CN204824233U - Evaporated crystallizer - Google Patents
Evaporated crystallizer Download PDFInfo
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- CN204824233U CN204824233U CN201520440224.4U CN201520440224U CN204824233U CN 204824233 U CN204824233 U CN 204824233U CN 201520440224 U CN201520440224 U CN 201520440224U CN 204824233 U CN204824233 U CN 204824233U
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- transfer tube
- heat transfer
- gas
- evaporation
- pipe core
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Abstract
The utility model discloses an evaporated crystallizer belongs to the petrochemical trade and contains salt sewage treatment technical field. This evaporated crystallizer includes: evaporation heat exchanger (12), gas -liquid separation part (11) and material discharge part (13), gas -liquid separation part (11) with evaporation heat exchanger's (12) top intercommunication, the material discharge part (13) with evaporation heat exchanger's (12) bottom intercommunication, wherein, evaporation heat exchanger (12) includes: shell (10), center tube (2), heat exchange tube (3), steam inlet (7) and condensate water export (8), center tube (2) are used for carrying the salt solution, heat exchange tube (3) are used for the solvent of evaporite solution, make salt crystallization, the internal diameter of center tube (2) is greater than the internal diameter of heat exchange tube (3). This evaporated crystallizer utilizes the principle of thermal siphon to evaporate the crystallization to the salt solution, does not want power equipment, and the energy consumption is low, and area is little.
Description
Technical field
The utility model relates to petroleum chemical industry saline sewage processing technology field, particularly a kind of evaporative crystallizer.
Background technology
Petroleum chemical industry can produce the higher sewage of saltiness in process of production, generally adopts the method for evaporative crystallization to purify it for the sewage that this kind of saltiness is higher.
Evaporation crystallization equipment is mainly divided into evaporative crystallization of calming the anger (MVR) equipment and multiple-effect evaporation crystallization (MED) equipment.Wherein, evaporation crystallization equipment of calming the anger mainly comprises the parts such as compressor, interchanger, recycle pump, vaporizer, gas-liquid separator.In evaporation and crystal process, first sewage enter interchanger, then enter vaporizer through recycle pump to evaporate, gas-liquid mixture after evaporation enters gas-liquid separator, be separated the secondary steam obtained and after compressor, enter vaporizer as thermal source for evaporation, the liquid that separation obtains is sent vaporizer back to and is proceeded evaporation after recycle pump.
Realizing in process of the present utility model, designer finds that prior art at least exists following problem: existing evaporation crystallization equipment floor space is large, energy consumption is higher.
Utility model content
For solving the problems of the technologies described above, the utility model provide a kind of floor space little, do not need the evaporative crystallizer that power-equipment, energy consumption are low.
Specifically, following technical scheme is comprised:
A kind of evaporative crystallizer, described evaporative crystallizer comprises:
Evaporation and heat-exchange parts, for the solvent of evaporation salt solution, make salt-pepper noise separate out;
Gas-liquid separate component, for evaporating gas in the steam that obtains and liquid separation by evaporation and heat-exchange parts;
And
Discharge of materials parts, for exporting the salts solution after evaporation and gained crystal from described evaporative crystallizer;
Described gas-liquid separate component is communicated with the top of described evaporation and heat-exchange parts; Described discharge of materials parts are communicated with the bottom of described evaporation and heat-exchange parts;
Wherein,
Described evaporation and heat-exchange parts comprise: shell, pipe core, heat transfer tube, steam-in and condensed water outlet;
Described pipe core is for carrying salts solution;
Described heat transfer tube is used for the solvent of evaporation salt solution, and salt-pepper noise is separated out;
Described pipe core and heat transfer tube are positioned at described enclosure, described pipe core is parallel with described heat transfer tube, the two ends of described pipe core and described heat transfer tube respectively with described gas-liquid separate component and described discharge of materials members, the internal diameter of described pipe core is greater than the internal diameter of described heat transfer tube;
Described steam-in is positioned at described shell upper, and described condensed water outlet is positioned at described outer casing underpart.
Further, the quantity of described pipe core is 1, and the quantity of described heat transfer tube is at least 2.
Preferably, the quantity of described heat transfer tube is 50 ~ 300.
Preferably, the pass of the internal diameter of described pipe core and the internal diameter of described heat transfer tube is: n
0 . 5d
2≤ d
1≤ 2n
0 . 5d
2, wherein, d
1for the internal diameter of described pipe core, d
2for the internal diameter of described heat transfer tube, n is the quantity of described heat transfer tube.
Further, described gas-liquid separate component comprises gas-liquid separator, salts solution entrance and vapour outlet, and described vapour outlet is positioned at above described gas-liquid separator, and described salts solution entrance is positioned at below described gas-liquid separator.
Preferably, the height of described gas-liquid separator is 150 ~ 300mm.
Further, described discharge of materials parts comprise hopper and material outlet.
Preferably, the shape of described hopper is taper.
The beneficial effect of the technical scheme that the utility model embodiment provides is:
The utility model embodiment provides a kind of novel evaporative crystallizer integrating heat exchange, evaporation and crystallization.When salts solution enters pipe core and flows out from pipe core bottom, can be inhaled in heat transfer tube due to the principle of thermal siphon, in heat transfer tube, evaporate crystallize out after a part of solvent.Evaporate the gas-liquid mixture obtained in heat transfer tube to enter gas-liquid separate component and carry out gas-liquid separation, do not entered discharge of materials parts by the liquid, the crystal of precipitation and the salts solution that flows out from pipe core and be not inhaled into heat transfer tube that evaporate.This evaporative crystallizer does not need power-equipment, such as compressor, recycle pump etc., and can realize the heat exchange to salts solution, evaporation and crystallisation process, energy consumption is lower, save energy, reduces costs.And this evaporated crystallization device also overcomes the problem that traditional evaporation crystallization equipment interchanger and vaporizer be provided separately, and reduces the floor space of evaporative crystallizer, saves space.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the evaporative crystallizer that Fig. 1 provides for the utility model embodiment;
The principle of work schematic diagram of the evaporative crystallizer that Fig. 2 provides for the utility model embodiment.
Reference numeral in figure represents respectively:
1, gas-liquid separator; 2, pipe core; 3, heat transfer tube; 4, hopper; 5, material outlet; 6, vapour outlet; 7, steam-in; 8, condensed water outlet; 9, salts solution entrance; 10, shell; 11, gas-liquid separate component; 12, evaporation and heat-exchange parts; 13, discharge of materials parts.
A1, salts solution; A2, be not inhaled into the salts solution of heat transfer tube; B1, gas-liquid mixture; B2, not by the crystal of the liquid that evaporates and precipitation; Steam after b3, gas-liquid separation; Liquid after b4, gas-liquid separation; C1, heat source stream; C2, heat source stream cool the condensed water obtained.
The direction of arrow in figure represents the flow direction of gas or liquid.
Embodiment
For making the technical solution of the utility model and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
The utility model embodiment provides a kind of evaporative crystallizer, and the structure of this evaporative crystallizer as shown in Figure 1.This evaporative crystallizer comprises:
Evaporation and heat-exchange parts 12, for the solvent of evaporation salt solution, make salt-pepper noise separate out;
Gas-liquid separate component 11, for evaporating gas in the steam that obtains and liquid separation by evaporation and heat-exchange parts 12; And
Discharge of materials parts 13, for exporting the salts solution after evaporation and gained crystal from described evaporative crystallizer;
Described gas-liquid separate component 11 is communicated with the top of described evaporation and heat-exchange parts 12; Described discharge of materials parts 13 are communicated with the bottom of described evaporation and heat-exchange parts 12;
Wherein,
Described evaporation and heat-exchange parts 12 comprise: shell 10, pipe core 2, heat transfer tube 3, steam-in 7 and condensed water outlet 8;
Described pipe core 2 is for carrying salts solution;
Described heat transfer tube 3, for the solvent of evaporation salt solution, makes salt-pepper noise separate out;
It is inner that described pipe core 2 and heat transfer tube 3 are positioned at described shell 10, described pipe core 2 is parallel with described heat transfer tube 3, the two ends of described pipe core 2 and described heat transfer tube 3 are communicated with described discharge of materials parts 13 with described gas-liquid separate component 11 respectively, and the internal diameter of described pipe core 2 is greater than the internal diameter of described heat transfer tube 3;
Described steam-in 7 is positioned at described shell 10 top, and described condensed water outlet 8 is positioned at described shell 10 bottom.
See Fig. 2, the principle of work of the evaporative crystallizer that the utility model embodiment provides is: the initial stage run at evaporative crystallizer, salts solution a1 (saline sewage of such as petrochemical enterprise) enters pipe core 2 and heat transfer tube 3 respectively from the top of pipe core 2 and heat transfer tube 3, heat source stream c1 to enter from steam-in 7 in the shell 10 of evaporation and heat-exchange parts 12 and the salts solution a1 transferred heat in pipe core 2 and heat transfer tube 3, after salts solution a1 in pipe core 2 and interchanger 3 is heated, evaporation produces gas, but because the internal diameter of pipe core 2 is larger, the amount of the steam produced after being heated is less, and heat transfer tube 3 internal diameter is less, the quantity of steam produced after being heated is larger, because gas density is less than fluid density, therefore, produce density difference in pipe core 2 and heat transfer tube 3, according to the principle of " thermal siphon ", the salts solution a1 in pipe core 2, when flowing out bottom pipe core 2, can be inhaled in heat transfer tube 3 due to density difference.Can evaporate after the solvent entering the salts solution a1 of heat transfer tube 3 is heated, evaporate after the steam obtained is exported by heat transfer tube 3 top and enter gas-liquid separate component 11, in gas-liquid separate component 11, have some vapor condensation to form gas-liquid mixture b1, this gas-liquid mixture b1 carries out gas-liquid separation in gas-liquid separate component 11.When evaporative crystallizer runs after for some time reaches steady state, the steam produced due to solvent evaporation constantly exports from heat transfer tube 3, and salts solution a1 can not enter in heat transfer tube 3 again.Now, salts solution a1 flows from top to bottom in pipe core 2, when flowing out bottom pipe core 2, part salts solution a1 is inhaled into heat transfer tube 3 due to the principle of " thermal siphon ", through the thermal exchange with heat source stream c1 in heat transfer tube 3, part solvent is evaporated, evaporate the steam obtained and enter gas-liquid separate component 11 by heat transfer tube 3 top, in gas-liquid separate component 11, have some vapor condensation to form gas-liquid mixture b1, this gas-liquid mixture b1 carries out gas-liquid separation in gas-liquid separate component 11.Liquid b4 after gas-liquid separation is back in pipe core 2.Circular flow like this, when the salts solution being inhaled into heat transfer tube 3 reaches capacity, salt wherein will crystallization.Flow out bottom pipe core 2 and not to be inhaled in the salts solution a2 of heat transfer tube 3 and heat transfer tube 3 and not entered discharge of materials parts 13 by the crystal of the liquid that evaporates and precipitation.Heat source stream c1 through with the salts solution a1 thermal exchange in heat transfer tube 3 after, be condensed into liquid, the condensed water c2 of formation exports 8 by the condensed water of evaporation and heat-exchange parts 12 and discharges.
To sum up, the evaporative crystallizer that the utility model embodiment provides integrates heat exchange, evaporation and crystallization, under the prerequisite not needing the power-equipment such as recycle pump, compressor, " thermal siphon " principle is utilized to realize heat exchange to salts solution, evaporation and crystallisation process, effective reduction energy consumption, save energy, reduces costs, and also overcomes the problem that traditional evaporation crystallization equipment interchanger and vaporizer are provided separately simultaneously, reduce the floor space of evaporative crystallizer, save space.
In above-mentioned evaporative crystallizer, the quantity of described pipe core 2 includes but not limited to 1, preferably 1; The quantity of described heat transfer tube 3 is at least 2, preferably 50 ~ 300.
In above-mentioned evaporative crystallizer, the relation of the internal diameter of described pipe core 2 and the internal diameter of described heat transfer tube 3 is preferred: n
0.5d
2≤ d
1≤ 2n
0.5d
2, wherein, d
1for the internal diameter of described pipe core 2, d
2for the internal diameter of described heat transfer tube 3, n is the quantity of described heat transfer tube 3.If the internal diameter of heat transfer tube 3 is comparatively large, namely less with the difference in internal diameters distance of pipe core 2, then the solvent of the salts solution entered in heat transfer tube 3 can be caused by a large amount of evaporations, not make " thermal siphon " phenomenon not obvious.If the internal diameter of heat transfer tube 3 is too small, then the salts solution a1 heat transfer tube 3 more difficult to get access flowed out bottom pipe core 2, affects evaporative crystallizer of the present utility model and normally runs.
In above-mentioned evaporative crystallizer, described gas-liquid separate component 11 comprises gas-liquid separator 1, salts solution entrance 9 and vapour outlet 6, and described vapour outlet 6 is positioned at above described gas-liquid separator 1, and described salts solution entrance 9 is positioned at below described gas-liquid separator 1.Salts solution entrance 9 can be communicated with salts solution line of pipes, carries the salts solution needing to carry out evaporative crystallization.Salts solution, after salts solution entrance 9 enters gas-liquid separate component 11, enters the pipe core 2 be communicated with gas-liquid separate component 11, and then enters in heat transfer tube 3 again and evaporate.Gas-liquid mixture b1 gained steam b3 after gas-liquid separation is exported by vapour outlet 6.In order to save energy, can to the steam b3 recycle after gas-liquid separation.For evaporative crystallization of calming the anger (MVR) equipment, the steam b3 after gas-liquid separation can be transported to by steam-in 7 salts solution that evaporation and heat-exchange parts 12 exchange in heat pipe 3 again and heat, and then solvent is evaporated.For multiple-effect evaporation crystallizer (MED), the evaporative crystallizer of multiple the utility model embodiment can be cascaded, the steam b3 after gas-liquid separation be transported in the evaporation and heat-exchange parts 12 of next effect evaporative crystallizer or a upper effect evaporative crystallizer.
In above-mentioned evaporative crystallizer, the height preferably 150 ~ 300mm of described gas-liquid separator 1.The height of gas-liquid separator 1 is too low, then gas-liquid separation can be made insufficient; And the excessive height of gas-liquid separator 1, then can increase the volume of evaporative crystallizer entirety.
In above-mentioned evaporative crystallizer, described discharge of materials parts 13 comprise hopper 4 and material outlet 5.The salts solution flowed out from the pipe core 2 of evaporation and heat-exchange parts 12 and heat transfer tube 3, after hopper collects, is exported by material outlet 5.In order to improve the effect of evaporative crystallization, obtaining more crystal, for evaporative crystallization of calming the anger (MVR) equipment, the salts solution exported can be inputted by salts solution entrance 9 again, carry out circulating solvent evaporation by material outlet 5; Or for multiple-effect evaporation crystallizer (MED), the salts solution that material outlet 5 exports is transported in next effect evaporative crystallizer.
In above-mentioned evaporative crystallizer, the shape of described hopper 4 does not have strict requirement, but from the viewpoint of the effect of mass transport, the shape of hopper 4 is preferably taper.
The above is only understand the technical solution of the utility model for the ease of those skilled in the art, not in order to limit the utility model.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. an evaporative crystallizer, is characterized in that, described evaporative crystallizer comprises:
Evaporation and heat-exchange parts (12), for the solvent of evaporation salt solution, make salt-pepper noise separate out;
Gas-liquid separate component (11), for evaporating gas in the steam that obtains and liquid separation by evaporation and heat-exchange parts (12); And
Discharge of materials parts (13), for exporting the salts solution after evaporation and gained crystal from described evaporative crystallizer;
Described gas-liquid separate component (11) is communicated with the top of described evaporation and heat-exchange parts (12); Described discharge of materials parts (13) are communicated with the bottom of described evaporation and heat-exchange parts (12);
Wherein,
Described evaporation and heat-exchange parts (12) comprising: shell (10), pipe core (2), heat transfer tube (3), steam-in (7) and condensed water outlet (8);
Described pipe core (2) is for carrying salts solution;
Described heat transfer tube (3), for the solvent of evaporation salt solution, makes salt-pepper noise separate out;
It is inner that described pipe core (2) and heat transfer tube (3) are positioned at described shell (10), described pipe core (2) is parallel with described heat transfer tube (3), the two ends of described pipe core (2) and described heat transfer tube (3) are communicated with described discharge of materials parts (13) with described gas-liquid separate component (11) respectively, and the internal diameter of described pipe core (2) is greater than the internal diameter of described heat transfer tube (3);
Described steam-in (7) is positioned at described shell (10) top, and described condensed water outlet (8) is positioned at described shell (10) bottom.
2. evaporative crystallizer according to claim 1, is characterized in that, the quantity of described pipe core (2) is 1, and the quantity of described heat transfer tube (3) is at least 2.
3. evaporative crystallizer according to claim 2, is characterized in that, the quantity of described heat transfer tube (3) is 50 ~ 300.
4. evaporative crystallizer according to claim 1, is characterized in that, the pass of the internal diameter of described pipe core (2) and the internal diameter of described heat transfer tube (3) is: n
0.5d
2≤ d
1≤ 2n
0.5d
2, wherein, d
1for the internal diameter of described pipe core (2), d
2for the internal diameter of described heat transfer tube (3), n is the quantity of described heat transfer tube (3).
5. evaporative crystallizer according to claim 1, it is characterized in that, described gas-liquid separate component (11) comprises gas-liquid separator (1), salts solution entrance (9) and vapour outlet (6), described vapour outlet (6) is positioned at described gas-liquid separator (1) top, and described salts solution entrance (9) is positioned at described gas-liquid separator (1) below.
6. evaporative crystallizer according to claim 5, is characterized in that, the height of described gas-liquid separator (1) is 150 ~ 300mm.
7. evaporative crystallizer according to claim 1, is characterized in that, described discharge of materials parts (13) comprise hopper (4) and material outlet (5).
8. evaporative crystallizer according to claim 7, is characterized in that, the shape of described hopper (4) is taper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520440224.4U CN204824233U (en) | 2015-06-24 | 2015-06-24 | Evaporated crystallizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520440224.4U CN204824233U (en) | 2015-06-24 | 2015-06-24 | Evaporated crystallizer |
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| Publication Number | Publication Date |
|---|---|
| CN204824233U true CN204824233U (en) | 2015-12-02 |
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ID=54681855
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| CN201520440224.4U Active CN204824233U (en) | 2015-06-24 | 2015-06-24 | Evaporated crystallizer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224922A (en) * | 2016-08-21 | 2016-12-14 | 侴乔力 | Siphon circulation adverse current heating waste heat steam boiler in pipe |
| CN106764990A (en) * | 2016-11-27 | 2017-05-31 | 侴乔力 | Step backheating type condensing source heat pump drives steam boiler |
-
2015
- 2015-06-24 CN CN201520440224.4U patent/CN204824233U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224922A (en) * | 2016-08-21 | 2016-12-14 | 侴乔力 | Siphon circulation adverse current heating waste heat steam boiler in pipe |
| CN106764990A (en) * | 2016-11-27 | 2017-05-31 | 侴乔力 | Step backheating type condensing source heat pump drives steam boiler |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |