Device for removing impurities from water-containing gas and impurities removal system

Patent metadata

Field	Value
Publication number	US-10376835-B2
Application number	US-201514941774-A
Country	US
Kind code	B2
Filing date	Nov 16, 2015
Priority date	Jun 10, 2013
Publication date	Aug 13, 2019
Grant date	Aug 13, 2019

Abstract

Provided are a filler-integrated cooler having a cooler body with cooling space, gas inlet and outlet and communicated with bottom and top of the cooling space, a cooling pipe in the cooling space between the gas inlet and outlet to make cooling fluid from a cooling-fluid inlet go around in the cooling space and discharge the same through a cooling-fluid outlet and a filler vertically partitioning the cooling space into portions with the gas inlet and outlet, a nozzle arranged above in the cooling space, a drain circulator supplying drain in a drain reservoir at inner bottom of the cooling space through a drain outlet to the nozzles, using a pump, and an alkaline-agent addition unit to add an alkaline agent to drain.

First claim

The invention claimed is:

1. An impurity removal device for water-containing gas connected to an impurity separator including a compressor to which gas is introduced from an oxyfuel combustor and an aftercooler for cooling the gas compressed by the compressor to discharge condensed drain, said impurity removal device comprising:
a cooler with a cooling space, and a drain reservoir in an inner bottom of said cooling space;
a filler arranged in said cooling space to vertically partition a space above said drain reservoir;
a gas inlet connected to said cooler to communicate with an inner underside of said cooling space defined by said filler for introduction of the water-containing gas for said aftercooler;
a gas outlet connected to said cooler to communicate with an inner upside of said cooling space defined by said filler;
a cooling pipe arranged in the inner underside of said cooling space defined by said filler and through which cooling fluid passes;
a cooling fluid inlet on a first end of said cooling pipe;
a cooling fluid outlet on a second end of said cooling pipe;
nozzles arranged in the inner upside of said cooling space defined by said filler;
a drain circulator with a drain outlet on a bottom of said cooler for discharge of drain from said drain reservoir, a circulation flow passage for communication of said drain outlet with said nozzles, and a pump arranged in said circulation flow passage, thereby injecting the drain through the nozzles; and
an alkaline agent addition unit with a flow passage communicated with said circulation flow passage for adding an alkaline agent to the drain.

2. The impurity removal device for water-containing gas as claimed in claim 1 , further comprising:
a supply valve arranged in the flow passage of said alkaline agent addition unit;
a pH sensor for detecting a pH of drain in the drain reservoir; and
an alkaline agent controller for controlling an opening degree of said supply valve to control a supply of the alkaline agent by the alkaline agent addition unit so as to keep a pH value detected by the pH sensor to a set value.

3. The impurity removal device for water-containing gas as claimed in claim 1 , further comprising:
a level gauge for detecting a level of the drain in the drain reservoir; and
a level controller for controlling a control valve at the drain outlet so as to keep a level value detected by the level gauge to a set value.

4. The impurity removal device for water-containing gas as claimed in claim 2 , further comprising:
a level gauge for detecting a level of the drain in the drain reservoir; and
a level controller for controlling a control valve at the drain outlet so as to keep a level value detected by the level gauge to a set value.

5. The impurity removal device for water-containing gas as claimed in claim 1 , further comprising:
a cooling fluid circulation flow passage for connecting said cooling fluid outlet with said cooling fluid inlet; and
a freezer arranged in said cooling fluid circulation flow passage.

6. The impurity removal device for water-containing gas as claimed in claim 1 , further comprising a partition plate which provides a partition between the cooling fluid inlet and the cooling fluid outlet.

7. The impurity removal device for water-containing gas as claimed in claim 1 , wherein the filler includes an upper pored plate, a lower pored plate, and particles filled between the upper pored plate and the lower pored plate.

Assignees

• Ihi Corp

Inventors

• Naito Toshiyuki

Classifications

• B01D2257/602

  Mercury or mercury compounds · CPC title

• B01D2257/404

  Nitrogen oxides other than dinitrogen oxide · CPC title

• B01D2258/0283

  Flue gases · CPC title

• B01D2257/302

  Sulfur oxides · CPC title

• B01D2251/304

  of sodium · CPC title