surface of the bottom groove 11 of the bottom groove 1 to form an open channel L1 (corresponding to the open hole), specifically, the upper end surface of the material baffle 221 vertically arranged at the end of the material supporting body 22 is higher than the lowest position of the upper end surface of the material supporting body 22, and the lower end surface of the material baffle 221 extends out of the end surface of the bottom part of the material supporting body 22, so that the upper end and the lower end of the material baffle 221 can separate the material in the process that the material slides into the bottom groove 1, excessive steel scrap is prevented from entering the smoke dispersion cavity 8, the problem that the side wall open hole 4 of the bottom groove 1 is blocked or blocked is prevented, and the smoothness of high-.
As a further optimization of the scheme, the material blocking strips 12 are arranged on the inner side face of the bottom groove 11 of the bottom groove 1, the two material blocking strips 12 are respectively and correspondingly arranged between the material blocking plates 221 of the two material supporting grooves 2 and the side wall 21, namely the material blocking strip 12 arranged on the left side of the bottom groove 11 is arranged between the material blocking plate 221 of the left material supporting groove 2 and the side wall 21, and the material blocking strip 12 arranged on the right side of the bottom groove 11 is arranged between the material blocking plate 221 of the right material supporting groove 2 and the side wall 21.
As a further optimization of the scheme, the opening channel L1 (a gap formed between the bottom surface of the material baffle plate 221 and the inner side surface of the groove bottom 11 of the bottom groove 1) or the opening channel L2 (a gap formed between the bottom surface of the material baffle plate and the top surface of the material blocking strip) is gradually enlarged along the material conveying direction, namely, the two dimensions in FIG. 4 meet the condition that h2 is greater than h1, wherein h2 is the vertical height of the gap between the bottom surface of the material baffle plate at the discharging end in the groove body structure and the inner side surface of the top surface/groove bottom 11 of the material blocking strip, and the vertical height of the gap between the bottom surface of the material baffle plate at the feeding end in the groove body structure of h1 and the inner side surface of the top surface/groove bottom 11 of the material blocking strip.
The vertical height of the gap between the bottom surface of the material blocking plate 221 and the top surface of the material blocking bar 12 (or the inner side surface of the groove bottom 11) can be adjusted by changing the height of the material blocking bar, shortening the length of the material blocking plate extending out of the bottom end of the material supporting body and the like.
In the groove body structure, the bottom groove 1 and the material supporting groove 2 are different in failure and service life, the groove body is designed into a split structure, maintenance and replacement are allowed, and processing and manufacturing are more convenient. Two support connecting portion 3 between silo 2 and kerve 1 in this embodiment are located the outside of cell body structure, set up like this and both made things convenient for the assembly, can not obstruct the normal transport of steel scrap material yet.
In this embodiment, the bottom trough 1 and the material supporting trough 2 are both water cooling structures 6, and their respective cooling water loops are located outside the trough body, so that the reliability of the device working at high temperature can be maintained. In order to reduce heat loss and improve heat utilization efficiency, heat insulating materials can be properly sprayed or coated on the inner surfaces of the bottom groove 1 and the material supporting groove 2.
The preheating channel with the multi-section groove body structure can also meet the requirement that h2 is h1 in each section of groove body structure, so that the width dimension of the opening channel L1 or the opening channel L2 is gradually enlarged along the material conveying direction, the height of the opening channel in the next section of groove body structure can be larger than that of the opening channel in the previous section of groove body structure, under the condition that the safety distance between the scrap steel and the side wall opening 4 is ensured, the width dimension of the material supporting plate 22 in the groove body structure can be effectively shortened, and the preheating effect of the scrap steel can be improved.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.

Claims (10)

1. A groove body structure of a module combined type scrap steel preheating device is characterized by comprising a bottom groove and two material supporting grooves, wherein the bottom groove is of a U-shaped structure, the two material supporting grooves are of L-shaped structures with material supporting bodies, the two material supporting grooves are respectively arranged at the tops of two sides of the bottom groove and are detachably connected with the bottom groove, the material supporting bodies in the two material supporting grooves are oppositely arranged so that the two material supporting bodies are positioned on two sides of an inner cavity of the groove body structure defined by the material supporting grooves and the bottom groove, and a stacking channel for allowing materials to fall into the bottom groove from the material supporting grooves is formed by spacing the two material supporting bodies.
2. The vessel body structure of a module combination type scrap preheating apparatus according to claim 1, wherein the L type holding tank is mainly composed of a sidewall provided in a vertical form and a holding body provided in a form that an upper surface thereof is horizontal or inclined with respect to the sidewall, and the upper surface of the holding body is inclined downward toward the center of the bottom vessel when inclined.
3. The tank body structure of the module combined type scrap steel preheating device according to claim 2, characterized in that: a material baffle plate is arranged on the extending end of the material supporting body close to one side of the center of the bottom groove.
4. The tank body structure of the module combined type scrap steel preheating device according to claim 3, characterized in that: the bottom surface of the material baffle plate and the inner side surface of the bottom groove are spaced at a certain distance to form an open channel.
5. The tank body structure of the module combined type scrap steel preheating device according to claim 4, wherein: the inner side surface of the bottom groove is provided with a material blocking strip; the two material blocking strips are respectively and correspondingly arranged between the material blocking plates and the side walls of the two material supporting grooves; the bottom surface of the material baffle plate and the top surface of the material blocking strip are spaced at a certain distance to form an open channel.
6. The tank body structure of the module combined type scrap steel preheating device according to any one of claims 1 to 5, characterized in that: the side wall of the bottom groove is provided with a plurality of openings.
7. The tank body structure of the module combined type scrap steel preheating device according to claim 4 or 5, wherein: along the material conveying direction, the opening channel is gradually enlarged.
8. The tank body structure of the module combined type scrap steel preheating device according to claim 6, wherein: the connecting part between the material supporting groove and the bottom groove is positioned at the outer side of the groove body structure.
9. The tank body structure of the module combined type scrap steel preheating device according to claim 6, wherein: the bottom groove and the material supporting groove are both of water cooling structures; and heat insulating materials are arranged on the inner surfaces of the bottom groove and the material supporting groove.
10. The tank body structure of the module combined type scrap steel preheating device according to claim 9, wherein: a plurality of groove body structures enclosed by the material supporting grooves and the bottom grooves are sequentially spliced along the material conveying direction; the openings at the two sides of each bottom groove are alternately arranged at intervals.
CN202010414736.9A 2020-05-15 2020-05-15 Tank body structure of module combined type scrap steel preheating device Pending CN111457740A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010414736.9A CN111457740A (en) 2020-05-15 2020-05-15 Tank body structure of module combined type scrap steel preheating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010414736.9A CN111457740A (en) 2020-05-15 2020-05-15 Tank body structure of module combined type scrap steel preheating device

Publications (1)

Publication Number Publication Date
CN111457740A true CN111457740A (en) 2020-07-28

Family

ID=71682742

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010414736.9A Pending CN111457740A (en) 2020-05-15 2020-05-15 Tank body structure of module combined type scrap steel preheating device

Country Status (1)

Country Link
CN (1) CN111457740A (en)

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