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

Patent metadata

Field	Value
Publication number	US-2016067651-A1
Application number	US-201514941774-A
Country	US
Kind code	A1
Filing date	Nov 16, 2015
Priority date	Jun 10, 2013
Publication date	Mar 10, 2016
Grant date	—

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

1 . An impurity removal device for water-containing gas comprising a filler-integrated cooler having a cooler body with a cooling space, a gas inlet in communication with an inner underside of the cooling space, a gas outlet in communication with an inner upside of the cooling space, a cooling pipe arranged in the cooling space between the gas inlet and outlet for making cooling fluid go around from a cooling fluid inlet through the cooling space to discharge the cooling fluid through a cooling fluid outlet and a filler arranged in the cooling space to partition the cooling space vertically into portions with the gas inlet and outlet, respectively; nozzles arranged in the inner upside of the cooling space; a drain circulator for pumping drain through a drain outlet arranged at a drain reservoir in an inner bottom of the cooling space to the nozzles for injection of the drain; and an alkaline agent addition unit for adding an alkaline agent to the drain.

2 . The device for removing the impurities in the water-containing gas as claimed in claim 1 , further comprising a pH sensor for detecting a pH of drain in the drain reservoir and an alkaline agent controller for controlling 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 device for removing the impurities in the 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 device for removing the impurities in the 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 device for removing the impurities in the water-containing gas as claimed in claim 1 , wherein the gas inlet is connected to a compressor.

6 . The device for removing the impurities in the water-containing gas as claimed in claim 1 further comprising a freezer arranged between the cooling fluid outlet and inlet.

7 . An impurity removal system for water-containing gas comprising, downstream of an impurity removal mechanism for removing impurities in gas from an oxyfuel combustor comprising a plurality of impurity separators with a plurality of compressors and aftercoolers for cooling the gas compressed by the compressors to discharge condensed drain, respectively,
a filler-integrated cooler comprising a cooler body with a cooling space, a gas inlet in communication with an inner downside of the cooling space, a gas outlet in communication with an inner upside of the cooling space, a cooling pipe arranged in the cooling space between the gas inlet and outlet for making cooling fluid go around from a cooling fluid inlet through the cooling space to discharge the cooling fluid through a cooling fluid outlet and a filler arranged in the cooling space to partition the cooling space vertically into portions with the gas inlet and outlet, respectively; a nozzle arranged in the inner upside of the cooling space; a drain circulator for pumping drain through a drain outlet arranged at a drain reservoir in an inner bottom of the cooling space to the nozzle for injection of the drain; a freezer arranged between the cooling fluid outlet and inlet; and an alkalinity-control-agent supply flow passage for supply of the drain in the drain reservoir in the cooler body, as an alkalinity control agent, to at least an upstream side of the aftercooler in a first one of the impurity separators.

Assignees

• Ihi Corp

Inventors

• Naito Toshiyuki

Classifications

• B01D5/0009

  Horizontal tubes · CPC title

• B01D53/002

  by condensation · CPC title

• B01D53/79 Primary

  Injecting reactants · CPC title

• B01D2251/40

  Alkaline earth metal or magnesium compounds · CPC title

• Y02E20/34

  Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery · CPC title