CN202569965U - Dilute sulfuric acid membrane distillation concentrator - Google Patents
Dilute sulfuric acid membrane distillation concentrator Download PDFInfo
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- CN202569965U CN202569965U CN 201220227063 CN201220227063U CN202569965U CN 202569965 U CN202569965 U CN 202569965U CN 201220227063 CN201220227063 CN 201220227063 CN 201220227063 U CN201220227063 U CN 201220227063U CN 202569965 U CN202569965 U CN 202569965U
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- sulfuric acid
- dilute sulfuric
- membrane distillation
- hollow fiber
- concentrator
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Abstract
The utility model discloses a dilute sulfuric acid membrane distillation concentrator which comprises a direct contact membrane distillation device, wherein a hollow fiber membrane distillation component is installed in the direct contact membrane distillation device; and a hollow fiber membrane is installed in the hollow fiber membrane distillation component. The utility model is characterized in that the hollow fiber membrane is a hydrophobic polyvinylidene fluoride hollow fiber membrane with liner fibers. In conclusion, by concentrating the dilute sulfuric acid with the dilute sulfuric acid membrane distillation concentrator and concentration method disclosed by the utility model, the technical scheme has the following advantages: the hydrophobic polyvinylidene fluoride hollow fiber membrane with liner fibers for dilute sulfuric acid membrane distillation has the advantages of high flux, favorable separating effect, no fiber breaking and the like; the concentrator saves the energy, and constant-temperature heating can adopt industrial exhaust heat, vapor heating and the like; and the operation is performed under the conditions of atmospheric pressure and low temperature, and thus, the concentrator has the advantages of low loss of effective constituents and high concentration multiple, and is beneficial to chemical stabilization of thermo-sensitive substances.
Description
Technical field
The utility model relates to the membrane separation technique field, particularly a kind of dilute sulfuric acid film distillation enrichment facility.
Background technology
Sulfuric acid is of many uses in industries such as chemical industry, iron and steel.But in the major applications process, the sulfuric acid of using becomes impure dilute sulfuric acid.These dilute sulfuric acids will cause water body or soil acidification as just being discharged in the environment without handling, and the harm ecological environment is wasted resource in a large number.Past is normal adopts and produces gypsum or produce modes such as phosphate fertilizer and handled dilute sulfuric acid, but along with the needs of development and the environmental protection of chemical industry, this processing mode can't satisfy the demands, therefore need be concentrated with dilute sulfuric acid after, recycling.
At present, dilute sulphuric acid concentration method mainly contains two kinds, and a kind of is to place evaporimeter to dilute sulfuric acid, under condition of normal pressure, directly heats with the fuel heating fumigators or with heat exchanger, reaches the purpose that dilute sulfuric acid concentrates; A kind of in addition is under reduced pressure, heats the method and apparatus that dilute sulfuric acid evaporates simultaneously with heat exchanger.In a word, at present concentrating of dilute sulfuric acid all is that method through indirect realizes.Because the sulfuric acid of the high temperature particularly concentrated sulfuric acid of high temperature has strong corrosivity; The material of this heat exchanging device has proposed high requirement, needs expensive rare metal such as tantalum, zirconium and specific alloy to make heat exchanger, adopts evaporation and concentration to need the energy of labor in addition; This concentrated cost that has all improved dilute sulfuric acid; Thereby limited the recycling of useless dilute sulfuric acid, washed in addition and often contain other impurity in the sulfuric acid, at high temperature influenced the reuse after concentrating easily.
The film distillation is the film separation process that membrane separation technique combines with still-process; Be the newcomer in the membrane separation technique big family; It adopts hydrophobic microporous barrier, and the temperature difference that exists with the film both sides and the water vapor pressure difference that causes realize concentrating of solution as mass transfer force.Film distillation has the separative efficiency height, to advantages such as the mechanical performance requirement of film and material liquid interphase interaction and film are low; And in normal pressure and the following operation of lower temperature; Have that loss of effective components is few, cycles of concentration is high, energy-conservation advantages such as (can use industrial waste heat); Be particularly suitable for concentrating of solution, concentrating the field at Chinese medicine extract has good prospects for application.
Summary of the invention
To the problems referred to above, the purpose of the utility model is to shortcoming such as traditional distillation technique energy consumption height, based on film distillation technology, provides that a kind of evaporating temperature is low, energy consumption is low, corrosion-resistant, dilute sulfuric acid film distillation enrichment facility that concentrated effect is good.
For achieving the above object; The technical scheme that the utility model proposed is: a kind of dilute sulfuric acid film distillation enrichment facility; Comprise direct contact membranes distilling apparatus (DCMD); Hollow-fibre membrane distillation assembly is installed in the described direct contact membranes distilling apparatus, in the described hollow-fibre membrane film distillation assembly hollow-fibre membrane is installed, it is characterized in that: described hollow-fibre membrane is the hydrophobicity Kynoar hollow-fibre membrane of liner fiber.
Further, described doughnut membrane aperture is the 0.05-0.4 micron.
Adopt the dilute sulfuric acid film distillation method for concentration of said apparatus, adopt above-mentioned dilute sulfuric acid film distillation enrichment facility, comprise the steps:
Step 1: the dilute sulfuric acid heated at constant temperature in the head tank is to 50-80 ℃;
Step 2: dilute sulfuric acid is pumped via pipes into hollow fiber film assembly through the sulfuric acid pump to carry out film distillation and concentrates; The dilute sulfuric acid concentrate is back to head tank and circulates concentrated; Obtain the concentrated sulfuric acid; The hydrophobicity Kynoar hollow-fibre membrane that steam sees through the liner fiber gets into the dialysis side, and becomes to produce water with the condensed water condensation by contact.
Further, described dilute sulfuric acid concentration is concentration 5-30%.
Further, described condensate temperature is 0-25 ℃.
Further, the concentrated sulfuric acid concentration after described the concentrating is 40-70%.
In sum, adopt technique scheme, adopt the described dilute sulfuric acid film distillation of the utility model enrichment facility to carry out dilute sulfuric acid and concentrate, have the following advantages:
1) the hydrophobicity Kynoar hollow-fibre membrane of liner fiber carries out dilute sulfuric acid film distillation to have a flux big, good separating effect, advantage such as fracture of wire not;
2) energy-conservation, heated at constant temperature can adopt industrial exhaust heat, steam heating etc.;
3) in normal pressure and the following operation of lower temperature, it is few to have loss of effective components, and the feed liquid chemical property is stable;
4) cycles of concentration is high.
Description of drawings
Fig. 1 is the described dilute sulfuric acid film distillation of a utility model enrichment facility structure chart;
Wherein: 1. head tank, 2. constent temperature heater, 3. the sulfuric acid pump, 4. flowmeter, 5. hollow-fibre membrane distillation assembly, 6. the constant temperature cooler, 7. water pump, 8. balance, 9. go out water pot.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment, the utility model is further specified.
As shown in Figure 1; A kind of dilute sulfuric acid film distillation enrichment facility; Comprise direct contact membranes distilling apparatus (DCMD); Hollow-fibre membrane distillation assembly 5 is installed in the described direct contact membranes distilling apparatus, in the described hollow-fibre membrane distillation assembly 5 hollow-fibre membrane is installed, head tank 1, sulfuric acid pump 3, flowmeter 4 link to each other through pipeline hollow-fibre membrane distillation assembly 5 charging apertures; Hollow-fibre membrane distillation assembly 5 concentrated solution outlets link to each other with head tank 1 through pipeline, on the described head tank 1 constent temperature heater 2 are installed; Hollow-fibre membrane interior conduit in the hollow-fibre membrane distillation assembly 5 links to each other in the outlet of hollow-fibre membrane distillation assembly 5 penetrating fluids; And one the outlet through pipeline and flowmeter 4, constant temperature cooler 6, water pump 7, go out water pot 9; Another outlet through pipeline with go out water pot 9 and link to each other; Describedly go out water pot 9 and be located on the balance 8, described hollow-fibre membrane is the hydrophobicity Kynoar hollow-fibre membrane of liner fiber, and described doughnut membrane aperture is the 0.05-0.4 micron.
Adopt the dilute sulfuric acid film distillation method for concentration of technique scheme, adopt above-mentioned dilute sulfuric acid film distillation enrichment facility, comprise the steps:
Step 1: the dilute sulfuric acid heated at constant temperature in the head tank is to 50-80 ℃;
Step 2: dilute sulfuric acid is pumped via pipes into hollow fiber film assembly through the sulfuric acid pump to carry out film distillation and concentrates; The dilute sulfuric acid concentrate is back to head tank and circulates concentrated; Obtain the concentrated sulfuric acid; The hydrophobicity Kynoar hollow-fibre membrane that steam sees through the liner fiber gets into the dialysis side, and is condensed into product water with condensed water.Embodiment after the dilute sulfuric acid of employing variable concentrations concentrates is as shown in the table:
Although specifically show and introduced the utility model in conjunction with preferred embodiment; But the those skilled in the art should be understood that; In the spirit and scope of the utility model that does not break away from appended claims and limited; In form with on the details the utility model is made various variations, be the protection domain of the utility model.
Claims (2)
1. a dilute sulfuric acid film distills enrichment facility; Comprise direct contact membranes distilling apparatus; Hollow-fibre membrane distillation assembly is installed in the described direct contact membranes distilling apparatus; In the described hollow-fibre membrane film distillation assembly hollow-fibre membrane is installed, it is characterized in that: described hollow-fibre membrane is the hydrophobicity Kynoar hollow-fibre membrane of liner fiber.
2. a kind of dilute sulfuric acid film distillation enrichment facility according to claim 1, it is characterized in that: described doughnut membrane aperture is the 0.05-0.4 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220227063 CN202569965U (en) | 2012-05-18 | 2012-05-18 | Dilute sulfuric acid membrane distillation concentrator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220227063 CN202569965U (en) | 2012-05-18 | 2012-05-18 | Dilute sulfuric acid membrane distillation concentrator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688706A (en) * | 2012-05-18 | 2012-09-26 | 厦门鲲扬膜科技有限公司 | Dilute sulfuric acid membrane distillation and concentration device and concentration method |
| CN104415665A (en) * | 2013-08-20 | 2015-03-18 | 中国石油化工股份有限公司 | Internal-pressure-type gas-dissolving vacuum membrane distillation concentration method of ethylene glycol solution |
| CN104415664A (en) * | 2013-08-20 | 2015-03-18 | 中国石油化工股份有限公司 | Internal-pressure-type vacuum membrane distillation concentration method of ethylene glycol solution |
-
2012
- 2012-05-18 CN CN 201220227063 patent/CN202569965U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688706A (en) * | 2012-05-18 | 2012-09-26 | 厦门鲲扬膜科技有限公司 | Dilute sulfuric acid membrane distillation and concentration device and concentration method |
| CN104415665A (en) * | 2013-08-20 | 2015-03-18 | 中国石油化工股份有限公司 | Internal-pressure-type gas-dissolving vacuum membrane distillation concentration method of ethylene glycol solution |
| CN104415664A (en) * | 2013-08-20 | 2015-03-18 | 中国石油化工股份有限公司 | Internal-pressure-type vacuum membrane distillation concentration method of ethylene glycol solution |
| CN104415665B (en) * | 2013-08-20 | 2017-02-15 | 中国石油化工股份有限公司 | Internal-pressure-type gas-dissolving vacuum membrane distillation concentration method of ethylene glycol solution |
| CN104415664B (en) * | 2013-08-20 | 2017-07-28 | 中国石油化工股份有限公司 | The inner pressed vacuum membrane distillation method for concentration of ethylene glycol solution |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20130518 |