CN106277527B - A kind of processing of vinylidene chloride neutralized ratio and utilize method - Google Patents
A kind of processing of vinylidene chloride neutralized ratio and utilize method Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- 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
- C02F1/06—Flash evaporation
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- 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
- C02F1/08—Thin film evaporation
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/28—Treatment of water, waste water, or sewage by sorption
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- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
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- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Abstract
The present invention provides a kind of processing of vinylidene chloride neutralized ratio and using method, belongs to environmental protection and clean manufacturing field.The step of its treatment process is flash distillation falling liquid film stripping, filtering, resin adsorption, oxidation.Neutralized ratio first passes through flash distillation falling liquid film stripping, removes in residul liquid-removing 90% or more halogenated hydrocarbons, and the mechanical admixture that filtering removal production process is brought into further removes the halogenated hydrocarbons in residul liquid-removing subsequently into the absorption of resin adsorption device, and end declines TOC through oxidizing again.The gas condensing recovery halogenated hydrocarbons of falling liquid film stripping is flashed, the resin after absorption is through steam regeneration, and regenerated liquid merges with raffinate carries out flash distillation falling liquid film stripping recycling halogenated hydrocarbons together, and the halogenated hydrocarbons of recycling, which returns to vinylidene chloride production system, can be used as raw materials for production utilization；Raffinate after processing halogenated hydrocarbon content lower than 1mg/L, TOC be lower than 5mg/L, sodium chloride content 20-26%, can part substitutional ion film alkali production brine utilize.
Description
Technical field
The present invention relates to environmental protections and clean manufacturing field, more specifically, it is residual to be related to a kind of vinylidene chloride saponification
The processing of liquid and utilize method.
Background technique
Vinylidene chloride is important Organic Chemicals, generally by the saponification of trichloroethanes and sodium hydroxide
It is obtained.While generating vinylidene chloride, neutralized ratio can be generated, which is to contain halogenated hydrocarbons, micro halogenated hydrocarbons
The alkaline aqueous solution of hydrolysate and sodium chloride, the content 20-28% of sodium chloride, contained halogenated hydrocarbons is mainly halogenated alkane two
Chloroethanes, trichloroethanes and alkenyl halide vinyl chloride, dichloroethylene, trichloro ethylene, the concentration of halogenated the hydrocarbon component are aggregated in 1000-
2000mg/L, this neutralized ratio form difficult tractable environment waste material since saliferous height and halogenated hydrocarbon content are high, and halogenated hydrocarbons exists
Separation in water phase, current method are that feed liquid heats up and is stripped with vapor, and flash distillation can also reduce halogenated hydrocarbons in water and contain
Amount, but equilibrium concentration is higher, still containing compared with polyhalohydrocarbon in treated raffinate, typically up to less than being kept completely separate halogenated hydrocarbons
Desired effect.
China Patent Publication No.: CN 201410003693X, publication date: on January 21st, 2015, disclosing a kind of with high salt has
The processing method of machine waste water.Including air lift and resin or steps of activated carbon adsorption, the air lift be by steam heating waste water,
Condensation enters solvent recovering system after methylene chloride in waste water is vaporized, and needs external complement heat source, and the resin or
Activated carbon adsorption is not directed to the regeneration of saturation adsorbent, and waste water still needs after processing send sewage plant to be further processed.
China Patent Publication No.: publication date: CN 201410301033X on November 19th, 2014, discloses a kind of ethylene
The processing method of process for oxychlorination vinyl chloride production waste water.The stripping medium is the gaseous mixture of ozone and air, is not directed to dodge
It steams, the pressure condition of air lift is not also defined.
The above-mentioned published patent does not need to find a kind of disposal options, energy for the characteristic of vinylidene chloride neutralized ratio
Its harm to environment is enough eliminated, and can be used while disposition.
China Patent Publication No.: CN101058445, disclosing a kind of resin adsorption method, to release methane chloride in waste water raw
The method of object toxicity.Its step is filtering and resin adsorption: adsorbed the absorption resin vapor of methane chloride, methanol or
Ethanol solution is as desorbing agent desorption and regeneration.After processing, the concentration of methane chloride in waste water can be made to reach national row
Put standard.
China Patent Publication No.: CN1803641 is disclosed a kind of using integrated technique realization para-aminophenol production waste water
Improvement and method of resource, comprising adjusting the pH of waste water, resin adsorption, oxidation.
The above-mentioned published patent is not directed to flash falling liquid film stripping for the feature integration of vinylidene chloride neutralized ratio
Treatment process.
Summary of the invention
1. technical problems to be solved by the inivention
The problem of for prior art described above, the present invention provides a kind of vinylidene chloride neutralized ratios
Handle and utilize method.The step of its treatment process is flash distillation falling liquid film stripping, filtering, resin adsorption, oxidation.Flash falling liquid film stripping
Gas condensing recovery halogenated hydrocarbons, the absorption water outlet of absorber is when reaching equilibrium adsorption concentration, resin adsorption device using steam again
Halogenated hydrocarbons is recycled after life and in regeneration condensate liquid, the halogenated hydrocarbons of recycling is utilized as the raw material of vinylidene chloride production system；
Halogenated hydrocarbon content is lower than 5mg/L, sodium chloride content 20-26% lower than 1mg/L, TOC after processing, being capable of part substitutional ion film alkali
The brine of production utilizes.Realize the multiple profit of clean manufacturing, environmental protection and economic benefit.
2. technical solution
To achieve the above object, technical solution provided by the invention are as follows:
A kind of processing method of vinylidene chloride neutralized ratio, the steps include:
Step 1, neutralized ratio first pass through flash distillation falling liquid film stripping, remove in waste water 90% or more halogenated hydrocarbons；；
Step 2, the mechanical admixture that filtering removal production process is brought into；
Step 3, the halogenated hydrocarbons into resin adsorption device absorption raffinate；Water outlet after resin adsorption uses oxidant oxygen
Change the halogenated hydrocarbons hydrolysate (wherein, the content of halogenated hydrocarbons hydrolysate is characterized with TOC) for removing micro (i.e. 10%), oxidant
It can be ozone, chlorine dioxide, sodium hypochlorite, preferably ozone；
Step 4, oxidation removal remain halogenated hydrocarbons hydrolysate, in treated raffinate halogenated hydrocarbon content lower than 1mg/L,
TOC is lower than 5mg/L, and the brine that can be produced as ionic membrane caustic soda utilizes.
Preferably, neutralized ratio described in step 1 is the alkalinity containing halogenated hydrocarbons, halogenated hydrocarbons hydrolysate and sodium chloride
Aqueous solution, the content 20-28% of sodium chloride, contained halogenated hydrocarbons are dichloroethanes, trichloroethanes and the halogen in halogenated alkane
For vinyl chloride, dichloroethylene, the trichloro ethylene in alkene, the concentration of halogenated the hydrocarbon component is aggregated in 1000-2000mg/L.
Preferably, flash distillation falling liquid film stripping is completed in a tower, and the vacuum degree of flash distillation is excellent in 0.01-0.05MPa
It is selected as 0.02-0.025MPa；Gas used in stripping is nitrogen or air, preferably nitrogen, liquid-gas ratio 20-200L/m3, excellent
It is selected as 80-120L/m3。
Preferably, the resin adsorption device of step 3 is adsorbed using 2-9 grades of adsorbers serial, preferably 4-5 grades of series connection, absorption
Flow velocity is 0.5-5BV/h (in terms of one-stage resin volume).
Preferably, when the absorption water outlet of the resin adsorption device of step 3 reaches equilibrium adsorption concentration, resin adsorption device is used
Steam regeneration, pressure 0.1-1.0MPa.
Preferably, the regeneration water vapour, pressure 0.5-0.7MPa.
Preferably, the regeneration water vapour, the amount of steam of every cube of resin of regeneration are 200-5000kg, preferably
For 1500-2000kg.
Preferably, the halogenated hydrocarbons hydrolysate micro using oxidizing removal of the water outlet after resin adsorption, oxidant
Selection uses one of ozone, chlorine dioxide, sodium hypochlorite, and preferably ozone, ozone oxidation set of procedures ultraviolet radiation is smelly
Oxygen dosage is 10-100mg/L, preferable amount 30-50mg/L.
A kind of utilization method of vinylidene chloride neutralized ratio, according to a kind of above-described vinylidene chloride neutralized ratio
Processing method, recycle halogenated hydrocarbons after the gas condensation of the flash distillation falling liquid film stripping in step 1, the halogenated hydrocarbons of recycling uses inclined two
Vinyl Chloride Production System utilizes as a raw material for production；Step 4 treated raffinate is utilized as the brine that ionic membrane caustic soda produces.
Preferably, merge after the condensation of regeneration water vapour with neutralized ratio and carry out flash distillation falling liquid film stripping together.
3. beneficial effect
Using technical solution provided by the invention, compared with prior art, have the following beneficial effects:
(1) present invention process is reasonable, and flash distillation falling liquid film stripping does not need external heat, 99.9% halogenated hydrocarbons in neutralized ratio
It is effectively removed, avoids environmental pollution；
(2) present invention proposes the method for the utilization of resources: neutralized ratio while effectively being disposed to neutralized ratio
In halogenated hydrocarbons recycled and return to saponification workshop section；Halogenated hydrocarbon content is lower than lower than 1mg/L, TOC in treated raffinate
5mg/L, sodium chloride content 20-26%, the brine that can be used as ionic membrane caustic soda production utilize；
(3) present invention is used to main neutralized ratio component, realizes the clean manufacturing of vinylidene chloride, has
There is the economic benefit of highly significant；
(4) method provided by the present invention is a set of combined treatment process, and one such or two kinds of process combinations can also
The requirement of processing can be reached, but be not maximally utilizing for economy and resource, the present invention is realized will with the method for resource reusing
The production waste material (neutralized ratio) of vinylidene chloride is turned waste into wealth.
Detailed description of the invention
Fig. 1 is process flow diagram of the invention.
Specific embodiment
For the contents of the present invention are explained further, below with reference to embodiment, the present invention is described in detail.
Embodiment 1
Saponification workshop section of the neutralized ratio of this example from certain enterprise's vinylidene chloride process units, main component are halogenated
Hydrocarbon adds up to 1660mg/L, the content 26% of sodium chloride, the temperature of raffinate to be 64 DEG C.In conjunction with Fig. 1, step is handled and utilized are as follows:
(1) neutralized ratio first passes through flash distillation falling liquid film stripping: flash chamber vacuum degree is 0.02MPa, and gas used in stripping is
Air, liquid-gas ratio 95L/m3.Condensate liquid 5.4g/m is obtained after stripping and flash gas condensation3Neutralized ratio, mixing among these
Halogenated hydrocarbons is 1590g, and the halogenated hydrocarbons of recycling is used vinylidene chloride production system and utilized as a raw material for production；
(2) it filters: using the quartz sand layer of 0.5-1mm partial size, thickness 700mm as filter medium, filtering velocity 10m/h removes life
The mechanical admixture that production process is brought into；
(3) resin adsorption uses 4 grades of concatenated adsorption systems, and adsorption flow rate is 4BV/h (in terms of one-stage resin volume),
The steam regeneration for being 0.8MPa with pressure after resin adsorption saturation, the condensed condensate liquid of regeneration steam are muddy, collections
This partial condensation liquid and neutralized ratio go flash distillation falling liquid film stripping processing together；
(4) raffinate is being passed through the ozone prepared with pure oxygen, ozone usage 20mg/L, ozone oxidation after resin adsorption
Set of procedures ultraviolet radiation.
Relevant parameter index in 1 embodiment 1 of table before and after each step process
| Index | Halogenated hydrocarbons adds up to (mg/L) | Temperature (DEG C) | TOC(mg/L) | Sodium chloride (quality %) |
| Neutralized ratio | 1660 | 64 | / | 26 |
| After flashing falling liquid film stripping | 220 | 41 | / | 26 |
| After resin adsorption | 0.3 | / | 15 | 26 |
| After ozone oxidation | 0.2 | / | 4.4 | 26 |
Raffinate after treatment mixes commodity brine in the ratio of 5% (mass ratio), the electrolysis with ion-exchange film to chlor-alkali plant
Device does not have adverse reaction.
Embodiment 2
The basic step of this example is a difference in that the flash chamber vacuum degree of flash distillation falling liquid film stripping is with example 1
0.01MPa, gas used in stripping are air, liquid-gas ratio 50L/m3；Ozone oxidation process does not gather ultraviolet radiation, smelly
Oxygen dosage is 10mg/L.
Relevant parameter index in 2 embodiment 2 of table before and after each step process
| Index | Halogenated hydrocarbons adds up to (mg/L) | Temperature (DEG C) | TOC(mg/L) | Sodium chloride (quality %) |
| Neutralized ratio | 2110 | 66 | / | 27 |
| After flashing falling liquid film stripping | 105 | 36 | / | 27.4 |
| After resin adsorption | 0.2 | / | 22 | 27.4 |
| After ozone oxidation | 0.2 | / | 11 | 27.4 |
Raffinate after treatment mixes commodity pig in the ratio of 10% (mass ratio), to the experimental rig of electrolysis with ion-exchange film
There is no adverse reaction.
Embodiment 3
Saponification workshop section of the neutralized ratio of this example from certain enterprise's vinylidene chloride process units, main component are halogenated
Hydrocarbon adds up to 2120mg/L, the content 28% of sodium chloride, the temperature of raffinate to be room temperature.In conjunction with Fig. 1, step is handled and utilized are as follows:
(1) neutralized ratio first passes through flash distillation falling liquid film stripping: gas used is nitrogen, liquid-gas ratio 10L/m3；
(2) it filters: being filtered with the accurate filter of 50 μ filtering accuracies, the mechanical admixture that removal production process is brought into；
(3) resin adsorption uses 2 grades of concatenated adsorption systems, and adsorption flow rate is 0.5BV/h (with one-stage resin volume
Meter), resin adsorption saturation after be 0.1MPa with pressure steam regeneration, the condensed condensate liquid of regeneration steam is muddy；
(4) raffinate is being passed through the ozone prepared with pure oxygen, ozone usage 50mg/L, ozone oxidation after resin adsorption
Set of procedures ultraviolet radiation.
Relevant parameter index in 3 embodiment 3 of table before and after each step process
| Index | Halogenated hydrocarbons adds up to (mg/L) | Temperature (DEG C) | TOC(mg/L) | Sodium chloride (quality %) |
| Neutralized ratio | 2120 | Room temperature | / | 28 |
| After falling liquid film stripping | 150 | / | / | 29 |
| After resin adsorption | 0.3 | / | 18 | / |
Embodiment 4
Saponification workshop section of the neutralized ratio of this example from certain enterprise's vinylidene chloride process units, main component are halogenated
Hydrocarbon adds up to 2012mg/L, the content 26% of sodium chloride, the temperature of raffinate to be 50 DEG C.In conjunction with Fig. 1, step is handled and utilized are as follows:
(1) flash falling liquid film stripping: flash chamber vacuum degree is 0.02MPa, and gas used in stripping is nitrogen, and liquid-gas ratio is
50L/m3.Condensate liquid 5.8kg/m is obtained after stripping and flash gas condensation3Neutralized ratio, mixing halogenated hydrocarbons among these are
1960g, the halogenated hydrocarbons of recycling are used vinylidene chloride production system and are utilized as a raw material for production；
(2) it filters: using the quartz sand layer of 0.5-1mm partial size, thickness 700mm as filter medium, filtering velocity 10m/h removes life
The mechanical admixture that production process is brought into；
(3) resin adsorption uses 2 grades of concatenated adsorption systems, and adsorption flow rate is 1BV/h (in terms of one-stage resin volume),
The steam regeneration for being 0.5MPa with pressure after resin adsorption saturation, the condensed condensate liquid of regeneration steam are muddy, collections
This partial condensation liquid merges with neutralized ratio goes flash distillation falling liquid film stripping processing together；
(4) raffinate is being passed through the ozone prepared with pure oxygen, ozone usage 30mg/L, ozone oxidation after resin adsorption
Set of procedures ultraviolet radiation.
Relevant parameter index in 4 embodiment 4 of table before and after each step process
| Index | Halogenated hydrocarbons adds up to (mg/L) | Temperature (DEG C) | TOC(mg/L) | Sodium chloride (quality %) |
| Neutralized ratio | 2012 | 50 | / | 26 |
| After flashing falling liquid film stripping | 195 | 33 | / | 26.6 |
| After resin adsorption | 0.5 | / | 18 | 26.6 |
| After ozone oxidation | 0.3 | / | 2.5 | 26.6 |
Raffinate after treatment mixes commodity brine in the ratio of 5% (mass ratio), the electrolysis with ion-exchange film to chlor-alkali plant
Device does not have adverse reaction.
Embodiment 5
Saponification workshop section of the neutralized ratio of this example from certain enterprise's vinylidene chloride process units, main component are halogenated
Hydrocarbon adds up to 2012mg/L, the content 26% of sodium chloride, the temperature of raffinate to be room temperature.In conjunction with Fig. 1, step is handled and utilized are as follows:
(1) flash distillation falling liquid film stripping operating condition is the same as example 4；
(2) it filters: being filtered with the accurate filter of 50 μ filtering accuracies；
(3) resin adsorption uses 9 grades of concatenated adsorption systems, and adsorption flow rate is 5BV/h (in terms of one-stage resin volume),
The steam regeneration for being 0.1MPa with pressure after resin adsorption saturation, regeneration with the condensed condensate liquid of water vapour be it is muddy,
Be collected separately do not return receipts go flash distillation falling liquid film stripping processing；
(4) raffinate is being passed through the ozone prepared with pure oxygen, ozone usage 20mg/L, ozone oxidation after resin adsorption
Set of procedures ultraviolet radiation.
Relevant parameter index in 5 embodiment 5 of table before and after each step process
| Index | Halogenated hydrocarbons adds up to (mg/L) | Temperature (DEG C) | TOC(mg/L) | Sodium chloride (quality %) |
| Neutralized ratio | 2012 | 50 | / | 26 |
| After flashing falling liquid film stripping | 195 | 33 | / | 26.6 |
| After resin adsorption | 0.3 | / | 15 | 26.6 |
| After ozone oxidation | 0.15 | / | 3 | 26.6 |
Embodiment 6
The basic step of this example is a difference in that ozone oxidation is changed to sodium hypochlorite and chlorine dioxide respectively with example 5
Oxidation.Hypochlorite oxidation condition are as follows: dosage 15g/L, pH7.5, reaction time 40 minutes；Chlorine Dioxide Oxidation condition are as follows:
Dosage 20mg/L, pH9.5.
Relevant parameter index in 6 embodiment 6 of table before and after each step process
| Index | Halogenated hydrocarbons adds up to (mg/L) | Temperature (DEG C) | TOC(mg/L) | Sodium chloride (quality %) |
| After resin adsorption | 0.3 | / | 15 | 26.6 |
| After sodium hypochlorite | 0.2 | / | 9 | 26.4 |
| After chlorine dioxide | 0.2 | / | 12 | 26.6 |
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and practical step is not limited thereto.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar step mode and embodiment, are within the scope of protection of the invention.
Claims (10)
1. a kind of processing method of vinylidene chloride neutralized ratio, the steps include:
Step 1, neutralized ratio first pass through flash distillation falling liquid film stripping；
Step 2, the mechanical admixture that filtering removal production process is brought into；
Step 3, the halogenated hydrocarbons into resin adsorption device absorption raffinate；
Step 4, oxidation removal remain halogenated hydrocarbons hydrolysate, and the oxidation process uses ozone oxidation, and oxidation process set is purple
Outer light radiation.
2. the processing method of vinylidene chloride neutralized ratio according to claim 1, it is characterised in that: described in step 1
Neutralized ratio is the alkaline aqueous solution containing halogenated hydrocarbons, a small amount of halogenated hydrocarbons hydrolysate and sodium chloride, the content 20- of sodium chloride
28%, contained halogenated hydrocarbons is halogenated alkane dichloroethanes, trichloroethanes and alkenyl halide vinyl chloride, dichloroethylene, three chloroethenes
The concentration of alkene, halogenated the hydrocarbon component is aggregated in 1000-2000mg/L.
3. a kind of processing method of vinylidene chloride neutralized ratio according to claim 1, it is characterised in that: flash distillation falling liquid film
Stripping is completed in a tower, and the vacuum degree of flash distillation is in 0.01-0.05MPa；Gas used in stripping is nitrogen or sky
Gas.
4. a kind of processing method of vinylidene chloride neutralized ratio according to claim 1, it is characterised in that: step 3
Resin adsorption device is adsorbed using 2-9 grades of adsorbers serial, adsorption flow rate 0.5-5BV/h.
5. a kind of processing method of vinylidene chloride neutralized ratio according to claim 1, it is characterised in that: step 3
When the absorption water outlet of resin adsorption device reaches equilibrium adsorption concentration, resin adsorption device uses steam regeneration, pressure 0.1-
1.0MPa。
6. a kind of processing method of vinylidene chloride neutralized ratio according to claim 5, it is characterised in that: it is described again
Raw water vapour, pressure 0.5-0.7MPa.
7. a kind of processing method of vinylidene chloride neutralized ratio according to claim 5, it is characterised in that: it is described again
Raw water vapour, the amount of steam of every cube of resin of regeneration are 200-5000kg.
8. a kind of processing method of vinylidene chloride neutralized ratio according to claim 5, it is characterised in that: resin adsorption
The halogenated hydrocarbons hydrolysate micro using ozone oxidation agent oxidation removal of water outlet afterwards, ozone usage 10-100mg/L.
9. a kind of utilization method of vinylidene chloride neutralized ratio, which is characterized in that one kind inclined two according to claim 1
The processing method of vinyl chloride neutralized ratio recycles halogenated hydrocarbons after the gas condensation of the flash distillation falling liquid film stripping in step 1, recycling
Halogenated hydrocarbons is used vinylidene chloride production system and is utilized as a raw material for production；Step 4 treated raffinate is raw as ionic membrane caustic soda
The brine of production utilizes.
10. a kind of utilization method of vinylidene chloride neutralized ratio according to claim 9, which is characterized in that recycled water
Merge after steam condensation with neutralized ratio and carries out flash distillation falling liquid film stripping together.
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