CN202080906U - Four-effect evaporator applied to sodium bichromate evaporation technology - Google Patents
Four-effect evaporator applied to sodium bichromate evaporation technology Download PDFInfo
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- CN202080906U CN202080906U CN2011201803555U CN201120180355U CN202080906U CN 202080906 U CN202080906 U CN 202080906U CN 2011201803555 U CN2011201803555 U CN 2011201803555U CN 201120180355 U CN201120180355 U CN 201120180355U CN 202080906 U CN202080906 U CN 202080906U
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- effect evaporator
- evaporator
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- well heater
- evaporation
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Abstract
The utility model discloses a four-effect evaporator applied to sodium bichromate evaporation technology. The four-effect evaporator applied to sodium bichromate evaporation technology comprises a three-effect evaporator, a two-effect evaporator, a one-effect evaporator and a four-effect evaporator through which acidification liquid of sodium bichromate passes sequentially. Except the one-effect evaporator receiving fresh steam, steam inlets at the upper parts of the rest evaporators are sequentially connected with the top steam outlet of a preceding evaporator. In virtue of structural improvement, the four-effect evaporator solves the problem that mirabilite crystallization is prone to form wall dirt and difficult in collection during production of sodium bichromate. The evaporation surface of evaporated liquor is enlarged by means of tangential feeding, and evaporation efficiency is improved. Further, the four-effect evaporator applied to sodium bichromate evaporation technology adopts a flash drum to treat steam condensation liquid, fully utilizes the heat energy remained in condensate water generated in evaporation process, and improves the utilization rate of steam.
Description
Technical field
The utility model relates to a kind of multiple-effect evaporator, especially a kind of quadruple effect evaporator that is applied to the sodium dichromate evaporation technology.
Background technology
At present, multiple-effect evaporation technology is sophisticated technology, characteristics are that the head effect is a thermal source with the live steam, secondary steam is used for next and imitates heating, the evaporation of sodium dichromate adopts 3～4 to imitate evaporation equipment usually, can produce a large amount of saltcake (sodium sulfate) in the evaporative process, forming the saltcake dirt can be deposited in the equipment, easily collecting does not cause damage and influences vaporization efficiency equipment, and wherein deposition mainly occurs in evaporated liquor from the process of heating tube inflow evaporator room, evaporated liquor is when flowing through heating tube, at the heating boiling in ducts, form " air chamber ", form fouling at tube wall easily; Patent 200920225489 discloses a kind of quadruple effect five body constituents falling-film evaporator, form by four separators, four well heaters and a flash tank, the opening for feed of this separator is designed to vertical feed opening, evaporated liquor vertically enters, evaporation area is little, vaporization efficiency is low, and each is imitated gas-liquid mixture that separator produces and pools together and squeeze into flash tank, fails to make full use of its residue heat energy; At present, the evaporation of single-action row literary composition is adopted in domestic sodium dichromate production more, and vaporization efficiency is low, the energy consumption height, and 1 ton of water of single-action levin evaporator evaporation will consume 1.25 tons of steam, and adopt quadruple effect evaporator, evaporate 1 ton of water and only need consume 0.4 ton of steam.
The utility model content
The technical problems to be solved in the utility model is: a kind of quadruple effect evaporator that is applied to the sodium dichromate evaporation technology is provided, and decapacitation improves steam utilization, can also prevent that saltcake from forming wall dirt and the convenient saltcake crystal of collecting in heating tube.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme: a kind of quadruple effect evaporator that is applied to the sodium dichromate evaporation technology, comprise sodium dichromate acidizing fluid triple-effect evaporator, 2nd effect evaporator, 1st effective evaporator, the quadruple effect evaporator of process successively, wherein, each single-effect evaporator is divided into separator and well heater, wherein, the steam inlet on 1st effective evaporator top connects live steam, and the steam inlet on all the other each single-effect evaporator tops connects the vapour outlet at a last effect evaporator room top successively by the secondary steam pipeline; Each imitates the separator inner and upper is evaporator room, and the below is the spinning liquid chamber, and the opening for feed place of evaporator room is connected with the tangential feeding pipe, and bottom, spinning liquid chamber is provided with the salt leg, and each single-effect evaporator adopts the forced circulation pump circulation; Each is imitated the well heater top and is provided with boiling-house, and boiling-house communicates by the evaporator room in the tangential feeding Guan Yutong 1st effective evaporator; Each condensation-water drain of imitating well heater is connected with flash tank, and described flash tank is provided with the gas equalizing line that communicates with same effect well heater.
Further, in order to make full use of the surplus heat of water of condensation, described one condensation-water drain of imitating well heater is connected with one and imitates an one-level flash tank and an effect two-stage flash jar, one imitates the one-level flash tank is provided with the gas equalizing line that communicates with an effect well heater, and a gaseous phase outlet of imitating the two-stage flash jar is connected with a secondary steam pipeline of imitating separator.
Further, in order to improve vaporization efficiency, described evaporator room is conical, and vapour outlet is arranged at the top, and vapour outlet is connected with the secondary steam pipeline.
Further, in order to prevent material bumping in well heater, described boiling-house is one section blank pipe that the discharge nozzle of well heater extends straight up.
Advantage of the present utility model is, the quadruple effect evaporator that other field uses normally will just directly be discharged after the live steam process condensation through heat exchange, and non-tangential feeding is adopted in charging, and the quadruple effect evaporator that provides in the utility model, wherein an effect well heater has connected two flash tanks, the water of condensation that carried out heat exchange is entered the secondary steam pipeline after by the flash tank gas-liquid separation again, make full use of its surplus heat; And the mode of tangential feeding makes formation concave meniscus in the evaporator room, and concave meniscus has increased the evaporation area of evaporated liquor, thereby has improved vaporization efficiency; Another advantage is, the production process of sodium dichromate can produce sodium chloride crystal, adopt common evaporation equipment easily to stop up, and then damage equipment, and special evaporation equipment at the sodium dichromate evaporation technology appears on the market, the utility model is provided with boiling-house on well heater, prevent that saltcake is at the well heater intercrystalline, bottom, spinning liquid chamber is provided with the salt leg, is used to collect the saltcake crystal, has solved " long-standing " of sodium dichromate evaporation.
Description of drawings
Below in conjunction with drawings and Examples technical solutions of the utility model are further specified;
Fig. 1 is a kind of structural representation that is applied to the quadruple effect evaporator embodiment of sodium dichromate evaporation technology of the utility model.
Embodiment
As shown in Figure 1, the utility model provides a kind of quadruple effect evaporator that is applied to the sodium dichromate evaporation technology, comprises that triple effect well heater (31), triple effect separator (32), triple effect discharging pump (33), the two effect well heaters (21), two for sodium dichromate acidizing fluid process are successively imitated separators (22), two effect discharging pumps (23), are imitated well heater (11), and imitated separator (12), an effect discharging pump (13), quadruple effect well heater (41), quadruple effect separator (42), quadruple effect discharging pump (43).
Wherein, one steam inlet of imitating well heater (11) top connects live steam, two steam inlets of imitating well heater (21) top connect the vapour outlet at effect separator (a 12) top, the steam inlet on triple effect well heater (31) top connects the vapour outlet at two effect separator (22) tops, and the steam inlet on quadruple effect well heater (41) top connects the vapour outlet at triple effect separator (32) top;
One vapour outlet of imitating well heater (11) is connected with one in turn and imitates an one-level flash tank (14) and an effect two-stage flash jar (15), one imitates one-level flash tank (14) is provided with an effect gas equalizing line that communicates with an effect well heater (11), can keep one to imitate the balance that one-level flash tank (14) internal gas pressure and is imitated well heater (11) internal gas pressure; One gaseous phase outlet of imitating two-stage flash jar (15) communicates with a secondary steam pipeline of imitating separator (12), the liquid phase outlet connects a phlegma storage tank, and described secondary steam pipeline is imitated the vapour outlet of separator and the pipeline between next effect well heater steam inlet for each;
Two vapour outlets of imitating well heater (21) are connected with two and imitate flash tank (24), two imitate flash tank (24) is provided with the two effect gas equalizing lines that communicate with two effect well heaters (21), can keep two to imitate the balance that flash tank (24) jar internal gas pressure and two is imitated well heater (21) internal gas pressure, the two liquid phase outlets of imitating flash tank (24) connect triple effect flash tank (34);
The vapour outlet of triple effect well heater (31) is connected with triple effect flash tank (34), triple effect flash tank (34) is provided with the triple effect gas equalizing line that communicates with triple effect well heater (31), the balance that can keep triple effect flash tank (34) jar internal gas pressure and triple effect well heater (21) internal gas pressure, the liquid phase outlet of triple effect flash tank (34) connects quadruple effect flash tank (44);
The vapour outlet of quadruple effect well heater (41) is connected with quadruple effect flash tank (44), quadruple effect flash tank (44) is provided with the quadruple effect gas equalizing line that communicates with quadruple effect well heater (41), the balance that can keep quadruple effect flash tank (44) jar internal gas pressure and quadruple effect well heater (41) internal gas pressure, the liquid phase outlet of quadruple effect flash tank (44) connects two phlegma storage tanks;
Wherein, each imitates the separator inner and upper is evaporator room (5), the below is spinning liquid chamber (6), described evaporator room (5) is conical, vapour outlet is arranged at the top, the opening for feed place of sidepiece is connected with tangential feeding pipe (7), and spinning liquid chamber (6) bottom is provided with salt leg (8), is provided with forced circulation pump (10) between the well heater of spinning liquid chamber (6) and same effect;
Each is imitated the well heater top and is provided with boiling-house (9), and described boiling-house (9) is the upwardly extending one section blank pipe of the discharge nozzle of well heater, and boiling-house (9) communicates by the interior evaporator room (5) of tangential feeding pipe (7) and same effect separator;
The material evaporation paths of present embodiment is: the acidizing fluid of sodium dichromate is added by the feed-pipe of fresh feed pump from triple effect well heater (31), form the ebullient evaporated liquor at triple effect well heater (31) internal heating, evaporated liquor enters boiling-house (9) by the discharge nozzle of triple effect well heater (31), in boiling-house (9), stop boiling back and enter evaporator room (5) in the triple effect separator (32) by tangential feeding pipe (7), the secondary steam oil that evaporated liquor produces enters into next effect well heater by the vapour outlet at evaporator room (5) top, the saltcake crystal that evaporated liquor is separated out in spinning liquid chamber (6) is collected by salt leg (8), evaporated liquor enters back, spinning liquid chamber (6) and enters triple effect well heater (31) once more by forced circulation pump (10), repeat the step of front, the evaporated liquor pump circulation enters two effects successively by triple effect discharging pump (33) after reaching target content, one imitates and quadruple effect, in each is imitated, repeat same evaporation step, export qualified mother liquor by quadruple effect discharging pump (43) at last.
For a person skilled in the art; under the prerequisite that does not break away from the utility model structure; can also make some distortion and improvement, should be considered as protection domain of the present utility model as these yet, these can not influence effect and practical applicability that the utility model is implemented.
Claims (4)
1. quadruple effect evaporator that is applied to the sodium dichromate evaporation technology, it is characterized in that: comprise sodium dichromate acidizing fluid triple-effect evaporator, 2nd effect evaporator, 1st effective evaporator, the quadruple effect evaporator of process successively, wherein, each single-effect evaporator is divided into separator and well heater, wherein, the steam inlet on 1st effective evaporator top connects live steam, and the steam inlet on all the other each single-effect evaporator tops connects the vapour outlet at a last effect evaporator room top successively by the secondary steam pipeline; Each imitates the separator inner and upper is evaporator room, and the below is the spinning liquid chamber, and the opening for feed place of evaporator room is connected with the tangential feeding pipe, and bottom, spinning liquid chamber is provided with the salt leg, and each single-effect evaporator adopts the forced circulation pump circulation; Each is imitated the well heater top and is provided with boiling-house, and boiling-house communicates by the evaporator room in the tangential feeding Guan Yutong 1st effective evaporator; Each condensation-water drain of imitating well heater is connected with flash tank, and described flash tank is provided with the gas equalizing line that communicates with same effect well heater.
2. the quadruple effect evaporator that is applied to the sodium dichromate evaporation technology according to claim 1, it is characterized in that: described one condensation-water drain of imitating well heater is connected with one and imitates an one-level flash tank and an effect two-stage flash jar, one imitates the one-level flash tank is provided with the gas equalizing line that communicates with an effect well heater, and a gaseous phase outlet of imitating the two-stage flash jar is connected with a secondary steam pipeline of imitating evaporator room.
3. the quadruple effect evaporator that is applied to the sodium dichromate evaporation technology according to claim 1 is characterized in that: described evaporator room is for conical, and vapour outlet is arranged at the top, and vapour outlet is connected with the secondary steam pipeline.
4. the quadruple effect evaporator that is applied to the sodium dichromate evaporation technology according to claim 1 is characterized in that: described boiling-house is one section blank pipe that the discharge nozzle of well heater extends straight up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201803555U CN202080906U (en) | 2011-05-31 | 2011-05-31 | Four-effect evaporator applied to sodium bichromate evaporation technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201803555U CN202080906U (en) | 2011-05-31 | 2011-05-31 | Four-effect evaporator applied to sodium bichromate evaporation technology |
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| CN202080906U true CN202080906U (en) | 2011-12-21 |
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| CN2011201803555U Expired - Lifetime CN202080906U (en) | 2011-05-31 | 2011-05-31 | Four-effect evaporator applied to sodium bichromate evaporation technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102657947A (en) * | 2012-05-18 | 2012-09-12 | 重庆紫光天化蛋氨酸有限责任公司 | Four-effect cross-flow evaporation system and process |
| CN105084626A (en) * | 2014-05-04 | 2015-11-25 | 内蒙古大唐国际克什克腾煤制天然气有限责任公司 | Vaporizing processing system with zero discharge of waste water |
| CN106395949A (en) * | 2016-11-30 | 2017-02-15 | 江苏迈安德节能蒸发设备有限公司 | Treatment system of sodium sulfate wastewater |
-
2011
- 2011-05-31 CN CN2011201803555U patent/CN202080906U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102657947A (en) * | 2012-05-18 | 2012-09-12 | 重庆紫光天化蛋氨酸有限责任公司 | Four-effect cross-flow evaporation system and process |
| CN105084626A (en) * | 2014-05-04 | 2015-11-25 | 内蒙古大唐国际克什克腾煤制天然气有限责任公司 | Vaporizing processing system with zero discharge of waste water |
| CN106395949A (en) * | 2016-11-30 | 2017-02-15 | 江苏迈安德节能蒸发设备有限公司 | Treatment system of sodium sulfate wastewater |
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Granted publication date: 20111221 |