Embodiments of the present disclosure are directed to systems and methods of removing carbon dioxide from a gaseous stream using magnesium hydroxide and then regenerating the magnesium hydroxide. In some embodiments, the systems and methods can further comprise using the waste heat from one or more gas streams to provide some or all of the heat needed to drive the reactions. In some embodiments, magnesium chloride is primarily in the form of magnesium chloride dihydrate and is fed to a decomposition reactor to generate magnesium hydroxychloride, which is in turn fed to a second decomposition reactor to generate magnesium hydroxide.

The present invention relates to a denitration and waste heat recovery integrated furnace, comprising a denitration system, a desulfurization system and a waste heat recovery system. An air outlet of the denitration system is connected to an inlet of a dust collector (4), an outlet of the dust collector (4) is connected to an air inlet of the desulfurization system, an air outlet of the desulfurization system is connected to an air compressor (6) of the waste heat recovery system, and the waste heat recovered by the air compressor (6) is used for heat energy utilization of other departments.

Provided is an air pollution control system including: a boiler, a denitration apparatus; an air heater; a precipitator; a desulfurization apparatus; a dehydrator; a concentration apparatus that is configured to remove some of water of dehydrated filtrate from the dehydrator; a spray drying apparatus provided with a spray unit that is configured to spray concentrated/dehydrated filtrate concentrated by the concentration apparatus; and a flue gas introduction line through which branch gas branched from the flue gas is introduced to the spray drying apparatus.

A method for treating a flue gas that includes determining a sulfur trioxide concentration within the flue gas and determining an injection rate for a sulfur trioxide sorbent based upon the sulfur trioxide concentration. Also, a method for treating a flue gas that includes determining a sulfuric acid dew point for the flue gas and determining a coolant injection rate for a coolant to be injected into the flue gas to cause the flue gas to have a temperature of from about 20 to about 30 F. above the sulfuric acid dew point.

A method and system for cost effectively converting a feedstock using thermal plasma, or other styles of gassifiers, into a feedwater energy transfer system. The feedstock can be any organic material, or fossil fuel. The energy transferred in the feedwater is converted into steam which is then injected into the low turbine of a combined cycle power plant. Heat is extracted from gas product issued by a gassifier and delivered to a power plant via its feedwater system. The gassifier is a plasma gassifier and the gas product is syngas. In a further embodiment, prior to performing the step of extracting heat energy, there is is provided the further step of combusting the syngas in an afterburner. An air flow, and/or EGR flow is provided to the afterburner at a rate that is varied in response to an operating characteristic of the afterburner. The air flow to the afterburner is heated.

A heat store component for passage of a gas flow, in particular, in heat exchangers of flue gas cleaning systems, is provided, including: a mounting forming an inlet and an outlet side of the heat store component for the gas flow fed therethrough; and a first and a second heat storage medium arranged one behind the other in the gas flow direction and each including a plurality of substantially parallel flow channels. The second heat storage medium is formed from one or more honeycomb blocks, which include a body made in one-piece manner of a plastics material and incorporating a plurality of parallel flow channels separated by channel walls, wherein the plastics material includes a plastic containing virgin polytetrafluoroethylene (PTFE) as a fraction of ca. 80% by weight or more and optionally a high performance polymer differing from the PTFE as a fraction of ca. 20% by weight or less.

The present technology describes various embodiments of systems and methods for handling emissions. More specifically, some embodiments are directed to systems and methods for collecting heated particulate from a coal processing system. In one embodiment, a method of handling emissions from a coal processing system includes inletting the emissions into a duct. The emissions include heated particulate. The method further includes slowing a speed of the emissions traveling through the duct and disengaging the heated particulate from the emissions without the use of a physical barrier. In some embodiments, the heated particulate is slowed, cooled, and diverted from an emissions pathway into a collection bin.

The present invention relates to a denitration and waste heat recovery integrated furnace, comprising a denitration system, a desulfurization system and a waste heat recovery system. An air outlet of the denitration system is connected to an inlet of a dust collector (4), an outlet of the dust collector (4) is connected to an air inlet of the desulfurization system, an air outlet of the desulfurization system is connected to an air compressor (6) of the waste heat recovery system, and the waste heat recovered by the air compressor (6) is used for heat energy utilization of other departments.

In a power generation facility (10) wherein a fluidized bed combustion unit (12) produces steam to power a steam turbine generator (32), a heat recovery steam generator (20) produces steam for the steam turbine generator. Electrical power from the steam turbine generator is conducted to a motor (40) that drives and air compressor (36). The air compressor provides pressurized air back to the fluidized bed combustion unit (12) to promote fuel combustion. Flue gas from the heat recovery steam generator is selectively conducted to a CO2 capture unit (18) and then to a gas expander (42) that assists the motor in driving the air compressor (36). A heat exchanger (46) that is upstream of the CO2 Capture Unit and a heat exchanger (56) that is downstream of the CO2 Capture Unit and upstream of the air expander have thermal fluid sides that are connected in a closed circuit. The heat exchangers (46 and 56) convey heat away from the CO2 Capture Unit and provide heat to flue gas flowing to the gas expander to avoid icing conditions in the gas expander and acid condensation in the air emission stack.

Provided is an air pollution control system including: a boiler, a denitration apparatus; an air heater; a precipitator; a desulfurization apparatus; a dehydrator; a concentration apparatus that is configured to remove some of water of dehydrated filtrate from the dehydrator; a spray drying apparatus provided with a spray unit that is configured to spray concentrated/dehydrated filtrate concentrated by the concentration apparatus; and a flue gas introduction line through which branch gas branched from the flue gas is introduced to the spray drying apparatus.