FILTER CLEANING APPARATUS

• US 20140183124A1
• Filed: 08/02/2012
• Published: 07/03/2014
• Est. Priority Date: 08/05/2011
• Status: Active Grant

• Current Assignee: Cosmo Oil Company Limited (Cosmo Energy Holdings Co., Ltd.), JX Nippon Oil & Energy Corporation (ENEOS Holdings, Inc.), Inpex Corporation, Japan Oil, Gas and Metals National Corporation, Japan Petroleum Exploration Company Limited, Nippon Steel & Sumikin Engineering Co., Ltd. (Nippon Steel Corporation)
• Original Assignee: Cosmo Oil Company Limited (Cosmo Energy Holdings Co., Ltd.), JX Nippon Oil & Energy Corporation (ENEOS Holdings, Inc.), Inpex Corporation, Japan Oil, Gas and Metals National Corporation, Japan Petroleum Exploration Company Limited, Nippon Steel & Sumikin Engineering Co., Ltd. (Nippon Steel Corporation)
• Inventors: Murata, Atsushi, Yamada, Eiichi, Fukumoto, Shinji
• Granted Patent: US 9,248,387 B2
• Time in Patent Office: Days
• US Class Current: 210/411
• CPC Class Codes: B01D 29/66 by flushing, e.g. counter-current air-bumps
• CPC Class Codes: B01D 29/668 with valves, e.g. rotating valves for coaxially placed filtering elements
• CPC Class Codes: B01D 35/027 rigidly mounted in or on tanks or reservoirs B01D35/04 takes precedence
• CPC Class Codes: B01D 35/12 Devices for taking out of action one or more units of multi- unit filters, e.g. for regeneration
• CPC Class Codes: C10G 2/00 Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon
• CPC Class Codes: C10G 2300/1022 Fischer-Tropsch products
• CPC Class Codes: C10G 31/09 by filtration

Abstract

A filter cleaning apparatus used in a reaction system including; a reaction tank having a filter, first feed line connected to the filter at one end, a recovery tank connected to the other end of the first feed line, and second feed line connected to the recovery tank at one end, is provided. The filter cleaning apparatus includes; first return line connected the second feed line at one end, first and second reverse cleaning solution tanks connected to the first return line, a first flow rate adjusting valve that can adjust filtered fluid to be supplied to the first reverse cleaning solution tank, a second flow rate adjusting valve that can adjust filtered fluid to be supplied to the second reverse cleaning solution tank, and a switching section that carries either one of the filtered fluids accommodated in these reverse cleaning solution tanks by switching.

Claims

1. A filter cleaning apparatus included in a reaction system, the reaction system being provided with:

a reaction tank that can accommodate a catalyst and a formed body formed by a chemical reaction using the catalyst and that has a filter that filters the catalyst therein;

a first feed line that is connected to the filter at one end and that feeds filtered fluid that has passed through the filter;

a recovery tank that is connected to the other end of the first feed line and that accommodates the filtered fluid; and

a second feed line that is connected to the recovery tank at one end and that feeds out the filtered fluid from the other end, and the filter cleaning apparatus is configured to remove the catalyst adhered to the filter, the apparatus comprising;

a first return line connected to an intermediate part of the second feed line at one end to feed the filtered fluid;

a first reverse cleaning solution tank and a second reverse cleaning solution tank connected to the first return line and supplied with the filtered fluid;

a first flow rate adjusting valve that can adjust a flow rate of the filtered fluid to be supplied from the first return line to the first reverse cleaning solution tank;

a second flow rate adjusting valve that can adjust a flow rate of the filtered fluid to be supplied from the first return line to the second reverse cleaning solution tank;

a switching section connected to the first reverse cleaning solution tank and the second reverse cleaning solution tank to feed either one of the filtered fluids accommodated in the first reverse cleaning solution tank and the second reverse cleaning solution tank by switching;

second return line connected to the switching section at one end, provided with a returning on-off valve at an intermediate part, and connected to an intermediate part of the first feed line at the other end; and

a discharging on-off valve provided on the first feed line so as to be closer to the other end of the first feed line than a portion of the first feed line at which the other end of the second return line is connected.

2. A filter cleaning apparatus according to claim 1, comprising a buffer tank for accommodating the filtered fluid on one end side of the second feed line from a portion of the second feed line to which one end of the first return line is connected.

3. A filter cleaning apparatus according to claim 1, wherein

the reaction tank includes a first filter and a second filter as the filter,

the first feed line includes:

a first auxiliary feed line connected to the first filter at one end;

a second auxiliary feed line connected to the second filter at one end; and

a main feed line connected to the other end of the first auxiliary feed line and the other end of the second auxiliary feed line at one end, and connected to the recovery tank at the other end,

the second return line includes;

a main return line connected to the switching section at one end;

a first auxiliary return line connected to the other end of the main return line at one end, and connected to an intermediate part of the first auxiliary feed line at the other end; and

a second auxiliary return line connected to the other end of the main return line at one end, and connected to an intermediate part of the second auxiliary feed line at the other end,

and the filter cleaning apparatus includes, as the returning on-off valve,

a first returning on-off valve provided at an intermediate part of the first auxiliary return line, and

a second returning on-off valve provided at an intermediate part of the second auxiliary return line, and

the filter cleaning apparatus further includes, as the discharging on-off valve,

a first discharging on-off valve provided on the other end side of the first auxiliary feed line from a portion thereof to which the other end of the first auxiliary return line is connected, and

a second discharging on-off valve provided on the other end side of the second auxiliary feed line from a portion thereof to which the other end of the second auxiliary return line is connected.

4. A filter cleaning apparatus according claim 2, wherein

the reaction tank includes a first filter and a second filter as the filter,

the first feed line includes:

a first auxiliary feed line connected to the first filter at one end;

a second auxiliary feed line connected to the second filter at one end; and

a main feed line connected to the other end of the first auxiliary feed line and the other end of the second auxiliary feed line at one end, and connected to the recovery tank at the other end,

the second return line includes;

a main return line connected to the switching section at one end;

a first auxiliary return line connected to the other end of the main return line at one end, and connected to an intermediate part of the first auxiliary feed line at the other end; and

a second auxiliary return line connected to the other end of the main return line at one end, and connected to an intermediate part of the second auxiliary feed line at the other end,

and the filter cleaning apparatus includes, as the returning on-off valve,

a first returning on-off valve provided at an intermediate part of the first auxiliary return line, and

a second returning on-off valve provided at an intermediate part of the second auxiliary return line, and

the filter cleaning apparatus further includes, as the discharging on-off valve,

a first discharging on-off valve provided on the other end side of the first auxiliary feed line from a portion thereof to which the other end of the first auxiliary return line is connected, and

a second discharging on-off valve provided on the other end side of the second auxiliary feed line from a portion thereof to which the other end of the second auxiliary return line is connected.