31 results about "Solid fuel fire" patented technology

A thermally efficiency regenerative air preheater 250 extracts more thermal energy from the flue gas exiting a solid fuel fired furnace 26 by employing an alkaline injection system 276. This mitigates acid fouling by selectively injecting different sized alkaline particles 275 into the air preheater 250. Small particles provide nucleation sites for condensation and neutralization of acid vapors. Large particles are injected to contact and selectively adhere to the heat exchange elements 542 and neutralize liquid acid that condenses there. When the deposit accumulation exceeds a threshold, the apparatus generates and utilizes a higher relative percentage of large particles. Similarly, a larger relative percentage of small particles are used in other cases. Mitigation of the fouling conditions permits the redesign of the air preheater 250 to achieve the transfer of more heat from the flue resulting in a lower flue gas outlet temperature without excessive fouling.

The invention provides a device for detecting solid fuel combustion products at different space positions on line. The combustion products at different axial and radial positions of solid fuel flame can be sampled by adjusting the position of the pointed end of a conical probe relative to the solid fuel flame; a two-dimensional movable platform is used, and richer and more accurate space distribution information of the solid fuel combustion products can be obtained more conveniently and flexibly, which is beneficial for learning combustion chemical reaction mechanism of the solid fuel and optimizing the combustion products; the axial and radial positions of the conical probe located on the solid fuel flame can be controlled more accurately through a driver and a controller, and sampling and detecting accuracy and convenience are further improved; multiple inorganic substances and multiple organic substances including light dydrocarbon and polycyclic aromatic hydrocarbon can be conveniently and fast detected in real time on line by using a six-way valve, an analytical instrument and other devices to obtain qualitative and quantitative analysis results.

The invention relates to a method for preparing zeolite FAU / mullite and LTA / mullite composite zeolite hollow microspheres by inducing in-situ hydrothermal crystallization with fly ash hollow microspheres as raw materials. Fly ash is the fine dust emitted by coal-fired power plants and other solid fuels, and the discharged solid waste contains a large number of glass bodies with hollow structures, called fly ash hollow microspheres. In the present invention, two different small particle zeolites, FAU or LTA, are used as crystal seeds, and are hydrothermally crystallized in an aluminum-containing or aluminum-free NaOH alkali solution, so that the active silicon-aluminum component in the fly ash hollow microspheres is crystallized into zeolite , while the inert mullite cannot be converted, and the original hollow structure is maintained, so that the composite hollow microspheres supported by the outer layer of dense zeolite membrane and the inner layer of mullite macropores are prepared.