In a method for reducing the NOx emissions of a rotary kiln of a clinker production plant, fuel supplied through a burner of the rotary kiln is burned along with primary air fed through the burner, wherein the primary air has a lower oxygen content and the primary air has an oxygen content reduced relative to that of the ambient air and a temperature increased relative to that of the ambient air, and the primary air is obtained by mixing ambient air with exhaust gas from the rotary kiln or from a heat exchanger connected to the rotary kiln and used for preheating raw meal. The primary air is further obtained by mixing with hot air, in particular waste air from a clinker cooler.

The present invention provides a deep fat fryer providing an oil vat for holding hot oil. The hot oil of the vat is heated by a heat exchanger system that includes a pair of heat tubes. Heat transfer along a length of the heat tubes is facilitated by a heat conductive baffle substantially filling the interior of the heat tubes in volume and length. Heated air and gas are forced through the dense and elongated baffle to facilitate heat transfer to the walls of the heat tubes.

A flame arrester/burner assembly with a multifarious arrester element for preventing deflagrations and extended endurance burning time (FABA-XT). The multifarious element flame arrester includes a pipe body having a first end and a second end, a first arrester element positioned within the pipe body adjacent the top end; a third arrester element adjacent the bottom end; and, a second arrester element positioned in the pipe body between the first arrester element and the second arrester element. The first, second, and/or third arrester elements may be of the same design or disparate designs. The FABA-XT of the present disclosure is an end-of-line burner element for use in VOC-Vapor Destruction Systems.

A combustion device with heat dissipating design includes a burner apparatus and a shield apparatus. The burner apparatus includes a fuel reservoir which has a top defining an opening. The shield apparatus defines a space and the burner apparatus is disposed within the space. The shield apparatus has a bottom and the opening is at a first height in a vertical direction from the bottom. The shield apparatus defines a first through hole extending therethrough and communicating the space and the outside of the shield apparatus and the first through hole is at a second height in the vertical direction from the bottom. The second height is less than the first height.

Embodiments disclosed herein are directed to devices and methods for improving operation of a combustion system. According to various embodiments disclosed herein, a prefabricated integrated combustion assembly is disclosed that may be installed into a combustion chamber of a combustion system. The combustion system may be a new combustion system that is being manufactured or a conventional combustion system that is being retrofitted.

Embodiments disclosed herein are directed to devices and methods for improving operation of a combustion system. According to various embodiments disclosed herein, a prefabricated integrated combustion assembly is disclosed that may be installed into a combustion chamber of a combustion system. The combustion system may be a new combustion system that is being manufactured or a conventional combustion system that is being retrofitted.

A vaporization pipe for a kerosene lamp has an oil tube, a thermally conductive tube, and a first passage. The oil tube is made of steel and has a vaporization jet on a top of the oil tube. The thermally conductive tube is mounted in the oil tube and forms a first channel. The first passage is disposed between the oil tube and the thermally conductive tube. The steel oil tube can prevent the vaporization pipe from being softened and bent during the preheating of vaporization pipe or burning of the kerosene, and thus a useful lifetime of the vaporization pipe is prolonged. The thermally conductive tube is made of high-thermal-conductivity material for keeping the vaporization pipe with adequate thermal conductivity and improving a burning rate of kerosene. The first passage allows the kerosene to flow upward, preventing the kerosene from being vaporized incompletely because the kerosene is over pressurized.

A pressurized cavity is provided around at least a portion or all of a regenerator, within which gas such as flue gas is maintained at a pressure in excess of the pressure within the regenerator, to protect against leakage of gas through the walls of the regenerator.

A heating control system that includes a heating unit with a constant burner and a pulsed burner. The constant burner is configured to remain active during operation. The pulsed burner is configured to toggle between an active mode and an inactive mode. The heating control system further includes a memory operable to store a temperature map that maps temperatures to percentages of a period that the pulsed burner is active and a microprocessor operably coupled to the heating unit and the memory. The microprocessor is configured to transmit a first electrical signal to activate the constant burner, obtain a temperature set point, determine the percentage of the period that the pulsed burner is active using the temperature set point and the temperature map, and transmit a second electrical signal to toggle the pulsed burner based on the determination of the percentage of the period that the pulsed burner is active.

A pressurized cavity is provided around at least a portion or all of a regenerator, within which gas such as flue gas is maintained at a pressure in excess of the pressure within the regenerator, to protect against leakage of gas through the walls of the regenerator.