CN109650475A - A kind of sodium hypophosphite evaporation technology - Google Patents
A kind of sodium hypophosphite evaporation technology Download PDFInfo
- Publication number
- CN109650475A CN109650475A CN201811614261.7A CN201811614261A CN109650475A CN 109650475 A CN109650475 A CN 109650475A CN 201811614261 A CN201811614261 A CN 201811614261A CN 109650475 A CN109650475 A CN 109650475A
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- China
- Prior art keywords
- effect
- evaporator
- sodium hypophosphite
- triple
- gas
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/165—Hypophosphorous acid; Salts thereof
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a kind of sodium hypophosphite evaporation technologies, sodium hypophosphite aqueous solution is evaporated using triple-effect evaporation plant, specific process step includes: that sodium hypophosphite is squeezed into 1st effective evaporator with flow appropriate, it evaporates the secondary steam generated and enters 2nd effect evaporator after the effect gas-liquid separator separates in 1st effective evaporator, the secondary steam generated in 2nd effect evaporator enters triple effect evaporator after two effect gas-liquid separator separates, enters condenser condensation discharge through triple effect gas-liquid separator separates steam after triple effect evaporator evaporation；The effect discharging pump that the concentrate of one effect gas-liquid separator passes through positioned at bottom is beaten into triple effect evaporator, the concentrate of triple effect gas-liquid separator in triple effect evaporator is beaten through the triple effect discharging pump of bottom to 2nd effect evaporator, and the concentrate in two effect gas-liquid separators is beaten through two effect discharging pumps to crystallization kettle after reaching normal concentration.The present invention can be realized the continuous evaporation of sodium hypophosphite, and easy to operate, discharge concentration is stablized.
Description
Technical field
The present invention relates to chemical production technical fields, more particularly to a kind of sodium hypophosphite evaporation technology.
Background technique
In the production process that hypophosphorous acid is received, needs the hypophosphorous acid by 25% mass concentration to receive aqueous solution and be evaporated to 85% mass
Then concentration carries out crystallisation by cooling.All the time liquid hypophosphorous acid receive aqueous solution concentration and evaporation be using single effect evaporation technique, it is single
It is high to imitate evaporation technology energy consumption, steam consumption is big, and is intermittent operation, is unfavorable for the realization of automation control, is produced into
This is higher.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of sodium hypophosphite evaporation technologies, can be realized sodium hypophosphite
Continuous evaporation, easy to operate, discharge concentration are stablized.
In order to solve the above technical problems, one technical scheme adopted by the invention is that:
A kind of sodium hypophosphite evaporation technology is provided, sodium hypophosphite aqueous solution is evaporated using triple-effect evaporation plant, specific work
Skill step includes: that sodium hypophosphite is squeezed into 1st effective evaporator with flow appropriate, and the secondary steam for evaporating generation is evaporated through an effect
Enter 2nd effect evaporator after an effect gas-liquid separator separates in device, the secondary steam generated in 2nd effect evaporator is through two effect gas-liquids
Enter triple effect evaporator after separator separation, enters condenser through triple effect gas-liquid separator separates steam after triple effect evaporator evaporation
Condensation discharge；The effect discharging pump that the concentrate of one effect gas-liquid separator passes through positioned at bottom is beaten into triple effect evaporator, and triple effect steams
The concentrate of triple effect gas-liquid separator in hair device is beaten through the triple effect discharging pump of bottom to 2nd effect evaporator, two effect gas-liquid separators
In concentrate reach and beat through two effect discharging pumps to crystallization kettle after normal concentration.
In a preferred embodiment of the present invention, sodium hypophosphite aqueous solution inlet amount is 10 ~ 12 ton/hours.
In a preferred embodiment of the present invention, in 1st effective evaporator, Steam pressure control is in 0.4 ~ 0.5MPa, an effect
Temperature is controlled at 95 ~ 105 DEG C.
In a preferred embodiment of the present invention, in 2nd effect evaporator, two effect temperature controls are at 80 ~ 90 DEG C.
In a preferred embodiment of the present invention, in triple effect evaporator, triple effect temperature is controlled at 70 ~ 80 DEG C.
In a preferred embodiment of the present invention, the vacuum degree of the crystallization kettle is greater than 0.07MPa.
In a preferred embodiment of the present invention, the discharging density of concentrate is greater than 1.4g/ml.
The beneficial effects of the present invention are: a kind of sodium hypophosphite evaporation technology of the present invention, is evaporated using triple-effect evaporation plant
Sodium hypophosphite aqueous solution, heat source of the secondary steam that an effect evaporation generates as two effect evaporations, the secondary card that two effect evaporations generate
Heat source of the word as triple effect evaporation, the consumption of steam only have the 45% of original process steam consumption；Time phosphorus may be implemented in this technique
The continuous evaporation of acid sodium aqueous solution, easy to operate and discharge concentration is more stable, reduces labor intensity, and product quality is more steady
It is fixed.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the triple-effect evaporation plant used in a preferred embodiment of the present invention.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
A kind of sodium hypophosphite evaporation technology is evaporated sodium hypophosphite aqueous solution using triple-effect evaporation plant, the triple effect
Vaporising device includes sequentially connected 1st effective evaporator, 2nd effect evaporator and triple effect evaporator；The 1st effective evaporator includes phase
A logical effect heater 11 and an effect gas-liquid separator 12, the middle-end of the effect heater 11 have a feed inlet 14, and described one
The top for imitating heater 11 is steam inlet tube 6；The 2nd effect evaporator includes the two effect heaters 21 communicated and two effect gas-liquids point
From device 22, the jet chimney of the effect gas-liquid separator 12 leads to the two effects heater 21；The triple effect evaporator includes
The triple effect heater 31 and triple effect gas-liquid separator 32 communicated, the triple effect gas-liquid separator 32 lead to condenser 4；Described one
The bottom of effect gas-liquid separator 12 is provided with effect concentration liquid pipe 13, and connection is into the triple effect evaporator, in the triple effect gas
The bottom of liquid/gas separator 32 is provided with triple effect concentration liquid pipe, and connection is into the 2nd effect evaporator, in the two effects gas-liquid separation
The bottom of device 22 is provided with two effects concentration liquid pipe, connection to discharge nozzle.
It is cold that the one effect heater 11, the two effect heater 21 and 31 lower part of triple effect heater are all connected with steam
Condensate pipe 5.It is provided with an effect discharging pump 13 in the effect concentration liquid pipe, is provided with two effects in the two effects concentration liquid pipe
Discharging pump 23 is provided with triple effect discharging pump 33 in triple effect concentration liquid pipe.Knot is connected with after the two effects discharging pump 23
Brilliant kettle.
Concrete technology of the invention includes the following steps: that hypophosphorous acid receives aqueous solution and with 10 ton/hours of inlet amount squeezes into one
Evaporator is imitated, steam enters 1st effective evaporator from steam inlet tube 6, and the secondary steam for evaporating generation divides through an effect gas-liquid separator 12
Enter 2nd effect evaporator from rear, the secondary steam that 2nd effect evaporator generates enters triple effect after two effect gas-liquid separators 22 separate and steams
Device is sent out to condense and be discharged into condenser 4 through 32 separate vapour of triple effect gas-liquid separator after triple effect evaporator evaporation.One effect gas-liquid
The concentrate of separator 12 is beaten through an effect concentration liquid pipe to triple effect evaporator, and the concentrate of triple effect gas-liquid separator 32 is through bottom
Triple effect discharging pump 33 is beaten to 2nd effect evaporator, and the discharging density of the concentrate of two effect gas-liquid separators 22 passes through after being greater than 1.4g/ml
Two effect discharging pumps 23 are beaten to crystallization kettle.Wherein the temperature of 1st effective evaporator is 95 ~ 105 DEG C, and the temperature of 2nd effect evaporator is 80 ~ 90
DEG C, the temperature of triple effect evaporator is 70 ~ 80 DEG C, and the vacuum degree of crystallization kettle must be greater than 0.07MPa.
In the description of the present invention, it should be noted that the instruction such as term " on ", "lower", "left", "right", "inner", "outside"
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings or the invention product using when usually put
Orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning
Or element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize description of the invention
And equivalent structure or equivalent flow shift made by accompanying drawing content, it is applied directly or indirectly in other relevant technical fields,
It is included within the scope of the present invention.
Claims (7)
1. a kind of sodium hypophosphite evaporation technology, which is characterized in that steamed using triple-effect evaporation plant to sodium hypophosphite aqueous solution
Hair, specific process step includes: that sodium hypophosphite is squeezed into 1st effective evaporator with flow appropriate, evaporates the secondary steam warp of generation
Enter 2nd effect evaporator after an effect gas-liquid separator separates in 1st effective evaporator, the secondary steam warp generated in 2nd effect evaporator
Two effect gas-liquid separator separates after enter triple effect evaporator, triple effect evaporator evaporation after through triple effect gas-liquid separator separates steam into
Enter condenser condensation discharge；The effect discharging pump that the concentrate of one effect gas-liquid separator passes through positioned at bottom is beaten to triple effect evaporator
In, the concentrate of the triple effect gas-liquid separator in triple effect evaporator is beaten through the triple effect discharging pump of bottom to 2nd effect evaporator, two effects
Concentrate in gas-liquid separator is beaten through two effect discharging pumps to crystallization kettle after reaching normal concentration.
2. sodium hypophosphite evaporation technology according to claim 1, which is characterized in that sodium hypophosphite aqueous solution inlet amount is 10
~ 12 ton/hours.
3. sodium hypophosphite evaporation technology according to claim 1, which is characterized in that in 1st effective evaporator, steam pressure
Control is in 0.4 ~ 0.5MPa, and an effect temperature control is at 95 ~ 105 DEG C.
4. sodium hypophosphite evaporation technology according to claim 1, which is characterized in that in 2nd effect evaporator, two effect temperature
Control is at 80 ~ 90 DEG C.
5. sodium hypophosphite evaporation technology according to claim 1, which is characterized in that in triple effect evaporator, triple effect temperature
Control is at 70 ~ 80 DEG C.
6. sodium hypophosphite evaporation technology according to claim 1, which is characterized in that the vacuum degree of the crystallization kettle is greater than
0.07MPa。
7. sodium hypophosphite evaporation technology according to claim 1, which is characterized in that the discharging density of concentrate is greater than
1.4g/ml。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811614261.7A CN109650475A (en) | 2018-12-27 | 2018-12-27 | A kind of sodium hypophosphite evaporation technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811614261.7A CN109650475A (en) | 2018-12-27 | 2018-12-27 | A kind of sodium hypophosphite evaporation technology |
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| Publication Number | Publication Date |
|---|---|
| CN109650475A true CN109650475A (en) | 2019-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811614261.7A Pending CN109650475A (en) | 2018-12-27 | 2018-12-27 | A kind of sodium hypophosphite evaporation technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112044102A (en) * | 2020-08-31 | 2020-12-08 | 江苏康祥实业集团有限公司 | A multistage evaporation plant for evaporation of sodium hypophosphite aqueous solution |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1083637A (en) * | 1964-10-22 | 1967-09-20 | Fedor Petrovich Zaostrovsky | A method for desalting sea water |
| CN1673104A (en) * | 2005-02-03 | 2005-09-28 | 刘德沛 | Waste water treating method and multi-effect evaporator for propylene oxide production |
| US20070240974A1 (en) * | 2006-04-17 | 2007-10-18 | Sd Lizenzverwertungsgesellschaft Mbh & Co. Kg | Method of corrosion prevention |
| CN102058990A (en) * | 2010-12-11 | 2011-05-18 | 湖北兴发化工集团股份有限公司 | Method for concentrating sodium hypophosphite solution |
| CN205773844U (en) * | 2016-05-17 | 2016-12-07 | 常州泰特环境设备工程有限公司 | A kind of high-salt wastewater triple effect evaporation crystallization apparatus without cooling down water |
| CN207384866U (en) * | 2017-10-27 | 2018-05-22 | 江西福尔鑫医药化工有限公司 | A kind of evaporation concentration device for Sodium hypophosphite production |
-
2018
- 2018-12-27 CN CN201811614261.7A patent/CN109650475A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1083637A (en) * | 1964-10-22 | 1967-09-20 | Fedor Petrovich Zaostrovsky | A method for desalting sea water |
| CN1673104A (en) * | 2005-02-03 | 2005-09-28 | 刘德沛 | Waste water treating method and multi-effect evaporator for propylene oxide production |
| US20070240974A1 (en) * | 2006-04-17 | 2007-10-18 | Sd Lizenzverwertungsgesellschaft Mbh & Co. Kg | Method of corrosion prevention |
| CN102058990A (en) * | 2010-12-11 | 2011-05-18 | 湖北兴发化工集团股份有限公司 | Method for concentrating sodium hypophosphite solution |
| CN205773844U (en) * | 2016-05-17 | 2016-12-07 | 常州泰特环境设备工程有限公司 | A kind of high-salt wastewater triple effect evaporation crystallization apparatus without cooling down water |
| CN207384866U (en) * | 2017-10-27 | 2018-05-22 | 江西福尔鑫医药化工有限公司 | A kind of evaporation concentration device for Sodium hypophosphite production |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112044102A (en) * | 2020-08-31 | 2020-12-08 | 江苏康祥实业集团有限公司 | A multistage evaporation plant for evaporation of sodium hypophosphite aqueous solution |
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Application publication date: 20190419 |