CN1974417A - Sea water desalting agent for desalting sea water - Google Patents

Sea water desalting agent for desalting sea water Download PDF

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Publication number
CN1974417A
CN1974417A CN 200610130377 CN200610130377A CN1974417A CN 1974417 A CN1974417 A CN 1974417A CN 200610130377 CN200610130377 CN 200610130377 CN 200610130377 A CN200610130377 A CN 200610130377A CN 1974417 A CN1974417 A CN 1974417A
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CN
China
Prior art keywords
sea water
desalting
agent
silver
desalting agent
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CN 200610130377
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Chinese (zh)
Inventor
张雨山
黄庆华
曾兴宇
王静
杨雪
姜天翔
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Tianjin Institute of Seawater Desalination and Multipurpose Utilization SOA
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Tianjin Institute of Seawater Desalination and Multipurpose Utilization SOA
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Priority to CN 200610130377 priority Critical patent/CN1974417A/en
Publication of CN1974417A publication Critical patent/CN1974417A/en
Pending legal-status Critical Current

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  • Water Treatment By Sorption (AREA)

Abstract

The present invention relates to sea water desalting agent, and belongs to the field of sea water desalting technology. The sea water desalting agent consists of silver-carrying acid zeolite, silver oxide and barium hydroxide. During desalting sea water with the sea water desalting agent, the silver-carrying acid zeolite can eliminate chlorine ion, sodium ion, calcium ion and magnesium ion from sea water and neutralize hydroxyl ion the reaction between silver oxide and barium hydroxide produces to lower the effluent pH value. The sea water desalting process needs no addition of strong acid cationic exchange resin and reduced sea water desalting consumption. The sea water desalting agent has facile material, high desalting efficiency, high effluent quality and other advantages.

Description

Sea water desalting agent for desalting sea water
Technical field
The invention belongs to field of sea water desalting technology, especially relate to a kind of sea water desalting agent for desalting sea water.
Background technology
The seawater bitterness can not directly be drunk.The seawater salinity accounts for 78% based on sodium-chlor, and all the other 22% are magnesium chloride, sal epsom, Repone K etc.The blood of human body salinity is 0.9%, and sea water salinity is up to its 4 times.If directly drink seawater, cause the interior salinity of body too much, unnecessary salinity is discharged with the form of urine by the kidney organ, just might cause dehydration dead.Therefore, must carry sea water desalting agent in liferaft or the jump wear and desalinize seawater, to keep the skin wet.
At present, existing sea water desalting agent is made by zeolite with carrying silver, silver suboxide, hydrated barta, strongly acidic cation-exchange, activated carbon etc. usually as the chemical agent that desalinizes seawater.Every sea water desalting agent weighs 65~70g, by ion-exchange and chemical precipitation mode, can significantly reduce sodium in 500 milliliters of seawater, calcium, magnesium, chlorine, the isoionic content of sulfate radical, makes sea water desaltination.Yet, influence effluent quality because the effect of silver suboxide and hydrated barta makes that the seawater pH value after the desalination raises.U.S. Pat 2,322 once proposed in 689 to generate soluble Trisodium Citrate with in the citric acid and excessive hydroxide ion, but the pharmacology test shows this might cause alkalosis and physiology dehydration.U.S. Pat 2,363 adopts in 020 uric acid to reduce the pH value of water outlet, generates insoluble uric acid sodium, still it is found that this can increase the difficulty in filtration of water outlet, and can influence the mouthfeel of water.At present, people are by the usage quantity of controlled oxidation silver and hydrated barta, and add strongly acidic cation-exchange, make the pH value of water outlet in 8.9~10.5 scopes, have still increased the volume of medicament, have reduced service efficiency.Therefore research and develop the highly effective sea-water desalting agent, improve effluent quality, dwindling bolus volume is the important topic in sea water desaltination field.
Summary of the invention
Problem solved by the invention is to overcome the problem that aforementioned techniques exists, and a kind of sea water desalting agent for desalting sea water is provided.
Sea water desalting agent for desalting sea water main ingredient of the present invention is acid zeolite with carrying silver, when carrying out sea water desaltination, can remove chlorion and sodium ion in the seawater effectively, again can in and the hydroxide ion that produced of silver suboxide and hydrated barta, reduce the pH value of water outlet, simultaneously need not add strongly acidic cation-exchange, dwindle the volume of medicament, be easy to carry more.
Sea water desalting agent for desalting sea water of the present invention adopts following technical scheme to realize:
Sea water desalting agent for desalting sea water, its composition comprises silver carrying acid zeolite, silver suboxide and hydrated barta.
Sea water desalting agent for desalting sea water of the present invention can also adopt following technical measures further to realize:
Described sea water desalting agent for desalting sea water, silver carrying acid zeolite was 75~92% during its sea water desalting agent weight percent was formed, and silver suboxide is 2~9%, and hydrated barta is 4~7%.The main effect of acid zeolite with carrying silver is chlorion, sodium ion, calcium ion and the magnesium ion of removing in the seawater, the hydroxide ion that is produced with silver suboxide and hydrated barta in the while.The main effect of silver suboxide is the chlorion of removing in the seawater.The main effect of hydrated barta is the sulfate ion of removing in the seawater.
Described sea water desalting agent for desalting sea water, this sea water desalting agent contains montmorillonite.The main effect of montmorillonite is as disintegrating agent, makes the division rapidly in seawater of block desalting agent the time of shortening sea water desaltination, to improve processing efficiency.
Described sea water desalting agent for desalting sea water, the montmorillonite weight percent consists of 0.5~4% in this sea water desalting agent.
Described sea water desalting agent for desalting sea water, this sea water desalting agent contains stearic acid.Stearic main effect is as forming agent, makes pulverous mixture be easy to moulding more under certain pressure.
Described sea water desalting agent for desalting sea water, the stearic acid weight percent consists of 0.5-4% in this sea water desalting agent.
Described sea water desalting agent for desalting sea water, this sea water desalting agent contains gac.The main effect of gac is the organism in the adsorbing seawater, removes peculiar smell, improves effluent quality.
Described sea water desalting agent for desalting sea water, the gac weight percent consists of 0.3~4% in this sea water desalting agent.
Described sea water desalting agent for desalting sea water, this sea water desalting agent silver carrying acid zeolite is made by using natural clinoptilolite or natural mordenite zeolite.
Described sea water desalting agent for desalting sea water, this sea water desalting agent silver carrying acid zeolite is made by synthetic A type zeolite, X type zeolite, y-type zeolite or ZSM-5 type zeolite.
Sea water desalting agent for desalting sea water of the present invention adopts pickling process to be prepared, and its preparation process is:
(1) preparation acid zeolite
Zeolite be impregnated in acid solution or ammonium salt solution, under 25~80 ℃ of temperature, carry out ion-exchange, wash then, filter, oven dry;
(2) prepare acid zeolite with carrying silver
Under the lucifuge condition, acid zeolite be impregnated in silver ion solution, under 60~120 ℃ of temperature, carry out ion-exchange, wash then, filter oven dry;
(3) be mixed with desalting agent
Under the lucifuge condition, acid zeolite with carrying silver, silver suboxide and hydrated barta are mixed, make desalting agent based on acid zeolite with carrying silver.
The preparation method of sea water desalting agent for desalting sea water of the present invention, can also adopt following technical measures further to realize:
Described sea water desalting agent preparation method, its technological process comprises:
(1) preparation acid zeolite
Zeolite is placed in the container, vacuumize 1~20kPa, add acid solution or ammonium salt solution dipping then;
(2) the acid zeolite dipping carries silver
Acid zeolite is placed in the container, vacuumize 1~20kPa, add the silver ion solution dipping then.
This preparation method adopts unique vacuumizing method, vacuumize air and the moisture extracted out in the zeolite cavity earlier, flood then, can improve the impregnation iron exchange rate of acid solution or ammonium salt solution largely, can improve the silver carrying amount of zeolite largely.Silver carrying amount of the present invention can be up to 22%.
Described sea water desalting agent preparation method, its technological process comprises:
(1) preparation acid zeolite
Acid solution or ammonium salt solution are HNO 3, HCl, HAC, NH 4Cl, NH 4NO 3, NH 4One or more mixtures among the AC, concentration are 0.1~1.0mol/L; It is 1~5 hour that acid solution or ammonium salt solution dipping carry out ion-exchange time, exchanges 1~4 time, 50~350 ℃ of oven dry down;
(2) the acid zeolite dipping carries silver
Silver ion solution is Silver Nitrate or Silver monoacetate solution, and concentration is 0.1~1.0mol/L; Silver ion solution is immersed in and carries out ion-exchange 2~8 hours under the agitation condition, 50~120 ℃ of oven dry down;
(3) be mixed with desalting agent
Add montmorillonite, acid zeolite with carrying silver, silver suboxide, hydrated barta and montmorillonite are mixed.
Described sea water desalting agent preparation method, its technological process comprises: the zeolite of preparation acid zeolite is natural clinoptilolite, mordenite or synthetic A type zeolite, X type zeolite, y-type zeolite, ZSM-5 type zeolite.
Described sea water desalting agent preparation method, its technological process comprises: during the preparation acid zeolite, ion exchanged soln and zeolite solvent and solute weight ratio are 10~20; When the acid zeolite dipping carried silver, silver ion solution and acid zeolite solvent and solute weight ratio were 5~10, and the acid zeolite particle diameter is 75~150 μ m.
Described sea water desalting agent preparation method, its technological process comprises: desalting agent adds montmorillonite, stearic acid, activated carbon, weight percent consists of acid zeolite with carrying silver 75~92%, silver suboxide 2~9%, hydrated barta 4~7%, montmorillonite 0.5~4%, stearic acid 0.5~4%, activated carbon 0.3~4%, and it is mixed.
Advantage that the present invention has and positively effect:
The present invention compared with prior art owing to adopt acid zeolite with carrying silver as main ingredient, is mixed with silver suboxide, hydrated barta, montmorillonite, stearic acid and activated carbon, thereby has had following significant advantage and beneficial effect:
Sea water desalting agent is when carrying out sea water desaltination, acid zeolite with carrying silver can be in chlorion, sodium ion, calcium ion and magnesium ion in removing seawater, again can in and the hydroxide ion that produced of silver suboxide and hydrated barta, reduce the pH value of water outlet, simultaneously need not add strongly acidic cation-exchange, dwindled the volume of medicament, be easy to carry more.Sea water desalting agent is easy to moulding, can divide rapidly in seawater, and the sea water desaltination time is short, the processing efficiency height, and the organism in the active adsorption seawater is removed peculiar smell, has improved effluent quality greatly.
Advantages such as the present invention has simple, the raw materials used wide material sources of preparation technology, is easy to industrialization, sea water desalting agent processing efficiency height, sea water desalinization is effective, effluent quality is high, volume is little, be easy to carry.
Embodiment
Below in conjunction with preferred embodiment,, be described in detail as follows foundation the specific embodiment of the present invention, summary of the invention, feature and effect thereof:
Embodiment 1
Carry the sea water desaltination desalting agent of filamentary silver geolyte based on acidity, it consists of: acid filamentary silver geolyte 56g, silver suboxide 2g, hydrated barta 4g, montmorillonite 0.5g, stearic acid 0.6g, the gac 0.2g of carrying.
Embodiment 2
Carry the sea water desaltination desalting agent of silver-colored 4A zeolite based on acidity, it consists of: acid silver-colored 4A zeolite 52g, silver suboxide 5g, hydrated barta 3g, montmorillonite 0.4g, stearic acid 0.6g, the gac 0.3g of carrying.
Embodiment 3
Embodiment 1 carries the preparation process of the sea water desaltination of filamentary silver geolyte with desalting agent based on acidity:
The preparation acid zeolite: the 70g mordenite is placed closed container, and being evacuated to vacuum tightness is 2kPa, adds the NH of 1000ml 0.1mol/L then 4NO 3Solution stirs exchange 4h at 80 ℃, filter, with distilled water wash up to not containing NO - 3, so repeated exchanged is three times, and powder is dried 12h down at 120 ℃, again at 300 ℃ of following roasting 6h, promptly gets acidic mordenites.
The acid zeolite dipping carries silver: acidic mordenites is placed closed container, and being evacuated to vacuum tightness is 1kPa, adds the AgNO of 500ml 0.3mol/L then 3Solution after fully mixing, stirs exchange 3h at 80 ℃, filter, with distilled water wash up to not containing Ag +, so the repeated exchanged secondary is dried 16h down at 60 ℃ then, promptly gets acid year filamentary silver geolyte.
Be mixed with desalting agent: acidity is carried filamentary silver geolyte 56g, silver suboxide 2g, hydrated barta 4g, montmorillonite 0.5g, stearic acid 0.6g after gac 0.2g mixes, is hot pressed into bulk under 80 ℃, 20MPa pressure, be prepared into sea water desalting agent.
Embodiment 4
Embodiment 2 carries the preparation process of the sea water desaltination of silver-colored 4A zeolite with desalting agent based on acidity:
The preparation acid zeolite: 100g 4A zeolite is placed closed container, and being evacuated to vacuum tightness is 5kPa, adds the HNO of 1000ml 0.3mol/L then 3Solution stirs exchange 2h at 60 ℃, filter, with distilled water wash up to not containing NO 3 -, so repeated exchanged is three times, and powder is dried 12h down at 60 ℃, promptly gets acid 4A zeolite.
The acid zeolite dipping carries silver: acid 4A zeolite is placed closed container, and being evacuated to vacuum tightness is 1kPa, adds the AgNO of 500ml 0.3mol/L then 3Solution after fully mixing, stirs exchange 6h at 60 ℃, filter, with distilled water wash up to not containing Ag +, so the repeated exchanged secondary is dried 16h down at 60 ℃ then, promptly gets acid year silver-colored 4A zeolite.
Be mixed with desalting agent: acidity is carried silver-colored 4A zeolite 52g, silver suboxide 5g, hydrated barta 3g, montmorillonite 0.4g, stearic acid 0.6g after gac 0.3g mixes, is hot pressed into bulk under 80 ℃, 20MPa pressure, be prepared into sea water desalting agent.
Embodiment 5
Embodiment 1 and embodiment 2 desalting agent desalting effects compare:
Respectively an embodiment 1 and embodiment 2 sea water desalting agents are put into the drainage bag of sea water desaltination special use, add 500ml artificial seawater (see Table 1 concrete the composition) then, jolting is after 20 minutes continuously, extruding drainage bag, the seawater that obtains desalinating, its effluent quality is as shown in table 2, and the sea water desalting agent that is prepared into based on acid zeolite with carrying silver with proof has good sea water desaltination effect.
Table 1 artificial seawater prescription is mainly formed
Salt Gram/kilogram Salt Gram/kilogram
NaCl 23.476 Na 2SO 4 3.917
SrCl 2 0.024 NaNO 3 0.050
MgCl 2 4.981 CaCl 2 1.102
NaF 0.003 KCl 0.664
NaHCO 3 0.192 KBr 0.096
The desalinize seawater comparison of water quality of table 2 sea water desalting agent
Sea water desalting agent Volume cm 3 Weight g Water outlet ml pH Electricity is led μ S/cm Cl - mg/L SO 4 - mg/L Ca 2+ mg/L Mg 2+ mg/L
Embodiment 1 30.5 63.3 438 7.9 1250 106 420 30 50
Embodiment 2 28.2 61.3 440 8.1 1008 82 370 35 52
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.

Claims (10)

1. sea water desalting agent for desalting sea water is characterized in that: sea water desalting agent is formed and is comprised silver carrying acid zeolite, silver suboxide and hydrated barta.
2. sea water desalting agent for desalting sea water according to claim 1 is characterized in that: silver carrying acid zeolite was 75-92% during the sea water desalting agent weight percent was formed, and silver suboxide is 2-9%, and hydrated barta is 4-7%.
3. sea water desalting agent for desalting sea water according to claim 1 and 2, it is characterized in that: sea water desalting agent contains montmorillonite.
4. sea water desalting agent for desalting sea water according to claim 3 is characterized in that: the montmorillonite weight percent consists of 0.5-4% in the sea water desalting agent.
5. sea water desalting agent for desalting sea water according to claim 1 and 2, it is characterized in that: sea water desalting agent contains stearic acid.
6. sea water desalting agent for desalting sea water according to claim 5 is characterized in that: the stearic acid weight percent consists of 0.5-4% in the sea water desalting agent.
7. sea water desalting agent for desalting sea water according to claim 1 and 2, it is characterized in that: sea water desalting agent contains gac.
8. sea water desalting agent for desalting sea water according to claim 7 is characterized in that: the gac weight percent consists of 0.3-4% in the sea water desalting agent.
9. sea water desalting agent for desalting sea water according to claim 1 and 2 is characterized in that: silver carrying acid zeolite is made by using natural clinoptilolite or natural mordenite zeolite.
10. sea water desalting agent for desalting sea water according to claim 1 and 2 is characterized in that: silver carrying acid zeolite is made by synthetic A type zeolite, X type zeolite, y-type zeolite or ZSM-5 type zeolite.
CN 200610130377 2006-12-19 2006-12-19 Sea water desalting agent for desalting sea water Pending CN1974417A (en)

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Application Number Priority Date Filing Date Title
CN 200610130377 CN1974417A (en) 2006-12-19 2006-12-19 Sea water desalting agent for desalting sea water

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101439896B (en) * 2007-11-23 2010-10-20 王永江 Method for preliminarily purifying seawater
CN101941746A (en) * 2010-08-23 2011-01-12 应清界 Method for desalinating seawater by using liquid resin
CN106395968A (en) * 2016-11-08 2017-02-15 江苏润海能源科技有限公司 Seawater desalination seawater desalting agent

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101439896B (en) * 2007-11-23 2010-10-20 王永江 Method for preliminarily purifying seawater
CN101941746A (en) * 2010-08-23 2011-01-12 应清界 Method for desalinating seawater by using liquid resin
CN106395968A (en) * 2016-11-08 2017-02-15 江苏润海能源科技有限公司 Seawater desalination seawater desalting agent

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Open date: 20070606