# US 2017/0282157 A1 · Process for regenerating filter aid used in a winterization process

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2017/0282157 A1
- Document ID: US20170282157A1
- Status: Published application
- Kind: A1
- Application number: 15/605,104
- Filed: 2017-05-25
- Published: 2017-10-05
- Earliest claimed: 2012-09-27
- Assignees: Bunge NöVéNyolajipari ZáRtköRuen MuköDo RéSzvéNytáRsasáG
- Applicants: Bunge NöVéNyolajipari ZáRtköRuen MuköDo RéSzvéNytáRsasáG
- Inventors: Zsolt KEMENY; Stéphane GOLINSKI; Oleg BEREZNEV; Andrey MAKARENKO
- Web page: https://patentgrep.com/patent/US20170282157A1

## CPC

- C11B 13/04: from spent adsorption materials
- B01D 29/39: with hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type
- B01D 29/62: Regenerating the filter material in the filter (devices for taking out of action one or more units of multi-unit filters, e.g. for regeneration, B01D35/12)
- B01D 29/66: by flushing, e.g. counter-current air-bumps
- B01D 37/02: Precoating the filter medium; Addition of filter aids to the liquid being filtered {(devices for feeding reagents C02F1/685 and sub-groups; filter aids)}
- B01D 41/04: of rigid self-supporting filtering material
- B01J 20/106: {Perlite}
- B01J 20/14: Diatomaceous earth
- B01J 20/24: Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
- B01J 20/3425: {of sorbents or filter aids comprising organic materials}
- B01J 20/3433: {of sorbents or filter aids other than those covered by B01J20/3408 - B01J20/3425}
- B01J 20/3475: {in the liquid phase}
- C11B 7/0075: {by differences of melting or solidifying points}
- C11B 7/0083: {with addition of auxiliary substances, e.g. cristallisation promotors, filter aids, melting point depressors, (if a characterised solution is formed C11B7/0008)}
- B01J 2220/4825: Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
- Y02W 30/74: Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
- 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)
- 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
- Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT

## Abstract

The present invention relates to a process for in situ regeneration of spent filler aid including the steps of: a) circulating through a spent filter aid cake in a circulation loop a regenerating oil at a temperature of from 40° C. to 100° C., in a regenerating oil spent filter aid (v/w)ratio from 0,3/1 to 12/1; b) removing the regenerating oil from the treated spent filter aid cake; and recovering the regenerated filter aid,

## Claims

### Claim 1

A process for in situ regeneration of spent filter aid from a winterization process on a pressure leaf filter comprising the successive steps of:
a) circulating a regenerating oil through a spent filter aid cake in a direction of filtration in a circulation loop at a temperature of from 40° C. to 100° C., in a regenerating oil/spent filter aid (v/w) ratio of from 0.3/1 to 12/1;
b) removing a portion of the regenerating oil from the spent filter aid cake resulting from step a), by draining and then blowing the treated spent filter aid cake, to form a treated spent filter aid cake containing from 35% to 50% of regenerating oil; and
c) recovering the treated spent filter aid cake thus regenerated.

### Claim 2 (depends on 1)

A process according to claim 1, wherein the regenerating oil is a non-refined, partially refined or fully refined vegetable oil.

### Claim 3 (depends on 2)

A process according to claim 2, wherein the vegetable oil is chosen as being partially refined or fully refined sunflower oil, olive, corn oil or cottonseed oil.

### Claim 4 (depends on 1)

A process according to claim 1, wherein the regenerating oil is chosen as being the same oil as the oil being winterized in the winterization process having generated the spent filter aid.

### Claim 5 (depends on 1)

A process according to claim 1, wherein the regenerating oil circulates through the spent filter aid cake at a temperature of from 45° C. to 85° C.

### Claim 6 (depends on 1)

A process according to claim 1, wherein the regenerating oil is circulating through the spent filter aid cake during 5 to 60 minutes.

### Claim 7 (depends on 1)

A process according to claim 1, wherein the regenerating oil/spent filter aid (v/w) ratio of from 1/1 to 9/1.

### Claim 8 (depends on 1)

A process according to claim 1, wherein a portion of the regenerating oil from the spent filter aid cake treated in step b) is blown with air or an inert gas.

### Claim 9 (depends on 1)

A process according to claim 1, wherein the spent filter aid cake is located in the pressure leaf filter, and the pressure leaf filter is located in an oil winterization apparatus.

### Claim 10 (depends on 1)

A process according to claim 1, wherein the step h) comprises draining using air pressure and then blowing using air or an inert gas.

### Claim 11 (depends on 10)

A process according to claim 10, wherein the inert gas comprises nitrogen.

### Claim 12 (depends on 1)

A process according to claim 1, wherein in the step b) the spent filter aid cake is not blown with steam.