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Brine mining process

A process and brine technology, applied in the field of brine mining technology, can solve problems such as being not cheap and costing tens of millions of dollars

Inactive Publication Date: 2016-07-06
BLUE CUBE IP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Drilling each borehole can cost tens of millions of dollars, and the pumps that can apply the pressure needed to inject the injection fluid and draw out the saturated solution aren't cheap

Method used

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  • Brine mining process
  • Brine mining process
  • Brine mining process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] 351 t / h of feed stream comprising seawater with a salt concentration of 3.5% and 117 t / h of draw solution comprising 25% NaCl are supplied to 976 2 ) forward osmosis membrane (3.2m 2 Area, model FO_CTA, product 4040MS, purchased from HTI TM , AlbanyOR) single forward osmosis unit.

[0111] The outgoing feed stream 206 contains 4.1 NaCl with a flow rate of 301 t / h; while the outgoing draw stream 214 contains 17.5 NaCl with a flow rate of 167 t / h. This outgoing draw stream is then reintroduced into the brine mine for reconcentration to 25% NaCl, thus saving cost by not requiring purchased salt or evaporation to reconcentrate the draw stream.

[0112] Other streams that cannot be accommodated by the existing mine structure are stored, used in other processes or disposed of appropriately. Alternatively, an additional bore is provided to accommodate the flow. In this case, about 50t / h of fresh water was drawn from the forward osmosis unit to provide 67t / h of brine with 2...

Embodiment 2

[0114] A feed stream containing 3.5% by weight NaCl and a draw stream containing 25% by weight NaCl were fed in series in counter-current fashion to a total of 1438 forward osmosis membranes (model FO_CTA; product 4040MS; HTI TM , Albany, Oregon) five forward osmosis units. The flow velocity and the salt concentration of the feed stream at each forward osmosis unit place and the draw stream and the number of used forward osmosis membranes in each forward osmosis unit are shown in Table 1 below, wherein reference image 3 Identify forward osmosis units. In this embodiment, the flow rate of the membrane is changed from 16 l / (h*m in unit 302 2 ) is reduced to 14l / (h*m in unit 312 2 ), to 12l / (h*m in unit 322 2 ), to 10l / (h*m in unit 332 2 ), to 8l / (h*m in unit 342 2 ), which is caused by the decrease of the salt concentration difference on both sides of the membrane. The outgoing draw stream is directed to the brine mine for reconcentration.

[0115] Table 1

[0116]

...

Embodiment 3

[0119] A feed stream containing 3.5% by weight NaCl was fed in parallel and a draw stream containing 25% by weight NaCl was fed in series to a total of 1415 forward osmosis membranes (model FO_CTA; product 4040MS; HTI TM , Albany, Oregon) five forward osmosis units. The flow rate and the salt concentration of the feed stream at each forward osmosis unit and the draw stream and the number of used forward osmosis membranes in each forward osmosis unit are shown in Table 2 below, where reference Figure 4 Identify forward osmosis units. In this embodiment, the flow rate of the membrane is changed from 17l / (h*m in unit 402 2 ) is reduced to 15 l / (h*m in unit 412 2 ), to 12l / (h*m in unit 422 2 ), to 10l / (h*m in unit 432 2 ), to 8l / (h*m in unit 442 2 ), which is caused by the decrease of the salt concentration difference on both sides of the membrane. The outgoing draw stream is directed to the brine mine for reconcentration.

[0120] Table 2

[0121]

[0122]

[0123]...

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PUM

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Abstract

The present invention relates to a brine mining process. The process incorporates a forward osmosis step wherein at least a portion of at least one process stream is provided to at least one forward osmosis unit. The process thus allows for the use of multiple sources, and qualities, of water, which, in turn, can reduce the reliance on natural water sources. Longevity of the mining, and any downstream, process equipment may be enhanced. At least a portion of the production stream may also be fed to a downstream process, such as a chlor-alkali process.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 61 / 893,040, filed October 18, 2013. technical field [0003] The invention relates to a brine mining process incorporating forward osmosis. Background technique [0004] For larger producers, producing ingredients themselves may be a more economical option than purchasing them from suppliers. For example, manufacturers of chlorine-containing chemicals use large amounts of chlorine in the manufacture of their products. Producing this material in-house not only saves costs, but also minimizes or eliminates problems that may arise from transporting this material. [0005] Chlorine can generally be produced by electrolysis of a solution containing a large amount of chlorine in water, such as an aqueous sodium chloride solution. In some cases, manufacturers who want to produce their own chlorine can purchase sodium chloride, use it to create a solution...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B15/08B01D61/00C02F1/44C25B1/34C01D3/14C25B9/19
CPCC01D3/14C25B15/08C25B1/34C02F2103/10C02F2301/08B01D2317/02C01F5/22C01F11/18C02F1/445C25B1/26C25B1/36C25B1/46C25B9/19B01D61/0021C02F2103/08B01D61/005B01D61/58B01D71/16B01D2317/04C01D3/06C02F1/283C02F1/42C02F1/441C02F1/4604C02F1/4674C02F9/00C02F2101/10C02F2101/12C02F2101/30C02F2201/46115C02F2303/22
Inventor K·加尔巴德A·V·森克维奇M·M·蒂尔托维乔乔
Owner BLUE CUBE IP
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