# US 10,245,527 B2 · Solid-liquid separation device

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- Number: US 10,245,527 B2
- Document ID: US10245527B2
- Status: Granted
- Kind: B2
- Application number: 15/546,904
- Filed: 2015-01-28
- Published: 2018-02-01
- Granted: 2019-04-02
- Earliest claimed: 2015-01-28
- Assignees: Hitachi, Ltd.
- Applicants: Hitachi, Ltd.
- Inventors: Tadashi Sano; Hiroshi Kusumoto; Michiharu Watanabe; Mitsuhiro Matsuzawa
- Web page: https://patentgrep.com/patent/US10245527B2

## CPC

- B01D 15/203: {Equilibration or regeneration}
- B01D 11/02: of solids
- B01D 11/0296: {Condensation of solvent vapours (condensation in general B01D5/00)}
- B01D 12/00: Displacing liquid, e.g. from wet solids or from dispersions of liquids or from solids in liquids, by means of another liquid
- B01J 20/20: comprising free carbon; comprising carbon obtained by carbonising processes
- B01J 20/3416: {of sorbents or filter aids comprising free carbon, e.g. activated carbon}
- B01J 20/3458: {in the gas phase}
- B09C 1/02: Extraction using liquids, e.g. washing, leaching {, flotation}
- B09C 1/06: thermally
- B09C 1/08: chemically
- C01B 32/30: Active carbon
- C02F 1/02: by heating (methods of steam generation F22B; preheating boiler feed-water or accumulating preheated boiler feed-water F22D)
- C02F 1/26: by extraction
- C02F 1/283: {using coal, charred products, or inorganic mixtures containing them}
- C11B 1/10: by extracting
- F25B 1/00: Compression machines, plants or systems with non-reversible cycle (F25B3/00, F25B5/00, F25B6/00, F25B7/00, F25B9/00 take precedence)
- C02F 2303/16: Regeneration of sorbents, filters
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B09C: RECLAMATION OF CONTAMINATED SOIL (gatherers for removing stone or the like from the soil A01B43/00; sterilising soil by steam A01G11/00; removing undesirable matter, e.g. rubbish, from the land E01H15/00)
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes)
- C11B: PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES (drying-oils C09F)
- F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS

## Abstract

A solid-liquid separation device performs dehydration/deoiling from a mixture of water and/or oil and a solid. Substance A is capable of dissolving water and oil. The device includes substance B circulated while generating phase change in a closed system; a compressor; a first heat exchanger exchanging condensation heat of substance B and evaporation heat of substance A; a second heat exchanger exchanging evaporation heat of substance B and condensation heat of substance A; and a treatment tank for mixing substance A with an object to be treated; substance A having been evaporated while separated from the water or the oil in the first heat exchanger, and condensed in the second heat exchanger. The first heat exchanger is lower than the treatment tank in a vertical direction, and a connection port of the first heat exchanger and a lower portion of the treatment tank are connected with a flow path.

## Claims

### Claim 1

A solid-liquid separation device that performs dehydration or deoiling from an object to be treated that is a mixture of water and a solid, a mixture of oil and a solid, or a mixture of water, oil, and a solid, as the object to be treated, using a substance A capable of dissolving water and oil, the solid-liquid separation device comprising:
a substance B that is circulated while generating phase change in a closed system;
a compressor that compresses the substance B;
a first heat exchanger that exchanges heat of condensation of the substance B and heat of evaporation of the substance A;
a second heat exchanger that exchanges heat of evaporation of the substance B and heat of condensation of the substance A;
a treatment tank in which the substance A is mixed with the object to be treated, the substance A having been evaporated while separated from the water or the oil in the first heat exchanger, and condensed in the second heat exchanger, wherein
the first heat exchanger is installed in a lower portion than the treatment tank in a vertical direction, and
a connection port of the first heat exchanger and a lower portion of the treatment tank are connected with a flow path; and
a third heat exchanger installed downstream of the treatment tank and upstream of the first heat exchanger in a flow path system of the substance A, and which switches a flow path of the substance B flowing into the heat exchanger 1 in an upper stream of the heat exchanger 1 to exchange heat between the substance B and the substance A, wherein
the third heat exchanger is installed in a lower portion than the treatment tank in a vertical direction.

### Claim 2

A solid-liquid separation device that performs dehydration or deoiling from an object to be treated that is a mixture of water and a solid, a mixture of oil and a solid, or a mixture of water, oil, and a solid, as the object to be treated, using a substance A capable of dissolving water and oil, the solid-liquid separation device comprising:
a substance B that is circulated while generating phase change in a closed system;
a compressor that compresses the substance B;
a first heat exchanger that exchanges heat of condensation of the substance B and heat of evaporation of the substance A;
a second heat exchanger that exchanges heat of evaporation of the substance B and heat of condensation of the substance A;
a treatment tank in which the substance A is mixed with the object to be treated, the substance A having been evaporated while separated from the water or the oil in the first heat exchanger, and condensed in the second heat exchanger; and
a third heat exchanger installed downstream of the treatment tank and upstream of the first heat exchanger in a flow path system of the substance A, and which switches a flow path of the substance B flowing into the heat exchanger 1 in an upper stream of the heat exchanger 1 to exchange heat between the substance B and the substance A, wherein
the third heat exchanger is installed in a lower portion than the treatment tank in a vertical direction.

### Claim 3 (depends on 1)

The solid-liquid separation device according to claim 1, wherein
a flow path of the substance B is installed above a liquid level of the substance A in the second heat exchanger.

### Claim 4 (depends on 1)

The solid-liquid separation device according to claim 1, wherein
a flow path of the substance B is installed below a liquid level of the substance A in the first heat exchanger.

### Claim 5 (depends on 1)

A biofuel extraction device, wherein
in the solid-liquid separation device according to claim 1, oils and fats are able to be extracted by filling the treatment tank with plant cells or animal cells.

### Claim 6 (depends on 1)

A sludge treatment device, wherein
in the solid-liquid separation device according to claim 1, moisture is able to be removed from sludge that is generated in water treatment by filling the treatment tank with the sludge.

### Claim 7 (depends on 1)

A water treatment device, wherein
in the solid-liquid separation device according to claim 1, filthy water is able to be continuously purified by filling the treatment tank with activated carbon, and alternately switching the filthy water and the substance A to cause the filthy water and the substance A to come in contact with the activated carbon.

### Claim 8 (depends on 1)

A water treatment device, wherein
in the solid-liquid separation device according to claim 1, the substance A is dimethyl ether.