A system and method for recovering sulfur in a copper smelting process includes removing fine dust from high-concentration SO.sub.2 flue gas from a matte smelting furnace, introducing the flue gas into a fluidized bed carbothermic reduction tower to be reduced by a carbon-based reducing agent to obtain reducing gas, passing the reducing gas through a high temperature separator to separate down unsaturated powder coke contained in the reducing gas, and condensing the reducing gas to obtain sulfur. The saturated powder coke entrained in the reducing gas enters a desorption tower to desorb SO.sub.2 gas therein, and the desorbed powder coke enters a fluidized bed sulfur reduction tower to continue to participate in the reduction reaction. Part of the SO.sub.2 gas discharged from the desorption tower is discharged to the fluidized bed carbothermic reduction tower to produce sulfur, and the other part enters a desulfurization tower.

A system and method for recovering sulfur in a copper smelting process includes removing fine dust from high-concentration SO.sub.2 flue gas from a matte smelting furnace, introducing the flue gas into a fluidized bed carbothermic reduction tower to be reduced by a carbon-based reducing agent to obtain reducing gas, passing the reducing gas through a high temperature separator to separate down unsaturated powder coke contained in the reducing gas, and condensing the reducing gas to obtain sulfur. The saturated powder coke entrained in the reducing gas enters a desorption tower to desorb SO.sub.2 gas therein, and the desorbed powder coke enters a fluidized bed sulfur reduction tower to continue to participate in the reduction reaction. Part of the SO.sub.2 gas discharged from the desorption tower is discharged to the fluidized bed carbothermic reduction tower to produce sulfur, and the other part enters a desulfurization tower.

A boiler for co-firing municipal solid waste and short timber for cultivating fungus includes a boiler chamber and fire grate, where the boiler chamber comprises a furnace, a reburning chamber and a third flue, a front arch and a rear arch are arranged on a lower portion of the furnace and located above the fire grate, and a short timber for cultivating fungus feeding device is arranged on a lower portion of a front wall of the furnace. The short timber for cultivating fungus feeding device includes a star-shaped feeding machine and a hopper, a skin expansion joint is arranged between the star-shaped feeding machine and the hopper, and an air pipe is arranged on the hopper. A layer of a plurality of boiler internal desulfurization desulfurization nozzles and two layers of a plurality of Polymer Non-Catalytic Reduction denitration nozzles are arranged in a height direction of the furnace.

A carbon dioxide separation recovery method includes: bringing a particulate carbon dioxide adsorbent and a treatment target gas containing carbon dioxide into contact with each other to make the carbon dioxide adsorbent adsorb the carbon dioxide contained in the treatment target gas; and bringing the carbon dioxide adsorbent which has adsorbed the carbon dioxide and desorption steam into contact with each other to desorb the carbon dioxide from the carbon dioxide adsorbent, and thereby, regenerate the carbon dioxide adsorbent and recover the desorbed carbon dioxide. The step of recovering the carbon dioxide includes utilizing a recovery gas as a heat source of a heat exchanger, the recovery gas containing the desorption steam which has contacted the carbon dioxide adsorbent and the carbon dioxide which has been desorbed from the carbon dioxide adsorbent.

A carbon dioxide separation recovery method includes: bringing a particulate carbon dioxide adsorbent and a treatment target gas containing carbon dioxide into contact with each other to make the carbon dioxide adsorbent adsorb the carbon dioxide contained in the treatment target gas; and bringing the carbon dioxide adsorbent which has adsorbed the carbon dioxide and desorption steam into contact with each other to desorb the carbon dioxide from the carbon dioxide adsorbent, and thereby, regenerate the carbon dioxide adsorbent and recover the desorbed carbon dioxide. The step of recovering the carbon dioxide includes utilizing a recovery gas as a heat source of a heat exchanger, the recovery gas containing the desorption steam which has contacted the carbon dioxide adsorbent and the carbon dioxide which has been desorbed from the carbon dioxide adsorbent.

A carbon dioxide separation recovery method includes: bringing a particulate carbon dioxide adsorbent and a treatment target gas containing carbon dioxide into contact with each other to make the carbon dioxide adsorbent adsorb the carbon dioxide contained in the treatment target gas; and bringing the carbon dioxide adsorbent which has adsorbed the carbon dioxide and superheated steam into contact with each other to desorb the carbon dioxide from the carbon dioxide adsorbent and thereby regenerate the carbon dioxide adsorbent, and recovering the desorbed carbon dioxide. A saturation temperature of the superheated steam which is brought into contact with the carbon dioxide adsorbent is not more than a temperature of the carbon dioxide adsorbent which contacts the superheated steam. The regenerated carbon dioxide adsorbent is utilized for adsorption of the carbon dioxide again without being subjected to a drying step.

A carbon dioxide separation recovery method includes: bringing a particulate carbon dioxide adsorbent and a treatment target gas containing carbon dioxide into contact with each other to make the carbon dioxide adsorbent adsorb the carbon dioxide contained in the treatment target gas; and bringing the carbon dioxide adsorbent which has adsorbed the carbon dioxide and superheated steam into contact with each other to desorb the carbon dioxide from the carbon dioxide adsorbent and thereby regenerate the carbon dioxide adsorbent, and recovering the desorbed carbon dioxide. A saturation temperature of the superheated steam which is brought into contact with the carbon dioxide adsorbent is not more than a temperature of the carbon dioxide adsorbent which contacts the superheated steam. The regenerated carbon dioxide adsorbent is utilized for adsorption of the carbon dioxide again without being subjected to a drying step.

The present disclosure provides systems for carbon capture in combination with production of one or more industrially useful materials. The disclosure also provides methods for carrying out carbon capture in combination with an industrial process. In particular, carbon capture can include carrying out calcination in a reactor, separation of carbon dioxide rich flue gases from industrially useful products, and capture of at least a portion of the carbon dioxide for sequestration of other use, such as enhanced oil recovery.

A system for large scale capture of atmospheric carbon dioxide while exposed to air and weather in an outdoor environment, includes a large flat slab with a perimeter wall projecting above its surface; one or more rotary fans, providing uniform, high volume, low velocity, turbulent air flow over the entire slab surface; a transport system transferring powder—a particulate material mixed with air—to and from all locations on the slab or on an overlying mesh screen, a kiln, closed to outside air, and a compressor. The transport system includes either a vacuum/deposition system or a conveyor system with one or more conveyors. The kiln heats the particulate material, delivered by the transport system from the slab, to output released carbon dioxide, previously absorbed by the particulate material in the powder, to the compressor for compression, and either the heated particulate material, or a processed version of it.

A system for large scale capture of atmospheric carbon dioxide while exposed to air and weather in an outdoor environment, includes a large flat slab with a perimeter wall projecting above its surface; one or more rotary fans, providing uniform, high volume, low velocity, turbulent air flow over the entire slab surface; a transport system transferring powder—a particulate material mixed with air—to and from all locations on the slab or on an overlying mesh screen, a kiln, closed to outside air, and a compressor. The transport system includes either a vacuum/deposition system or a conveyor system with one or more conveyors. The kiln heats the particulate material, delivered by the transport system from the slab, to output released carbon dioxide, previously absorbed by the particulate material in the powder, to the compressor for compression, and either the heated particulate material, or a processed version of it.