A carbon fiber production method includes a carbon fiber production step including an oxidation step and a carbonization step; and an exhaust gas processing step including a heat exchange step; an external air mixing step; and a mixed external air supplying step in which the mixed external air is supplied to at least one step that uses heated gas in the steps in the carbon fiber production step; and among the exhaust gases, a high heating value exhaust gas having a heating value of 250 kcal/Nm.sup.3 or higher is supplied to an inlet side of an exhaust gas combustion apparatus and a low heating value exhaust gas having a heating value lower than 150 kcal/Nm.sup.3 is supplied to an outlet side of the exhaust gas combustion apparatus, respectively.

A power-generation system having a combined heat and power plant and a fermentation plant has an electrolysis plant, which is connected by lines to both the combined heat and power plant and to the fermentation plant. This arrangement enables a method in which heat from a combined heat and power plant can be used for a fermentation plant and additionally heat from an electrolysis plant can be used for the fermentation plant, whilst the oxygen from the electrolysis plant is used for the combined heat and power plant.

There is provided a process for growing a phototrophic biomass in a reaction zone, wherein the reaction zone includes a reaction mixture that is operative for effecting photosynthesis upon exposure to photosynthetically active light radiation, wherein the reaction mixture includes phototrophic biomass that is operative for growth within the reaction zone. The process includes supplying at least a fraction of gaseous exhaust material, being discharged from an industrial process, to the reaction zone, exposing the reaction mixture to photosynthetically active light radiation and effecting growth of the phototrophic biomass in the reaction zone, wherein the effected growth includes growth effected by photosynthesis, and modulating distribution of a molar rate of supply of carbon dioxide, being exhausted from the reaction zone, as between a smokestack and at least another point of discharge.

A burner capable of burning crude or other heavy oil. A combustion chamber is surrounded by a wall of thermal insulation. An air-fuel injector pipe extends through the wall and opens into the combustion chamber. An oil supply pipe extends along the interior of the air fuel injector pipe to an inner open end that is proximate the inner end of the air-fuel injector pipe. A venturi insert is fixed within the air-fuel injector pipe and has an orifice positioned outward of the open inner end of the oil supply pipe. A combustion air supply including a blower and a recuperator transfers heat from outgoing combusted exhaust gases to incoming combustion-supporting air being blown through the recuperator and the air fuel injector pipe into the combustion chamber.

A rural bulk organic waste pollutant source comprehensive treatment system including a solid high-temperature aerobic fermentation reactor, a liquid high-temperature aerobic fermentation reactor and a multifunctional boiler is provided. A rural bulk organic waste pollutant source comprehensive treatment method. For excretion waste of a livestock farm adopting the technology of manure cleaning by urine submerging, a solid-liquid separation is firstly performed thereto, wherein solid is conveyed to the solid high-temperature aerobic fermentation reactor and fermented to produce solid organic fertilizers, and liquid is conveyed to the liquid high-temperature aerobic fermentation reactor and fermented to produce liquid organic fertilizers. For dry collection manure of a livestock and poultry farm, carbon-containing auxiliary materials, residues left after dead animals and household waste being incinerated by the multifunctional boiler, and ash generated by straw burning are added thereto, and then the mixture is conveyed to the solid high-temperature aerobic fermentation reactor and fermented to produce solid organic fertilizers. Exhaust fume and hot water produced by the multifunctional boiler pass through the solid high-temperature aerobic fermentation reactor and the liquid high-temperature aerobic fermentation reactor to heat the reactors and keep the reactors warm.

A waste organic solids burner integrated with an ethanol plant includes a burner receiving waste organic syrup, combustion air dryer exhaust and natural gas from the ethanol plant. A baghouse receives burner exhaust and extracts particulate matter and hot gas, which is sent to a waste boiler. Cool gas from the waste boiler is sent to a heat recovery scrubber, from which hot water is sent to the ethanol plant as an energy source.

A flue gas purification system for hazardous waste incineration and a purification method are provided. The flue gas purification system includes a cooling deacidification coupling device. The cooling deacidification coupling device includes a reaction tower. A top of the reaction tower is installed with a spraying device, an inlet end of the spraying device is connected to a first liquid inlet pipe and a second liquid inlet pipe, the first liquid inlet pipe and the second liquid inlet pipe are configured to transmit a cooling substance and a deacidification substance. The reaction tower is connected to a gas inlet pipe and a gas outlet pipe. A bottom of the reaction tower is connected to an output pipe configured to output substances generated in the reaction tower. The spraying device is configured to mix the cooling substance and the deacidification substance with the flue gas.

A carbon oxidizer includes a carbon burner apparatus, a cyclone, a heat exchanger, and a venturi zinc scrubber. The carbon burner apparatus is configured to oxidize carbon such that mercury is vaporized from the carbon when the carbon is oxidized. The cyclone is fluidly coupled to the carbon burner apparatus and is configured to receive the oxidized carbon from the carbon burner apparatus. The heat exchanger is fluidly coupled to the cyclone and is configured to reduce a temperature of the vaporized mercury. The venturi zinc scrubber is fluidly coupled to the heat exchanger and is configured to receive the vaporized mercury from the heat exchanger.

A system and method for clean and low-carbon in-situ disposal of waste incineration fly ash includes a waste incineration system and a fly ash disposal system. The fly ash disposal system includes a water washing system, an MVR system, and a dioxin removal system. The water washing system includes a water washing device and a press filtering device. The dioxin removal system includes a heating device, an activated carbon adsorption device, and a heat pump system. The MVR system includes a crystallizer, a heater, a vapor compressor, and other equipment. The waste incineration system is coupled with the fly ash disposal system nearby to achieve in-situ disposal of fly ash, avoiding the logistics cost and secondary pollution problems of long-distance transportation of fly ash, and greatly reducing energy and water resource consumption.

A low nitrogen coupling combustion system for the disposal of waste stink gas and solid waste, including a waste pit, at least one stink gas incineration equipment and a waste incinerator, wherein the waste pit is equipped with stink gas outlets and the stink gas incineration equipment is provided with an incineration chamber for burning stink gas, as well as a stink gas inlet, a fuel inlet and a burned stink gas outlet which are connected with the incineration chamber; the stink gas inlet is connected with the stink gas outlet of the waste pit through a stink gas delivery pipe, and the fuel inlet is connected with a fuel source through a fuel delivery pipe; the burned stink gas outlet is connected with a combustion-supporting air inlet of the waste incinerator through a flue gas discharge pipe.