CN102430250A - Evaporation and concentration method for corrosive liquid material - Google Patents
Evaporation and concentration method for corrosive liquid material Download PDFInfo
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- CN102430250A CN102430250A CN2010105051213A CN201010505121A CN102430250A CN 102430250 A CN102430250 A CN 102430250A CN 2010105051213 A CN2010105051213 A CN 2010105051213A CN 201010505121 A CN201010505121 A CN 201010505121A CN 102430250 A CN102430250 A CN 102430250A
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- chlorate
- corrosive
- transferring medium
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses an evaporation and concentration method for a corrosive liquid material, which relates to an industrial concentration and production process. After exchanging heat with a high-temperature heat transferring medium, the corrosive liquid material is evaporated to remove high-temperature steam, and then the concentrated liquid material is obtained; and after exchanging heat with a low-temperature heat transferring medium, the high-temperature steam forms condensed water which is then drained through a water pump. The corrosive liquid material can be evaporated under a working condition withof lower temperature by the method, so on the one hand, the condensation temperature of the steam of a freezing medium can be reduced and a coefficient of heating performance is improved, and on the other hand, the corrosive material is not decomposed. When the method is compared with the prior art, energy resource can be greatly saved, and chlorate corrosive materials, such as sodium hypochlorite, potassium perchlorate, sodium chlorate, potassium chlorate, magnesium chlorate and the like can be concentrated by the method.
Description
Technical field:
The present invention relates to a kind of industry and concentrate production technology, particularly a kind of evaporating and concentrating process technical field that is applicable to corrosive liquids materials such as chlorate.
Background technology:
Chlorate is the corrosive liquids material like clorox, potassium hyperchlorate etc., is one of industrial chemicals of using always, and clorox is widely used in the sterilization that comprises running water, Zhong Shui, industrial circulating water, swimming-pool water, hospital sewage or the like various water bodys.Clorox can also destroy cyanide ion and phenyl ring etc.; Advanced oxidation as Treatment of Cyanide-containing Wastewater and some industrial serious pollution waste water; Can also be used for bleachings such as paper pulp, what the clorox liquid of high concentration can also be used for adhering on peel-off device and the pipeline is stained with mud.
Clorox belongs to strong base-weak acid salt, and it is as clear as crystal, is a kind of liquid that can be dissolved in water fully.But because sodium hypochlorite solution is heated and be prone to decomposes, have strong oxidizing property, be difficult for stored for a long timely, clorox is many with electrolysis low concentration saline solution in situ preparation.
In fact prepare clorox through electrolysis low concentration saline solution and will consume a large amount of electric energy; And in the waste liquid after the sterilization; Often also have a spot of clorox,, for enterprise, will reduce cost if can reclaim this a part of clorox; And can reduce pressure, so the inevitable choice of the recycling manufacturing enterprise of clorox to environment.
Reclaim the waste liquid that these contain clorox, the angle from making full use of the natural resources no matter is still from point of view of environment protection; All be noticeable problem, and liquor natrii hypochloritis's characteristics are to have strong oxidizing property, determined it concentrate with other solution concentration process be different; In addition; The liquor natrii hypochloritis is unstable, meets heat and is prone to decompose, and therefore can only under low-temp low-pressure, evaporate.
Concentrate in the treatment process commonly used at waste liquid; Evaporation technique is a kind of technology commonly used; Traditional evaporation process just is to use living Steam Heating weak solution, produces condensed water after the steam heat release condensation and discharges, and the higher indirect steam of the temperature that produces after the water evaporates in the weak solution is directly got rid of; A kind of dilute sulfuric acid evaporation and concentration scheme like the design of the grand technological development in Guangzhou Co., Ltd; The multiple-effect evaporation form that it adopts, first imitates the living steam that has used 0.6MPa, and in the end an effect has adopted the higher steam of water quench temperature.Will cause the consequence of two aspects like this: 1) the indirect steam temperature is higher, and directly discharging can increase operating cost, wastes energy; 2) will carry a spot of drop secretly in the indirect steam, will cause the loss of solute like this, also will pollute the environment.
Summary of the invention:
The object of the invention provides the evaporating concentrating method of a kind of energy-conservation, low consumption, free of contamination corrosive liquids material.
Technical scheme of the present invention is: evaporative removal high-temperature vapor after the heat transferring medium heat exchange of corrosive liquids material and high temperature, the liquid material that obtains concentrating; The heat transferring medium of said high-temperature vapor and low temperature carries out forming condensed water after the heat exchange, discharges through water pump.
The present invention does not use living steam, does not let the direct condensation of indirect steam discharge yet; The corrosive liquids material is evaporated under the operating mode of lower temperature, can reduce the condensation temperature of refrigerant vapour so on the one hand, improve the heating performance coefficient, the corrosivity material is decomposed.Compared with prior art, energy savings greatly can be used for concentrating and comprises clorox, potassium hyperchlorate, sodium chlorate, potassium chlorate, chlorate corrosivity materials such as magron.
Description of drawings
Fig. 1 is a fundamental diagram of the present invention.
The specific embodiment:
The present invention mainly is made up of falling film evaporator 4, compressor 2, secondary steam condenser 1, water pump 5.The feed tube 6 of corrosive liquids material is connected an entrance point 7 of falling film evaporator 4; With connect the high-temperature vapor port of export 8 on the falling film evaporator 4 that this entrance point 7 is connected; Falling film evaporator 4 also is provided with the concentrated liquid material port of export 9, and falling film evaporator 4 also is provided with the heat transferring medium entrance point 10 and the port of export 11.Secondary steam condenser 1 is provided with the heat transferring medium entrance point 12 and the port of export 13, and the heat transferring medium port of export 11 of falling film evaporator 4 is connected with the heat transferring medium entrance point 12 of secondary steam condenser 1 through choke valve 3.The heat transferring medium port of export 13 of secondary steam condenser 1 is connected with the heat transferring medium entrance point 4 of falling film evaporator 4 through compressor 2.Secondary steam condenser 1 also is provided with steam entrance point 14 and condensation-water drain end 15; The high-temperature vapor port of export 8 of falling film evaporator 4 is connected with the steam entrance point 14 of secondary steam condenser 1 through pipeline 16, and the condensation-water drain end 15 of secondary steam condenser 1 connects drainpipe 17 through water pump 5.
Operation principle: the heat transferring medium steam of the low-temp low-pressure out-tubular condensing at falling film evaporator 4 that from indirect steam condenser 1, comes out through compressor 2 compression back, pass through choke valve 3 throttlings after the condensation, return in the indirect steam condenser 1.
The corrosive liquids material carries out heat exchange with the heat transferring medium of high temperature in falling film evaporator 4 pipe after, the indirect steam that comes out discharge evaporative removal high-temperature vapor after the heat release condensation in indirect steam condenser 1, the liquid material that obtains concentrating.
Claims (1)
1. the evaporating concentrating method of a corrosive liquids material is characterized in that evaporative removal high-temperature vapor after the heat transferring medium heat exchange of corrosive liquids material and high temperature, the liquid material that obtains concentrating; The heat transferring medium of said high-temperature vapor and low temperature carries out forming condensed water after the heat exchange, discharges through water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105051213A CN102430250A (en) | 2010-09-29 | 2010-09-29 | Evaporation and concentration method for corrosive liquid material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105051213A CN102430250A (en) | 2010-09-29 | 2010-09-29 | Evaporation and concentration method for corrosive liquid material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102430250A true CN102430250A (en) | 2012-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105051213A Pending CN102430250A (en) | 2010-09-29 | 2010-09-29 | Evaporation and concentration method for corrosive liquid material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102430250A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045038A (en) * | 1989-02-22 | 1990-09-05 | 大连理工大学 | Film-type multi-effect evaporation system |
| CN101289384A (en) * | 2008-04-28 | 2008-10-22 | 河南金丹乳酸有限公司 | Use method of multiple-effect falling film concentrating device in production of lactic acid |
| CN101837963A (en) * | 2009-12-01 | 2010-09-22 | 瓮福（集团）有限责任公司 | Stepped utilization method of steam in ammonium phosphate production |
-
2010
- 2010-09-29 CN CN2010105051213A patent/CN102430250A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045038A (en) * | 1989-02-22 | 1990-09-05 | 大连理工大学 | Film-type multi-effect evaporation system |
| CN101289384A (en) * | 2008-04-28 | 2008-10-22 | 河南金丹乳酸有限公司 | Use method of multiple-effect falling film concentrating device in production of lactic acid |
| CN101837963A (en) * | 2009-12-01 | 2010-09-22 | 瓮福（集团）有限责任公司 | Stepped utilization method of steam in ammonium phosphate production |
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Application publication date: 20120502 |