Filter cleaning apparatus

Patent metadata

Field	Value
Publication number	US-9248387-B2
Application number	US-201214236669-A
Country	US
Kind code	B2
Filing date	Aug 2, 2012
Priority date	Aug 5, 2011
Publication date	Feb 2, 2016
Grant date	Feb 2, 2016

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.

First claim

The invention claimed is:

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.

Assignees

• Murata Atsushi
• Yamada Eiichi
• Fukumoto Shinji
• Japan Oil Gas & Metals Jogmec
• Inpex Corp
• Jx Nippon Oil & Energy Corp
• Japan Petroleum Exploration Co
• Cosmo Oil Co Ltd
• Nippon Steel & Sumikin Eng Co

Inventors

• Murata Atsushi
• Yamada Eiichi
• Fukumoto Shinji

Classifications

• C10G2/00

  Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon · CPC title

• C10G31/09 Primary

  by filtration · CPC title

• C10G2300/1022

  Fischer-Tropsch products · CPC title

• B01D29/66

  by flushing, e.g. counter-current air-bumps · CPC title

• B01D29/668 Primary

  with valves, e.g. rotating valves for coaxially placed filtering elements · CPC title