CN109205896A - System and method for treating salt-containing glycerol wastewater - Google Patents
System and method for treating salt-containing glycerol wastewater Download PDFInfo
- Publication number
- CN109205896A CN109205896A CN201710523679.6A CN201710523679A CN109205896A CN 109205896 A CN109205896 A CN 109205896A CN 201710523679 A CN201710523679 A CN 201710523679A CN 109205896 A CN109205896 A CN 109205896A
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- China
- Prior art keywords
- saliferous
- glycerol wastewater
- hydrochloric acid
- glycerol
- acid
- Prior art date
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- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 title claims abstract description 393
- 239000002351 wastewater Substances 0.000 title claims abstract description 129
- 150000003839 salts Chemical class 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 18
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 162
- 239000000706 filtrate Substances 0.000 claims abstract description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000002156 mixing Methods 0.000 claims abstract description 36
- 239000002253 acid Substances 0.000 claims description 75
- 238000012545 processing Methods 0.000 claims description 52
- 239000000047 product Substances 0.000 claims description 23
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 18
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 18
- 238000003672 processing method Methods 0.000 claims description 17
- 239000007789 gas Substances 0.000 claims description 14
- 239000008400 supply water Substances 0.000 claims description 8
- 238000001556 precipitation Methods 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 7
- DKAGJZJALZXOOV-UHFFFAOYSA-N hydrate;hydrochloride Chemical compound O.Cl DKAGJZJALZXOOV-UHFFFAOYSA-N 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 10
- 239000011780 sodium chloride Substances 0.000 abstract description 5
- 238000004821 distillation Methods 0.000 abstract description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 3
- 230000002378 acidificating effect Effects 0.000 abstract 3
- 239000011259 mixed solution Substances 0.000 abstract 2
- 239000000243 solution Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 235000009508 confectionery Nutrition 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- LRWZZZWJMFNZIK-UHFFFAOYSA-N 2-chloro-3-methyloxirane Chemical compound CC1OC1Cl LRWZZZWJMFNZIK-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011260 aqueous acid Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- -1 civil construction Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Removal Of Specific Substances (AREA)
Abstract
一种含盐甘油废水处理系统与方法，其中含盐甘油废水处理系统包括混合槽、过滤装置、蒸馏塔与给水装置。混合槽用于混合含盐甘油废水与浓盐酸，从而获得混合液。过滤装置连通至混合槽，且对混合液进行过滤，从而获得酸性滤液与析出的盐。蒸馏塔连通至过滤装置，且接收来自于过滤装置的酸性滤液。给水装置将水供应至酸性滤液中。上述含盐甘油废水处理系统与方法可有效地将盐酸回收利用。
A system and method for treating saline glycerol wastewater, wherein the system comprises a mixing tank, a filtering device, a distillation tower and a water supply device. The mixing tank is used to mix saline glycerol wastewater with concentrated hydrochloric acid to obtain a mixed solution. The filtering device is connected to the mixing tank and filters the mixed solution to obtain an acidic filtrate and precipitated salt. The distillation tower is connected to the filtering device and receives the acidic filtrate from the filtering device. The water supply device supplies water to the acidic filtrate. The system and method for treating saline glycerol wastewater can effectively recycle hydrochloric acid.
Description
[technical field]
The present invention relates to a kind of waste water treatment system and methods, and more particularly to a kind of saliferous Glycerol Wastewater processing system
With method.
[background technique]
In the manufacturing process of many chemical raw materials, it can generate containing more highly-saline Glycerol Wastewater.For example, epoxy
Chloropropane be the most important raw material of synthetic epoxy resin, and epoxy resin be mainly used in coating, laminated plates (printed circuit board),
The fields such as solid (adhesive), civil construction, composite material.However, can be produced when manufacturing epoxychloropropane using glycerol method
It bears containing more highly-saline Glycerol Wastewater, by-product includes glycerol, water, salt and polyglycerine.
In the prior art, excessive concentrated hydrochloric acid is often used to handle saliferous Glycerol Wastewater, and salt is analyzed.However,
How hydrochloric acid is effectively recycled as to the target of current industry research.
[summary of the invention]
The present invention provides a kind of saliferous Glycerol Wastewater processing system and method, can effectively utilize HCl recovery.
The present invention proposes that a kind of saliferous Glycerol Wastewater processing system, including mixing channel, filter device, destilling tower and water supply fill
It sets.Mixing channel is for mixing saliferous Glycerol Wastewater and concentrated hydrochloric acid, to obtain mixed liquor.Filter device is connected to mixing channel, and
Mixed liquor is filtered, to obtain the salt of acid filtrate and precipitation.Destilling tower is connected to filter device, and receive from
The acid filtrate of filter device.Waterworks supply water in acid filtrate.
According to described in one embodiment of the invention, in above-mentioned saliferous Glycerol Wastewater processing system, it is sweet to may also include saliferous
Oily waste water feeding mechanism and concentrated hydrochloric acid feeding mechanism.Saliferous Glycerol Wastewater feeding mechanism is connected to mixing channel.Concentrated hydrochloric acid supply dress
It sets and is connected to mixing channel.
According to described in one embodiment of the invention, in above-mentioned saliferous Glycerol Wastewater processing system, the concentration example of concentrated hydrochloric acid
In this way 30% to 37%.
According to described in one embodiment of the invention, in above-mentioned saliferous Glycerol Wastewater processing system, the amount of concentrated hydrochloric acid is for example
It is 0.5 times to 1.5 times of the amount of saliferous Glycerol Wastewater.
According to described in one embodiment of the invention, in above-mentioned saliferous Glycerol Wastewater processing system, it is supplied to acid filtrate
In the amount of water be, for example, 0.25 times to 1 times of amount of saliferous Glycerol Wastewater.
According to described in one embodiment of the invention, in above-mentioned saliferous Glycerol Wastewater processing system, waterworks can be connected to
To the acid filtrate reserve tank being connected between filter device and destilling tower, can be connected to be connected to filter device and destilling tower it
Between acid filtrate transfer pipeline or can directly be connected to destilling tower.
According to described in one embodiment of the invention, in above-mentioned saliferous Glycerol Wastewater processing system, it may also include tower top production
Object reserve tank.Overhead product reserve tank is connected to destilling tower, and stores the overhead product of destilling tower.Overhead product includes hydrochloric acid water
Solution.
It further include hydrogen chloride gas in above-mentioned saliferous Glycerol Wastewater processing system according to described in one embodiment of the invention
Body feeding mechanism.Hydrogen chloride gas feeding mechanism is connected to overhead product reserve tank.
According to described in one embodiment of the invention, in above-mentioned saliferous Glycerol Wastewater processing system, it may also include return pipe
Road.Return line is connected between overhead product reserve tank and mixing channel.
The present invention proposes a kind of saliferous Glycerol Wastewater processing method, includes the following steps.Concentrated hydrochloric acid and saliferous glycerol are given up
Water mixes and carries out processing of saltouing, to obtain mixed liquor.Mixed liquor is filtered, to obtain acid filtrate and precipitation
Salt.It supplies water in acid filtrate.Acid filtrate after being diluted with water is distilled, thus isolate aqueous hydrochloric acid solution with
Glycerol Wastewater.
According to described in one embodiment of the invention, in above-mentioned saliferous Glycerol Wastewater processing method, the concentration example of concentrated hydrochloric acid
In this way 30% to 37%.
According to described in one embodiment of the invention, in above-mentioned saliferous Glycerol Wastewater processing method, the amount of concentrated hydrochloric acid is for example
It is 0.5 times to 1.5 times of the amount of saliferous Glycerol Wastewater.
According to described in one embodiment of the invention, in above-mentioned saliferous Glycerol Wastewater processing method, it is supplied to acid filtrate
In the amount of water be, for example, 0.25 times to 1 times of amount of saliferous Glycerol Wastewater.
According to described in one embodiment of the invention, in above-mentioned saliferous Glycerol Wastewater processing method, acidity is supplied water to
Method in filtrate is, for example, to supply water in acid filtrate reserve tank, be supplied in acid filtrate transfer pipeline or directly supply
It should be into the destilling tower to be distilled to acid filtrate.
According to described in one embodiment of the invention, in above-mentioned saliferous Glycerol Wastewater processing method, hydrochloric acid may additionally include
Hydrogen chloride gas is passed through in aqueous solution.
According to described in one embodiment of the invention, in above-mentioned saliferous Glycerol Wastewater processing method, may also include hydrochloric acid
Water solution cycle utilizes.
Based on above-mentioned, in saliferous Glycerol Wastewater processing system and method proposed by the invention, due to using concentrated hydrochloric acid
Processing of saltouing, therefore the salinity that can be effectively precipitated in saliferous Glycerol Wastewater are carried out to saliferous Glycerol Wastewater.Further, since passing through
Water is added in the acid filtrate obtained by filtering, therefore after distilling to the acid filtrate after being diluted with water, it can be effective
Ground utilizes HCl recovery.
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and cooperate institute's accompanying drawings
It is described in detail below.
[Detailed description of the invention]
Fig. 1 is the schematic diagram of the saliferous Glycerol Wastewater processing system of one embodiment of the invention.
Fig. 2 is the schematic diagram of the saliferous Glycerol Wastewater processing system of another embodiment of the present invention.
Fig. 3 is the schematic diagram of the saliferous Glycerol Wastewater processing system of another embodiment of the present invention.
Fig. 4 is the flow chart that the saliferous Glycerol Wastewater of one embodiment of the invention is handled.
Fig. 5 is between the concentrated hydrochloric acid amount of an experimental example of the invention and the ratio and the salt rate of recovery of saliferous Glycerol Wastewater amount
Graph of relation.
[symbol description]
100,200,300: saliferous Glycerol Wastewater processing system
102: mixing channel
104: filter device
106: destilling tower
108: waterworks
110: acid filtrate reserve tank
112: saliferous Glycerol Wastewater feeding mechanism
114: concentrated hydrochloric acid feeding mechanism
116: overhead product reserve tank
118: hydrogen chloride gas feeding mechanism
120: return line
202: acid filtrate transfer pipeline
S100, S102, S104, S106, S108, S110: step
[specific embodiment]
Fig. 1 is the schematic diagram of the saliferous Glycerol Wastewater processing system of one embodiment of the invention.Fig. 2 is another implementation of the present invention
The schematic diagram of the saliferous Glycerol Wastewater processing system of example.Fig. 3 is the saliferous Glycerol Wastewater processing system of another embodiment of the present invention
Schematic diagram.Fig. 4 is the flow chart that the saliferous Glycerol Wastewater of one embodiment of the invention is handled.
Fig. 1 is please referred to, saliferous Glycerol Wastewater processing system 100 includes mixing channel 102, filter device 104, destilling tower 106
With waterworks 108.In addition, saliferous Glycerol Wastewater processing system 100 may also include acid filtrate reserve tank 110, saliferous glycerol
Waste water feeding mechanism 112, concentrated hydrochloric acid feeding mechanism 114, overhead product reserve tank 116, hydrogen chloride gas feeding mechanism 118 with return
At least one of flow tube road 120.Saliferous Glycerol Wastewater processing system 100 can separate the salinity in saliferous Glycerol Wastewater, from
And reach desalination effect.
Mixing channel 102 is for mixing saliferous Glycerol Wastewater and concentrated hydrochloric acid, to obtain mixed liquor.It, can in mixing channel 102
Processing of saltouing is carried out to saliferous Glycerol Wastewater by concentrated hydrochloric acid, so as to the salinity being effectively precipitated in saliferous Glycerol Wastewater.Contain
The mixed method of salt Glycerol Wastewater and concentrated hydrochloric acid is, for example, to be stirred.The concentration of concentrated hydrochloric acid is, for example, 30% to 37%.Dense salt
The amount of acid is, for example, 0.5 times to 1.5 times of the amount of saliferous Glycerol Wastewater, can be more effectively precipitated in saliferous Glycerol Wastewater whereby
Salinity.
Filter device 104 is connected to mixing channel 102, and is filtered to mixed liquor, to obtain acid filtrate and be precipitated
Salt, salinity can be separated from mixed liquor whereby.Filter device 104 is, for example, press type filter (filter press).
Destilling tower 106 is connected to filter device 104, and receives the acid filtrate from filter device 104.Destilling tower
106 can distill the acid filtrate from filter device 104.In this embodiment, from the acid of filter device 104
Property filtrate can first be stored in acid filtrate reserve tank 110, then be delivered in destilling tower 106, but the present invention is not limited thereto.
Waterworks 108 supply water in acid filtrate, with the acid filtrate after being diluted with water.In this embodiment
In, waterworks 108 can be connected to the acid filtrate reserve tank 110 being connected between filter device 104 and destilling tower 106.For
It should be, for example, 0.25 times to 1 times of the amount of saliferous Glycerol Wastewater to the amount of the water in acid filtrate.
It is the acid filtrate after being diluted with water as received by destilling tower 106, to the acid after being diluted with water
Property filtrate distilled after, can get including aqueous hydrochloric acid solution overhead product with include Glycerol Wastewater tower bottom product, thus
Isolate aqueous hydrochloric acid solution and Glycerol Wastewater.Whereby, saliferous Glycerol Wastewater processing system 100 can be effectively by HCl recovery benefit
With.
Saliferous Glycerol Wastewater feeding mechanism 112 is connected to mixing channel 102, it is possible to provide saliferous Glycerol Wastewater to mixing channel 102
In.Concentrated hydrochloric acid feeding mechanism 114 is connected to mixing channel 102, it is possible to provide concentrated hydrochloric acid is into mixing channel 102.
Overhead product reserve tank 116 is connected to destilling tower 106, and stores the overhead product of destilling tower 106, and wherein tower top produces
Object includes aqueous hydrochloric acid solution.
Hydrogen chloride gas feeding mechanism 118 is connected to overhead product reserve tank 116, can be in the hydrochloric acid included by overhead product
Hydrogen chloride gas is passed through in aqueous solution.Therefore, the concentration of aqueous hydrochloric acid solution can be adjusted by hydrogen chloride gas feeding mechanism 118,
To facilitate recycling for aqueous hydrochloric acid solution.
Return line 120 is connected between overhead product reserve tank 116 and mixing channel 102, can make to adjust the salt after concentration
Aqueous acid flows back into mixing channel 102, to recycle again.
Based on the above embodiment it is found that in saliferous Glycerol Wastewater processing system 100, due to using concentrated hydrochloric acid sweet to saliferous
Oily waste water carries out processing of saltouing, therefore the salinity that can be effectively precipitated in saliferous Glycerol Wastewater.Further, since via filtering and
Water is added in the acid filtrate of acquisition, therefore after distilling to the acid filtrate after being diluted with water, it can be effectively by hydrochloric acid
It recycles.
Referring to Fig. 1 and Fig. 2, at the saliferous Glycerol Wastewater processing system 200 of Fig. 2 and the saliferous Glycerol Wastewater of Fig. 1
The difference of reason system 100 is as follows.In saliferous Glycerol Wastewater processing system 200, waterworks 108, which can be connected to, is connected to filtering
Acid filtrate transfer pipeline 202 between device 104 and destilling tower 106, to supply water in acid filtrate, to be added
Acid filtrate after water dilution.In addition, the saliferous Glycerol Wastewater processing system of the saliferous Glycerol Wastewater processing system 200 of Fig. 2 and Fig. 1
System 100 has similar effect, and identical component indicates that this will not be repeated here using identical symbol.
Referring to Fig. 1 and Fig. 3, at the saliferous Glycerol Wastewater processing system 300 of Fig. 3 and the saliferous Glycerol Wastewater of Fig. 1
The difference of reason system 300 is as follows.In saliferous Glycerol Wastewater processing system 300, waterworks 108 can directly be connected to destilling tower
106, to supply water in acid filtrate, with the acid filtrate after being diluted with water.In addition, the saliferous glycerol of Fig. 3 is useless
Water treatment system 300 has similar effect to the saliferous Glycerol Wastewater processing system 100 of Fig. 1, and identical component uses phase
Same symbol indicates that this will not be repeated here.
Fig. 4 is the flow chart that the saliferous Glycerol Wastewater of one embodiment of the invention is handled.Hereinafter, by the saliferous glycerol of Fig. 1
Waste water treatment system 100 illustrates the saliferous Glycerol Wastewater processing method of Fig. 4, but the present invention is not limited thereto.In other realities
It applies in example, other saliferous Glycerol Wastewater processing systems can be used also to carry out the saliferous Glycerol Wastewater processing method of Fig. 4.Saliferous is sweet
Connection relationship, characteristic and effect of each component in oily waste water treatment system 100 in hereinbefore at large being described, therefore
It is hereinafter not repeated to illustrate.
Fig. 1 and Fig. 4 are please referred to, step S100 is carried out, concentrated hydrochloric acid is mixed to saliferous Glycerol Wastewater and carried out processing of saltouing,
To obtain mixed liquor.For example, saliferous Glycerol Wastewater feeding mechanism 112 can be used to provide saliferous Glycerol Wastewater to mixing channel
In 102, and hydrochloric acid feeding mechanism 114 can be used to provide concentrated hydrochloric acid into mixing channel 102, thus by dense salt in mixing channel 102
Acid is mixed with saliferous Glycerol Wastewater.In addition, in mixing channel 102 place of saltouing can be carried out to saliferous Glycerol Wastewater by concentrated hydrochloric acid
Reason, so as to the salinity being effectively precipitated in saliferous Glycerol Wastewater.The mixed method of saliferous Glycerol Wastewater and concentrated hydrochloric acid is, for example,
It is stirred.The concentration of concentrated hydrochloric acid is, for example, 30% to 37%.The amount of concentrated hydrochloric acid is, for example, 0.5 times of the amount of saliferous Glycerol Wastewater
To 1.5 times, the salinity in saliferous Glycerol Wastewater can more effectively be precipitated whereby.
Step S102 is carried out, mixed liquor is filtered, to obtain the salt of acid filtrate and precipitation.For example, may be used
Mixed liquor is filtered by filter device 104, it, whereby can be by salinity from mixing to obtain the salt of acid filtrate and precipitation
It is separated in liquid.
Step S104 is carried out, is supplied water in acid filtrate, with the acid filtrate after being diluted with water.Supplied to acid
The amount of water in property filtrate is, for example, 0.25 times to 1 times of the amount of saliferous Glycerol Wastewater.In this embodiment, acid is supplied water to
Method in property filtrate can supply water in acid filtrate reserve tank 110 (referring to figure 2.).In another embodiment, by water
It can also be supplied water in acid filtrate transfer pipeline 202 (referring to figure 2.) supplied to the method in acid filtrate.In other realities
It applies in example, the method supplied water in acid filtrate can also supply water to the destilling tower to be distilled to acid filtrate
In 106 (referring to figure 3.).
Carry out step S106, the acid filtrate after being diluted with water is distilled, thus isolate aqueous hydrochloric acid solution with it is sweet
Oily waste water.For example, the acid filtrate after being diluted with water can be distilled by destilling tower 106, includes hydrochloric acid to obtain
The overhead product of aqueous solution and the tower bottom product for including Glycerol Wastewater.Whereby, saliferous Glycerol Wastewater processing system 100 can be effectively
HCl recovery is utilized.
Step S108 is optionally carried out, is passed through hydrogen chloride gas, in aqueous hydrochloric acid solution to adjust aqueous hydrochloric acid solution
Concentration, to facilitate recycling for aqueous hydrochloric acid solution.It for example, can be right by hydrogen chloride gas feeding mechanism 118
The aqueous hydrochloric acid solution being stored in overhead product reserve tank 116 is passed through hydrogen chloride gas.
Step S110 is optionally carried out, aqueous hydrochloric acid solution is recycled.It for example, can be by being connected to tower top
Return line 120 between product storage slot 116 and mixing channel 102 makes to adjust the aqueous hydrochloric acid at reflux after concentration to mixing channel
In 102, to recycle again.
Based on the above embodiment it is found that in saliferous Glycerol Wastewater processing method, due to using concentrated hydrochloric acid to saliferous glycerol
Waste water carries out processing of saltouing, therefore the salinity that can be effectively precipitated in saliferous Glycerol Wastewater.Further, since being obtained via filtering
Water is added in the acid filtrate obtained, therefore after being distilled the acid filtrate after being diluted with water, can effectively returned hydrochloric acid
It receives and utilizes.
Experimental example
Example 1: it is saltoutd using concentrated hydrochloric acid saliferous Glycerol Wastewater
Fig. 5 is between the concentrated hydrochloric acid amount of an experimental example of the invention and the ratio and the salt rate of recovery of saliferous Glycerol Wastewater amount
Graph of relation.
Referring to figure 5., 37% concentrated hydrochloric acid stirring and mixing is added in saliferous Glycerol Wastewater, is added about useless with saliferous glycerol
The identical concentrated hydrochloric acid of water can analyze 90% or more salt, and recycling filter device is by the salt and saliferous of precipitation later
Glycerol Wastewater separation, to reach desalination effect.
The numerical value of each operating point in Fig. 5 is as shown in table 1 below.
The numerical value of each operating point in 1 Fig. 5 of table
Example 2: whether there is or not the distillation examples for adding water for acid filtrate (using concentrated hydrochloric acid/wastewater flow rate=1.1 condition)
Whether there is or not the distillate comparison sheets for adding water for 2 acid filtrate of table
| Experiment | Liquid weight (gram) | Distillate (gram) | Hydrochloric acid content (gram) |
| The hydrochloric acid content being initially added | 55 | - | 20.35 |
| Acid filtrate does not add water to distill | 98.3 | 11.89 | 8.95 |
| Acid filtrate adds water to distill | 144.1 | 95.8 | 20.12 |
Table 2 is please referred to, acid filtrate obtained directly recycles hydrochloric acid using distilling apparatus after filtering, can only distill out
A small amount of distillate (11.89 grams) and hydrochloric acid (8.95 grams), recycling is not fully.It reviews, after filtration acid filtrate obtained
In plus (50 grams) of water dilution after distilled again, can be recycled ninety percent or more distillate (95.8 grams) and hydrochloric acid (20.12 grams), and
The aqueous hydrochloric acid solution of recycling, which can be passed through hydrogen chloride gas again and become concentrated hydrochloric acid, carrys out circulate operation.
In conclusion in the saliferous Glycerol Wastewater processing system and method for above-described embodiment, it can be by concentrated hydrochloric acid to containing
Salt Glycerol Wastewater carries out processing of saltouing, so that the salinity in saliferous Glycerol Wastewater effectively be precipitated.In addition, can be by via mistake
It filters and adds water in the acid filtrate of acquisition, then the acid filtrate after being diluted with water is distilled, thus effectively by hydrochloric acid
It recycles.
Although the present invention has been disclosed by way of example above, it is not intended to limit the present invention., any technical field
Technical staff, without departing from the spirit and scope of the present invention, when can make some changes and embellishment, therefore protection of the invention
Range should be subject to the scope defined in the appended claims.
Claims (16)
1. a kind of saliferous Glycerol Wastewater processing system characterized by comprising
Mixing channel, for mixing saliferous Glycerol Wastewater and concentrated hydrochloric acid, to obtain mixed liquor；
Filter device is connected to the mixing channel, and is filtered to the mixed liquor, to obtain acid filtrate and precipitation
Salt；
Destilling tower is connected to the filter device, and receives the acid filtrate from the filter device；And
Waterworks supply water in the acid filtrate.
2. saliferous Glycerol Wastewater processing system according to claim 1, which is characterized in that further include:
Saliferous Glycerol Wastewater feeding mechanism, is connected to the mixing channel；And
Concentrated hydrochloric acid feeding mechanism is connected to the mixing channel.
3. saliferous Glycerol Wastewater processing system according to claim 1, which is characterized in that the concentration of the concentrated hydrochloric acid is
30% to 37%.
4. saliferous Glycerol Wastewater processing system according to claim 1, which is characterized in that the amount of the concentrated hydrochloric acid is described
0.5 times to 1.5 times of the amount of saliferous Glycerol Wastewater.
5. saliferous Glycerol Wastewater processing system according to claim 1, which is characterized in that supplied in the acid filtrate
The amount of the water be 0.25 times to 1 times of amount of the saliferous Glycerol Wastewater.
6. saliferous Glycerol Wastewater processing system according to claim 1, which is characterized in that the waterworks are connected to
The acid filtrate reserve tank between the filter device and the destilling tower is passed through, is connected to and is connected to the filter device and institute
It states the acid filtrate transfer pipeline between destilling tower or is directly connected to the destilling tower.
7. saliferous Glycerol Wastewater processing system according to claim 1, which is characterized in that further include overhead product storage
Slot is connected to the destilling tower, and stores the overhead product of the destilling tower, wherein the overhead product includes that hydrochloric acid is water-soluble
Liquid.
8. saliferous Glycerol Wastewater processing system according to claim 7, which is characterized in that further include hydrogen chloride gas supply
Device is connected to the overhead product reserve tank.
9. saliferous Glycerol Wastewater processing system according to claim 7, which is characterized in that it further include return line, connection
Between the overhead product reserve tank and the mixing channel.
10. a kind of saliferous Glycerol Wastewater processing method characterized by comprising
Concentrated hydrochloric acid is mixed with saliferous Glycerol Wastewater and carries out processing of saltouing, to obtain mixed liquor；
The mixed liquor is filtered, to obtain the salt of acid filtrate and precipitation；
It supplies water in the acid filtrate；
The acid filtrate after being diluted with water is distilled, to isolate aqueous hydrochloric acid solution and Glycerol Wastewater.
11. saliferous Glycerol Wastewater processing method according to claim 10, which is characterized in that the concentration of the concentrated hydrochloric acid is
30% to 37%.
12. saliferous Glycerol Wastewater processing method according to claim 10, which is characterized in that the amount of the concentrated hydrochloric acid is institute
0.5 times to 1.5 times for stating the amount of saliferous Glycerol Wastewater.
13. saliferous Glycerol Wastewater processing method according to claim 10, which is characterized in that be supplied to the acid filtrate
In the amount of the water be 0.25 times to 1 times of amount of the saliferous Glycerol Wastewater.
14. saliferous Glycerol Wastewater processing method according to claim 10, which is characterized in that by the water described in
Method in acid filtrate include by the water supplied in acid filtrate reserve tank, supplied in acid filtrate transfer pipeline or
It is supplied directly into the destilling tower to be distilled to the acid filtrate.
15. saliferous Glycerol Wastewater processing method according to claim 10, which is characterized in that further include in the hydrochloric acid water
Hydrogen chloride gas is passed through in solution.
16. saliferous Glycerol Wastewater processing method according to claim 10, which is characterized in that further include by the hydrochloric acid water
Solution recycles.
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| CN201710523679.6A CN109205896A (en) | 2017-06-30 | 2017-06-30 | System and method for treating salt-containing glycerol wastewater |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102557164A (en) * | 2010-12-15 | 2012-07-11 | 益海天成(连云港)化工有限公司 | Recycling method of high-salt industrial wastewater containing glycerin |
| CN106892798A (en) * | 2015-12-18 | 2017-06-27 | 长春人造树脂厂股份有限公司 | Process for preparing dichloropropanol |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102557164A (en) * | 2010-12-15 | 2012-07-11 | 益海天成(连云港)化工有限公司 | Recycling method of high-salt industrial wastewater containing glycerin |
| CN106892798A (en) * | 2015-12-18 | 2017-06-27 | 长春人造树脂厂股份有限公司 | Process for preparing dichloropropanol |
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