CN205873917U - Box heat exchanger - Google Patents
Box heat exchanger Download PDFInfo
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- CN205873917U CN205873917U CN201620533185.7U CN201620533185U CN205873917U CN 205873917 U CN205873917 U CN 205873917U CN 201620533185 U CN201620533185 U CN 201620533185U CN 205873917 U CN205873917 U CN 205873917U
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Abstract
The utility model discloses a box heat exchanger, include: box and at least one heat exchange tube, be formed with inlet and overflow mouth on the box, the heat exchange tube is established in the box, the one end of heat exchange tube has the feed inlet and the other end has the discharge gate. According to the utility model discloses a box heat exchanger, through set up the heat exchange tube in the box, and use box heat exchanger in row's salt process of bayer process production aluminium oxide, therefore, can evaporate the mother liquor with the height carries and cools down in box heat exchanger, high solubility of evaporating the sodium carbonate in the mother liquor has been reduced effectively, thereby the volume of appearing of sodium carbonate has been improved, and then reduced the bayer process effectively and produced the sodium carbonate content in the aluminium oxide circulating mother liquor, sodium carbonate has been reduced to follow -up production processes's influence and the damage that causes equipment, energy -conservation has been reached, cost is reduced the mesh, and box heat exchanger's simple structure, facilitating machining.
Description
Technical field
This utility model relates to alumina producing Bayer process technique, especially relates to a kind of box-type heat exchanger.
Background technology
In correlation technique, in alumina producing Bayer process technique, due to caustic alkali and the carbonate in Ore and sky
The result of the carbon dioxide effect in gas, mother solution circulates all some caustic alkali each time and becomes soda, and sodium carbonate accumulates
To a certain extent will crystallization, bring serious harm to production, it is mainly manifested in following several respects: (1), sodium carbonate exist
In alumina flash-pot during crystallization, the discharging that attenuates of punishment in advance caliber can be made smooth, time serious, even cause unit to stop,
Flash-pot exhaust steam strip can be made simultaneously, be formed at dissolution inner-walls of duct and scab, reduce the heat transfer coefficient of pipeline, after having a strong impact on
Sequence produces；(2), in evaporation process, along with mother liquid concentration is stepped up, sodium carbonate concentration in mother solution reaches saturated and crystallizes
Separate out, fouling on vaporizer tube wall, reduce the heat transfer coefficient of vaporizer, make vaporizer production capacity be substantially reduced, give simultaneously and steam
Send out device operation and bring exceptional hardship；(3), sodium carbonate in process of production can not aluminium oxide in dissolution Ore, but with solution one
Rise be heated, dilute, evaporation etc., participate in each cyclic process, make energy consumption in production process raise；(4), in solution sodium carbonate and other
Organic existence, increases the viscosity of solution, all can cause certain to the decomposition of crystal seed of liquid fine straining settlement separate, thick, seminal fluid
Impact.
The rising of sodium carbonate solubility with temperature in mother solution and increase, i.e. temperature is the lowest, and the sodium carbonate of precipitation is the most.
But, in correlation technique, generally use the mode of Temperature fall to carry out the precipitation operation of sodium carbonate so that the sodium carbonate in mother solution
Cannot fully separate out, affect the salt discharge operation of postorder.
Utility model content
This utility model is intended at least to solve one of technical problem present in prior art.To this end, it is of the present utility model
One purpose is to propose a kind of box-type heat exchanger, and this box-type heat exchanger can be effectively reduced mother solution in Bayer process production technology
Temperature, improve sodium carbonate amount of precipitation.
According to box-type heat exchanger of the present utility model, including: casing, described casing is formed inlet and overfall；
With at least one heat exchanger tube, described heat exchanger tube is located in described casing, and one end of described heat exchanger tube has charging aperture and the other end
There is discharging opening.
According to box-type heat exchanger of the present utility model, by arranging heat exchanger tube in casing, and box-type heat exchanger is applied
In the salt discharge operation of alumina producing Bayer process, thus, height can be steamed mother solution and be delivered in box-type heat exchanger lower the temperature,
Significantly reduce the dissolubility of the high sodium carbonate steamed in mother solution, thus improve the amount of precipitation of sodium carbonate, and then effectively drop
Carbonate content in low alumina producing Bayer process circulating mother liquor, reduce sodium carbonate on the impact of follow-up producing process with
And the damage that equipment caused, reach energy-conservation, reduced the purpose of cost, and the simple in construction of box-type heat exchanger, it is simple to processing.
It addition, according to box-type heat exchanger of the present utility model, it is also possible to have a following additional technical characteristic:
According to embodiments more of the present utility model, described box-type heat exchanger, farther include: at least one dividing plate, institute
State dividing plate to be located in described casing, described dividing plate described box house is separated into two ends respectively with described inlet and described overflow
The runner of head piece connection, described runner includes the multiple subflow roads being sequentially communicated, at least in wherein said multiple subflow roads
Described heat exchanger tube it is provided with in individual.
Specifically, one end of described dividing plate is connected with the inwall of described casing, and the other end of described dividing plate and described case
The sidewall of body is spaced apart from each other.
Alternatively, described casing is formed as rectangular shape, and two sidewalls of described dividing plate extend respectively to and described case
The corresponding inwall of body is connected.
Specifically, described inlet is formed at the bottom of a sidewall of described casing, and described overfall is formed at described
The top of another sidewall of casing.
According to embodiments more of the present utility model, described dividing plate is multiple, and the plurality of dividing plate is in described casing
Interlaced arrangement is to limit the runner of S-shaped.
Alternatively, described dividing plate is horizontally disposed with.
According to embodiments more of the present utility model, in each in the plurality of subflow road, it is provided with described heat exchanger tube.
Alternatively, the S-shaped curve extension of described heat exchanger tube.
According to embodiments more of the present utility model, the two ends of described heat exchanger tube and bending section are positioned at outside described casing.
Additional aspect of the present utility model and advantage will part be given in the following description, and part will be from explained below
In become obvious, or recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage are from combining general the accompanying drawings below description to embodiment
Become obvious and easy to understand, wherein:
Fig. 1 is the structural representation of the box-type heat exchanger according to this utility model embodiment；
Fig. 2 is the left view of the box-type heat exchanger according to this utility model embodiment；
Fig. 3 is another structural representation of the box-type heat exchanger according to this utility model embodiment.
Reference:
Box-type heat exchanger 100,
Casing 1, inlet 11, overfall 12,
Heat exchanger tube 2, charging aperture 21, discharging opening 22,
Dividing plate 3.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, the most ad initio
Represent same or similar element to same or similar label eventually or there is the element of same or like function.Below by ginseng
It is exemplary for examining the embodiment that accompanying drawing describes, and is only used for explaining this utility model, and it is not intended that to of the present utility model
Limit.
In description of the present utility model, it is to be understood that term " length ", " width ", " thickness ", " on ", D score,
The orientation of the instruction such as "front", "rear", "left", "right", " vertically ", " level ", " interior ", " outward " or position relationship are for based on accompanying drawing institute
The orientation shown or position relationship, be for only for ease of description this utility model and simplify description rather than instruction or hint indication
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this practicality
Novel restriction.Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or imply relatively heavy
The property wanted or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed
Or implicitly include one or more this feature.In description of the present utility model, except as otherwise noted, " multiple "
It is meant that two or more.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be fix connection, it is also possible to be to removably connect, or integratedly
Connect；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Language concrete meaning in this utility model.
In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it
D score can include that the first and second features directly contact, it is also possible to includes that the first and second features are not directly contact but logical
Cross the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " include
One feature is directly over second feature and oblique upper, or is merely representative of fisrt feature level height higher than second feature.First is special
Levy second feature " under ", " lower section " and " below " include fisrt feature directly over second feature and oblique upper, or only
Represent that fisrt feature level height is less than second feature.
Below with reference to Fig. 1-Fig. 3, the box-type heat exchanger 100 according to this utility model embodiment is described.Wherein, box type heat-exchanger
Device 100 may be used in the salt discharge operation in alumina producing Bayer process technique.
As shown in Figure 1-Figure 3, according to the box-type heat exchanger 100 of this utility model embodiment, including casing 1 and at least one
Heat exchanger tube 2.Wherein, heat exchanger tube 2 can be one, it is also possible to for multiple.Alternatively, heat exchanger tube 2 can be stainless steel tube such as
20m2Stainless steel tube etc., but be not limited to this.Thus, the corrosion resistance of heat exchanger tube 2 can be improved, improve the use longevity of heat exchanger tube 2
Life, thus significantly reduce use cost and maintenance cost.
Specifically, casing 1 is formed with inlet 11 and overfall 12.Wherein, inlet 11 and overfall 12 is transversal
Face all can be formed as circle etc., but is not limited to this.
Heat exchanger tube 2 is located in casing 1, one end (such as, the left end in Fig. 2) of heat exchanger tube 2 have charging aperture 21 and another
End (such as, the right-hand member in Fig. 2) has discharging opening 22.For example, referring to Fig. 1 and Fig. 2, casing 1 can be formed as rectangular shape
Deng, but it is not limited to this.Inlet 11 can be formed at the bottom of a sidewall (such as, the left side wall in Fig. 1) of casing 1, overflows
Head piece 12 is formed at the top of another sidewall (such as, the rear wall in Fig. 1) of casing 1.Thus, cooling medium such as condenses
Water can enter casing 1 from the inlet 11 of casing 1, and the condensed water after heat exchange can flow out from overfall 12, thus can heat exchanging
Mother solution in material in pipe 2 such as alumina producing Bayer process cools, and extends cooling medium and such as condense
Water and the time of contact of heat exchanger tube 2, improve heat transfer effect.
Such as, during alumina producing Bayer process, can with pump etc. by the evaporation mother solution of high concentration by heat exchanger tube 2
Charging aperture 21 is delivered in box-type heat exchanger 100, makes mother solution such as cool down water with the cooling medium in casing 1 and carries out heat exchange, with
Mother solution is lowered the temperature.Thus, the temperature of mother solution can be effectively reduced, thus significantly reduce the molten of the sodium carbonate in mother solution
Xie Du, improves the amount of precipitation of sodium carbonate, and then significantly reduces the sodium carbonate in alumina producing Bayer process circulating mother liquor
Content, reduces sodium carbonate to the impact on follow-up producing process and the damage that causes equipment, has reached energy-conservation, reduced into
This purpose.
Alternatively, the flow direction of the material such as mother solution in heat exchanger tube 2 and cooling medium such as condensed water in casing 1
Flow direction is contrary.For example, referring to Fig. 1 and combine Fig. 2, the inlet 11 of casing 1 can be formed at the right side of the left side wall of casing 1
Bottom, the overfall 12 of casing 1 can be formed at the upper left quarter of the rear wall of casing 1, and the charging aperture 21 of heat exchanger tube 2 can be formed
In the side away from inlet 11, the discharging opening 22 of heat exchanger tube 2 is formed adjacent to the side of inlet 11.Thus, further
Extend the time of contact of cooling medium and the material in heat exchanger tube 2, thus further increasing heat transfer effect, improve case
The heat exchange efficiency of formula heat exchanger 100.
Box-type heat exchanger 100 according to this utility model embodiment, by arranging heat exchanger tube 2, and by box in casing 1
Heat exchanger 100 is applied in the salt discharge operation of alumina producing Bayer process, thus, height can be steamed mother solution and be delivered to box type heat-exchanger
Device 100 is lowered the temperature, significantly reduces the dissolubility of the high sodium carbonate steamed in mother solution, thus improve the precipitation of sodium carbonate
Amount, and then significantly reduce the carbonate content in alumina producing Bayer process circulating mother liquor, reduce sodium carbonate to follow-up
The impact of production process and the damage causing equipment, reached energy-conservation, reduced the purpose of cost, and box-type heat exchanger 100
Simple in construction, it is simple to processing.
According to embodiments more of the present utility model, box-type heat exchanger 100 farther includes at least one dividing plate 3, dividing plate 3
It is located in casing 1.Specifically, dividing plate 3 can be one, it is also possible to for multiple.Specifically, dividing plate 3 separates internal for casing 1
Becoming the runner that two ends connect respectively with inlet 11 and overfall 12, runner includes the multiple subflow roads being sequentially communicated, Qi Zhongduo
It is provided with heat exchanger tube 2 at least one in individual sub-runner.It is to say, can the most any one height in multiple subflow roads
Heat exchanger tube 2 is set in runner, it is also possible to arrange heat exchanger tube 2 in each the subflow road in multiple subflow roads, it is also possible to many
In parton runner in individual sub-runner, heat exchanger tube 2 is set.Wherein, the quantity of the heat exchanger tube 2 in each subflow road can be
One, it is also possible to for multiple, this is not especially limited by this utility model.
For example, referring to Fig. 1 and Fig. 2, in each the subflow road in multiple subflow roads, it is equipped with a heat exchanger tube 2.Heat exchange
Pipe 2 can be horizontally disposed in subflow road, and multiple heat exchanger tubes 2 are spaced setting along the short transverse of casing 1.Wherein, each
Heat exchanger tube 2 in subflow road all can work alone.Thus, box-type heat exchanger 100 it is effectively improved within the unit interval
Treating capacity, improves the work efficiency of box-type heat exchanger 100.
It is, of course, understood that dividing plate 3 and the particular number of heat exchanger tube 2, can require that adjustment sets according to actual process
Meter, this is not especially limited by this utility model.
Specifically, one end of dividing plate 3 is connected with the inwall of casing 1, and the sidewall of the other end of dividing plate 3 and casing 1 is each other
Spaced apart.Thus, it is simple to cooling medium such as condensed water etc. flow in casing 1.
For example, referring to Fig. 1 and Fig. 2, dividing plate 3 can be multiple such as two etc., and multiple dividing plate 3 is staggered in casing 1
It is arranged to define out the runner of S-shaped.Such as, in the example of fig. 1, near dividing plate 3 right-hand member and the right side of casing 1 of casing 1 diapire
Sidewall is connected, the setting spaced apart with the left side wall of casing 1 of the left end of this dividing plate 3.Near casing 1 roof dividing plate 3 left end with
The left side wall of casing 1 is connected, the setting spaced apart with the right side wall of casing 1 of the right-hand member of this dividing plate 3.It is situated between thus, it is possible to extend condensation
Matter and the time of contact of heat exchanger tube 2, improve the heat transfer effect of box-type heat exchanger 100, such that it is able to be effectively reduced in heat exchanger tube 2
Material such as alumina producing Bayer process operation in the temperature of mother solution.
Alternatively, dividing plate 3 can be horizontally set in casing 1, but is not limited to this.Thus, it is possible to save the use of dividing plate 3
Material, reduces material cost.It is, of course, understood that dividing plate 3 can also be obliquely installed, as long as can limit between dividing plate 3
The runner of cooling medium, this is not especially limited by this utility model.
According to embodiments more of the present utility model, the cross section of dividing plate 3 can be formed as rectangle, two of dividing plate 3
Sidewall (such as, the left side wall in Fig. 2 and right side wall) extends respectively to the corresponding inwall with casing 1 and is connected.Thus, can be further
Ground extends the time of contact of the cooling medium in casing 1 and the material in heat exchanger tube 2, improves heat transfer effect, and so that case
The flowing of the cooling medium in body 1 is more in good order, thus significantly reduces energy consumption.
According to embodiments more of the present utility model, with reference to Fig. 3, the S-shaped curve extension of heat exchanger tube 2.Thus, it is possible to more enter
One step ground extends the time of contact of the material in heat exchanger tube 2 and the cooling medium in casing 1, thus further increasing box
The heat transfer effect of heat exchanger 100.
According to embodiments more of the present utility model, with reference to Fig. 1 and Fig. 3, two ends and the bending section of heat exchanger tube 2 are positioned at casing
Outside 1.Thus, it is possible to effectively reduce the volume of casing 1, save the materials of casing 1, thus significantly reduce cost.
One described according to the box-type heat exchanger 100 of this utility model embodiment below with reference to Fig. 1-Fig. 3 is embodied as
Example.
As shown in Figure 1-Figure 3, include that casing 1, three is S-shaped according to the box-type heat exchanger 100 of this utility model embodiment
Curve extension heat exchanger tube 2 and two dividing plates 3.
Casing 1 is formed as rectangular shape, and casing 1 is formed inlet 11 and overfall 12.Wherein, inlet 11 can
To be formed at the right lower quadrant of the left side wall of casing 1, the overfall 12 of casing 1 can be formed at the upper left quarter of the rear wall of casing 1.
Heat exchanger tube 2 is horizontally disposed in casing 1, and one end of heat exchanger tube 2 has charging aperture 21 and the other end has discharging opening 22, changes
The two ends of heat pipe 2 and bending section are positioned at outside casing 1.
Dividing plate 3 is flatly located in casing 1, dividing plate 3 by internal for casing 1 be separated into two ends respectively with inlet 11 and overflow
The runners of mouth 12 connection, runner includes three the sub-runners being sequentially communicated, is provided with a heat exchanger tube 2 in the most each subflow road.
Two dividing plates 3 are spaced along the short transverse of casing 1 and arrange, and two dividing plates 3 in casing 1 interlaced arrangement to limit S-shaped
Runner.Dividing plate 3 right-hand member near casing 1 diapire is connected with the right side wall of casing 1, the left end of this dividing plate 3 and the left side wall of casing 1
Spaced apart setting.The left end of dividing plate 3 near casing 1 roof is connected with the left side wall of casing 1, the right-hand member of this dividing plate 3 and casing 1
The spaced apart setting of right side wall.The cross section of dividing plate 3 is formed as rectangle, and two sidewalls of dividing plate 3 extend respectively to and casing 1
Corresponding inwall be connected.
Such as, during alumina producing Bayer process, the high mother solution that steams in subsider can be sent into box with pump
In heat exchanger 100, box-type heat exchanger 100 is internal uses recirculated cooling water to lower the temperature, and the high-temperature water after heat exchange can use mixed
Earth formula glass fibre reinforced plastics cooling tower is lowered the temperature, and the cooling water after cooling recycles, after cooling in being re-fed into box-type heat exchanger 100
The high mother solution that steams return subsider.Wherein, high steam mother solution to enter the temperature before box-type heat exchanger 100 be about 105 DEG C, by with
The heat exchange effect of recirculated water, it is possible to decrease to less than 95 DEG C (such as, 91 DEG C-93 DEG C), compared with traditional Temperature fall, pass through case
Mother solution temperature after formula heat exchanger 100 cooling is lower than the mother solution temperature after Temperature fall about 10 DEG C.Thus, significantly reduce
The high temperature steaming mother solution in alumina producing Bayer process, thus reduce the dissolubility of the sodium carbonate in mother solution, improve carbon
The amount of precipitation of acid sodium.
Box-type heat exchanger 100 according to this utility model embodiment, improves the heat transfer effect of box-type heat exchanger 100 and changes
The thermal efficiency, and simple in construction, it is simple to processing.
In the description of this specification, reference term " embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " concrete example " or " some examples " etc. means to combine this embodiment or the specific features of example description, knot
Structure, material or feature are contained at least one embodiment of the present utility model or example.In this manual, to above-mentioned art
The schematic representation of language is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or
Person's feature can combine in any one or more embodiments or example in an appropriate manner.
Embodiment the most of the present utility model, it will be understood by those skilled in the art that:
In the case of without departing from principle of the present utility model and objective, these embodiments can be carried out multiple change, revise, replace
And modification, scope of the present utility model is limited by claim and equivalent thereof.
Claims (9)
1. a box-type heat exchanger, it is characterised in that including:
Casing, described casing is formed inlet and overfall；
At least one heat exchanger tube, described heat exchanger tube is located in described casing, one end of described heat exchanger tube have charging aperture and another
End has discharging opening；With
At least one dividing plate, described dividing plate is located in described casing, and described box house is separated into two ends respectively by described dividing plate
The runner connected with described inlet and described overfall, described runner includes the multiple subflow roads being sequentially communicated, wherein said
It is provided with described heat exchanger tube at least one in multiple subflow roads.
Box-type heat exchanger the most according to claim 1, it is characterised in that one end of described dividing plate and the inwall of described casing
It is connected, and the sidewall of the other end of described dividing plate and described casing is spaced apart from each other.
Box-type heat exchanger the most according to claim 2, it is characterised in that described casing is formed as rectangular shape, described
Two sidewalls of dividing plate extend respectively to the corresponding inwall with described casing and are connected.
Box-type heat exchanger the most according to claim 3, it is characterised in that described inlet is formed at of described casing
The bottom of sidewall, described overfall is formed at the top of another sidewall of described casing.
Box-type heat exchanger the most according to claim 1, it is characterised in that described dividing plate is multiple, and the plurality of dividing plate
In described casing, interlaced arrangement is to limit the runner of S-shaped.
Box-type heat exchanger the most according to claim 1, it is characterised in that described dividing plate is horizontally disposed with.
7. according to the box-type heat exchanger according to any one of claim 1-6, it is characterised in that every in the plurality of subflow road
Described heat exchanger tube it is provided with in one.
Box-type heat exchanger the most according to claim 1, it is characterised in that the S-shaped curve extension of described heat exchanger tube.
Box-type heat exchanger the most according to claim 8, it is characterised in that the two ends of described heat exchanger tube and bending section are positioned at institute
State outside casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620533185.7U CN205873917U (en) | 2016-06-02 | 2016-06-02 | Box heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620533185.7U CN205873917U (en) | 2016-06-02 | 2016-06-02 | Box heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205873917U true CN205873917U (en) | 2017-01-11 |
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ID=57690208
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620533185.7U Active CN205873917U (en) | 2016-06-02 | 2016-06-02 | Box heat exchanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112897913A (en) * | 2021-03-25 | 2021-06-04 | 河南鼎隆新材料科技有限公司 | Multi-box type calcining device for treating industrial byproduct gypsum |
-
2016
- 2016-06-02 CN CN201620533185.7U patent/CN205873917U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112897913A (en) * | 2021-03-25 | 2021-06-04 | 河南鼎隆新材料科技有限公司 | Multi-box type calcining device for treating industrial byproduct gypsum |
| CN112897913B (en) * | 2021-03-25 | 2022-07-01 | 河南鼎隆新材料科技有限公司 | Multi-box type calcining device for treating industrial byproduct gypsum |
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